List of Subaru transmissions
Encyclopedia
Subaru
motor vehicles have used manual
, conventional automatic
, and continuously variable
(CVT) transmissions
. Subaru manufactures their own manual transmissions. Lately, all Subaru automatic transmissions have been Jatco
designs adapted to Subaru specifications.
.
design. It was available in FWD and Full-Time AWD form.
, but this transmission is still in use today with only minor changes. Also, this transmission is a four speed automatic with a lock-up torque converter
, not a 3 speed automatic with automatic overdrive
.
The Ford Motor Company
also uses a transmission on some Ford
, Kia Motors
, Mercury, and Mazda
products called the F-4EAT
, which shares some similarities with the Subaru
, since they are both manufactured by Jatco
. The Nissan Pathfinder
has also used this transmission in the past with an external transfer case attached.
1st 3.080
2nd 2.264
3rd 1.471
4th 1.000
5th 0.834
Rev 3.372
for the Subaru Justy
to gain reasonable acceleration and fuel economy from its small three cylinder engine
. It employs a push-belt system and comes with an optional 4WD unit that engages the rear wheels when a button on the shifter is depressed. It also has a 'sport mode' that when activated nearly doubles engine
RPM for better torque distribution when towing or going uphill. The Shift Indicator reads Park-Reverse-Neutral-Drive Normal-Drive Sport. Regrettably, the CVT transmission proved unreliable after accumulating high mileage, causing Subaru to stop exporting cars with CVTs to North America until the fifth generation Legacy/Outback. Subaru did continue to build Kei cars with CVTs, only for sale in Japan. In addition to improving the design of the transmission over the years, Subaru also supplies other companies with CVTs, as well.
received a newly-revised CVT under the Lineartronic name. It is a metal-belted, pulley-based CVT, which is considered the most reliable, due to the simplicity of the pulley system and durability of the metal belt. In addition, the metal belted pulley system is generally quieter than other CVT designs. The Lineartronic is available only with the 2.5i engine in both the Outback and Legacy. Subaru claims that the transmission provides "uninterrupted power that maximizes fuel efficiency while keeping the engine at the optimal rev range". EPA mileage estimates for the CVT with the 2.5i, naturally aspirated based engine, claim 30 MPG highway (29 Outback, 31 Legacy). Lineartronic has a conventional torque converter in place of a clutch . The transmission can also be manually controlled by the driver by providing the ability to select 6 different "virtual" gears, where the transmission will hold a particular ratio.
transmission. This transmission was dropped in 1994 when you could only get a 4WD unit.
until 1995. Also, in 1998 Subaru changed from a push-style clutch to a pull-style requiring minor bellhousing and fork changes.
MY 96 Transmission specs (and possibly other years)
Source: 1996 Subaru Legacy Service Manual
Subaru
; is the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries .Subaru is internationally known for their use of the boxer engine layout popularized in cars by the Volkswagen Beetle and Porsche 911, in most of their vehicles above 1500 cc as well as...
motor vehicles have used manual
Manual transmission
A manual transmission, also known as a manual gearbox or standard transmission is a type of transmission used in motor vehicle applications...
, conventional automatic
Automatic transmission
An automatic transmission is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually...
, and continuously variable
Continuously variable transmission
A continuously variable transmission is a transmission that can change steplessly through an infinite number of effective gear ratios between maximum and minimum values. This contrasts with other mechanical transmissions that offer a fixed number of gear ratios...
(CVT) transmissions
Transmission (mechanics)
A machine consists of a power source and a power transmission system, which provides controlled application of the power. Merriam-Webster defines transmission as: an assembly of parts including the speed-changing gears and the propeller shaft by which the power is transmitted from an engine to a...
. Subaru manufactures their own manual transmissions. Lately, all Subaru automatic transmissions have been Jatco
Jatco
JATCO is a subsidiary of Nissan which manufactures automatic transmissions for automobiles. Originally, Mazda was also a partner.-History:...
designs adapted to Subaru specifications.
Three Speed
All of Subaru's three speed automatic transmissions were made by JATCOJatco
JATCO is a subsidiary of Nissan which manufactures automatic transmissions for automobiles. Originally, Mazda was also a partner.-History:...
.
3AT 1st Revision
- Gear Ratios: 1st 2.600 2nd 1.505 3rd 1.000 Rev 2.166
- Usage: 1980-1982 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
3EAT
The 3EAT was an electronically controlled 3AT with available Single-Range 4WD.- Gear Ratios: 1st 2.821 2nd 1.559 3rd 1.000 Rev 2.257
- Usage: 1983-1994 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1985-1989 Subaru XTSubaru XTThe Subaru XT, XT6, Vortex, and Alcyone is a 2-door coupé that sold from 1985 to 1991. The name Alcyone was used in Japan, the Vortex name was used in Australia and New Zealand, and the name XT or XT6 , was sold in North America and Europe...
and Subaru BRATSubaru BRATThe Subaru BRAT was the coupe utility version of the Subaru Leone from the 1970s...
Four Speed
Subaru built their own four speed automatic transmission based on the old JatcoJatco
JATCO is a subsidiary of Nissan which manufactures automatic transmissions for automobiles. Originally, Mazda was also a partner.-History:...
design. It was available in FWD and Full-Time AWD form.
ACT-4 or VTD
Subaru uses two types of traction delivery systems, called Active Torque Split, or the performance oriented Variable Torque Distribution, called VTD. Active Torque Split has a front axle bias of 60:40, and sends torque to the rear wheels when front traction loss is detected. The first system is the more commonly used setup used on most Subaru products. VTD has more of a rear axle bias varying in deployment ratios of 45:55. VTD is usually found in performance models equipped with a turbocharger. Active Torque Split and VTD are utilized on transmissions with at least 4 gears, or the 4EAT and 5EAT.4EAT
This transmission was released in 1988 for use in the Subaru XT6 and Leone Touring Wagon. The bellhousing and input shaft were changed for the Subaru EJ engineSubaru EJ engine
The Subaru EJ engine is a series of automotive engines manufactured by Subaru and introduced in 1989, intended to succeed the previous Subaru EA engine. The EJ series is the mainstay of Subaru's engine line, with all engines of this series being 16-valve flat-4 horizontal, with configurations...
, but this transmission is still in use today with only minor changes. Also, this transmission is a four speed automatic with a lock-up torque converter
Torque converter
In modern usage, a torque converter is generally a type of hydrodynamic fluid coupling that is used to transfer rotating power from a prime mover, such as an internal combustion engine or electric motor, to a rotating driven load...
, not a 3 speed automatic with automatic overdrive
Overdrive (mechanics)
Overdrive is a term used to describe a mechanism that allows an automobile to cruise at sustained speed with reduced engine RPM, leading to better fuel economy, lower noise and lower wear...
.
- Gear Ratios: 1st 2.785 2nd 1.545 3rd 1.000 4th 0.697 Rev 2.272
- Usage: 1988-1991 Subaru XTSubaru XTThe Subaru XT, XT6, Vortex, and Alcyone is a 2-door coupé that sold from 1985 to 1991. The name Alcyone was used in Japan, the Vortex name was used in Australia and New Zealand, and the name XT or XT6 , was sold in North America and Europe...
, 1990-2004 Subaru LegacySubaru LegacyThe Subaru Legacy is a mid-size car built by the Japanese company Fuji Heavy Industries, and manufactured by its division Subaru since 1989, and is available as a sedan or wagon. Part of the original design goals for the Legacy model was to provide Subaru a vehicle in which they could compete in...
, 1992-1997 Subaru Alcyone SVXSubaru Alcyone SVXThe Subaru Alcyone SVX, also known outside of its home market Japan as the Subaru SVX, is a two-door grand tourer coupé that was sold by Subaru, the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries . Produced from 1991 to 1997, it was FHI's first...
, and all Subarus 1995–Present
The Ford Motor Company
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...
also uses a transmission on some Ford
Ford Motor Company
Ford Motor Company is an American multinational automaker based in Dearborn, Michigan, a suburb of Detroit. The automaker was founded by Henry Ford and incorporated on June 16, 1903. In addition to the Ford and Lincoln brands, Ford also owns a small stake in Mazda in Japan and Aston Martin in the UK...
, Kia Motors
Kia Motors
Kia Motors , headquartered in Seoul, is South Korea's second-largest automobile manufacturer, following the Hyundai Motor Company, with sales of over 1.4 million vehicles in 2010...
, Mercury, and Mazda
Mazda
is a Japanese automotive manufacturer based in Fuchū, Aki District, Hiroshima Prefecture, Japan.In 2007, Mazda produced almost 1.3 million vehicles for global sales...
products called the F-4EAT
Ford F-4EAT transmission
The F-4EAT was a 4-speed, electronically controlled automatic transmission developed by Mazda and JATCO starting in 1990. It was also later produced by Ford Motor Company from 1991 to 2003. It is referred to as the F4A-EL by Mazda and Kia...
, which shares some similarities with the Subaru
Subaru
; is the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries .Subaru is internationally known for their use of the boxer engine layout popularized in cars by the Volkswagen Beetle and Porsche 911, in most of their vehicles above 1500 cc as well as...
, since they are both manufactured by Jatco
Jatco
JATCO is a subsidiary of Nissan which manufactures automatic transmissions for automobiles. Originally, Mazda was also a partner.-History:...
. The Nissan Pathfinder
Nissan Pathfinder
The Nissan Pathfinder is a SUV manufactured by Nissan Motors since 1986, derived from Nissan's compact pickup truck platform. The Pathfinder is slotted in size between the Murano and Armada or Patrol, but in price between the Xterra and Murano...
has also used this transmission in the past with an external transfer case attached.
Five Speed
Subaru released the 5EAT w/ SportShift in 2003 based on the Jatco JR507E transmission.5EAT
- Gear Ratios:
1st 3.080
2nd 2.264
3rd 1.471
4th 1.000
5th 0.834
Rev 3.372
- Usage: 2005+ Subaru LegacySubaru LegacyThe Subaru Legacy is a mid-size car built by the Japanese company Fuji Heavy Industries, and manufactured by its division Subaru since 1989, and is available as a sedan or wagon. Part of the original design goals for the Legacy model was to provide Subaru a vehicle in which they could compete in...
GT, Subaru OutbackSubaru OutbackThe Subaru Outback is a station wagon manufactured by Fuji Heavy Industries since 1995. Its original concept originated with Subaru of America, which was suffering from slumping sales in the mid-1990s partly due to a lack of an entry in the then-burgeoning sport utility vehicle market...
, Subaru TribecaSubaru TribecaThe Subaru Tribeca is a mid-size crossover SUV sold since 2005 by Subaru, the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries . Released in some markets as the Subaru B9 Tribeca, the name "Tribeca" derives from the TriBeCa neighborhood of New York City...
Six Speed
Subaru made a one off paddle-shift AWD transmission for their B11S Concept car built off of the 5EAT platform.6EATT
- Gear Ratios: 1st 3.636 2nd 2.264 3rd 1.471 4th 1.000 5th 0.834 6th 0.700 Rev 3.272
- Usage: B11S Concept Car Only
1989-1994 Subaru Justy
Subaru developed a CVTContinuously variable transmission
A continuously variable transmission is a transmission that can change steplessly through an infinite number of effective gear ratios between maximum and minimum values. This contrasts with other mechanical transmissions that offer a fixed number of gear ratios...
for the Subaru Justy
Subaru Justy
The Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
to gain reasonable acceleration and fuel economy from its small three cylinder engine
Engine
An engine or motor is a machine designed to convert energy into useful mechanical motion. Heat engines, including internal combustion engines and external combustion engines burn a fuel to create heat which is then used to create motion...
. It employs a push-belt system and comes with an optional 4WD unit that engages the rear wheels when a button on the shifter is depressed. It also has a 'sport mode' that when activated nearly doubles engine
Engine
An engine or motor is a machine designed to convert energy into useful mechanical motion. Heat engines, including internal combustion engines and external combustion engines burn a fuel to create heat which is then used to create motion...
RPM for better torque distribution when towing or going uphill. The Shift Indicator reads Park-Reverse-Neutral-Drive Normal-Drive Sport. Regrettably, the CVT transmission proved unreliable after accumulating high mileage, causing Subaru to stop exporting cars with CVTs to North America until the fifth generation Legacy/Outback. Subaru did continue to build Kei cars with CVTs, only for sale in Japan. In addition to improving the design of the transmission over the years, Subaru also supplies other companies with CVTs, as well.
- Gear Ratios: Infinite
- Usage: 1989-1994 Subaru JustySubaru JustyThe Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
Subaru Lineartronic CVT
The fifth generation Legacy/Outback and the JDM Subaru ExigaSubaru Exiga
The Subaru Exiga is a new medium MPV that debuted as a concept car during the 2007 Tokyo Motor Show. According to the Japanese Subaru press introduction materials, the name "Exiga" is a neologism combination of the words "exciting" and "active"....
received a newly-revised CVT under the Lineartronic name. It is a metal-belted, pulley-based CVT, which is considered the most reliable, due to the simplicity of the pulley system and durability of the metal belt. In addition, the metal belted pulley system is generally quieter than other CVT designs. The Lineartronic is available only with the 2.5i engine in both the Outback and Legacy. Subaru claims that the transmission provides "uninterrupted power that maximizes fuel efficiency while keeping the engine at the optimal rev range". EPA mileage estimates for the CVT with the 2.5i, naturally aspirated based engine, claim 30 MPG highway (29 Outback, 31 Legacy). Lineartronic has a conventional torque converter in place of a clutch . The transmission can also be manually controlled by the driver by providing the ability to select 6 different "virtual" gears, where the transmission will hold a particular ratio.
- Gear Ratios: Infinite
- Usage: 2010-current Subaru LegacySubaru LegacyThe Subaru Legacy is a mid-size car built by the Japanese company Fuji Heavy Industries, and manufactured by its division Subaru since 1989, and is available as a sedan or wagon. Part of the original design goals for the Legacy model was to provide Subaru a vehicle in which they could compete in...
/ OutbackSubaru OutbackThe Subaru Outback is a station wagon manufactured by Fuji Heavy Industries since 1995. Its original concept originated with Subaru of America, which was suffering from slumping sales in the mid-1990s partly due to a lack of an entry in the then-burgeoning sport utility vehicle market...
& ExigaSubaru ExigaThe Subaru Exiga is a new medium MPV that debuted as a concept car during the 2007 Tokyo Motor Show. According to the Japanese Subaru press introduction materials, the name "Exiga" is a neologism combination of the words "exciting" and "active"....
T71
- Gear Ratios: 1st 3.307 2nd 1.944 3rd 1.344 4th 0.942 Rev 4.100
- Usage: All 1970-1982 FWD
T71A 1st Revision
- Gear Ratios: 1st 3.636 2nd 1.950 3rd 1.193 4th 0.769 Rev 3.583
- Usage: All 1983-1989 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
FWD 1600cc
T71W 4WD
- Gear Ratios: 1st 4.090 2nd 2.157 3rd 1.379 4th .971 Rev 4.100, Low Range 1.462
- Usage: 1975-1980 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
and 1978-1981 Subaru BratSubaru BRATThe Subaru BRAT was the coupe utility version of the Subaru Leone from the 1970s...
T71W 4WD 1st Revision
- Gear Ratios: 1st 3.666 2nd 2.157 3rd 1.266 4th .885 Rev 4.100, Low Range 1.462
- Usage: 1981 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1600cc
T81W 4WD
- Gear Ratios: 1st 3.636 2nd 1.950 3rd 1.266 4th .885 Rev 3.583, Low Range 1.462
- Usage: 1981 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1800cc
T81W 4WD 1st Revision
- Gear Ratios: 1st 3.636 2nd 1.950 3rd 1.193 4th .769 Rev 3.583, Low Range 1.462
- Usage: 1982-1989 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1800cc and 1982-1993 Subaru BratSubaru BRATThe Subaru BRAT was the coupe utility version of the Subaru Leone from the 1970s...
(EA-81 engine only)
T71G
- Gear Ratios: 1st 3.666 2nd 2.157 3rd 1.266 4th .885 5th .725, Rev 4.100
- Usage: 1975-1982 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
T71G
- Gear Ratios: 1st 3.636 2nd 2.157 3rd 1.266 4th .885 5th .725, Rev 3.583
- Usage: 1983-1989 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1600cc
T81G
- Gear Ratios: 1st 3.371 2nd 1.950 3rd 1.266 4th .885 5th .725, Rev 3.583
- Usage: 1983-1989 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
1800cc (EA-81 Engine ONLY)!
5MT EA
1st 3.636 2nd 1.950 3rd 1.344 4th .971 5th .783, Rev 3.583- Usage: 1985-1994 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
5MT
This was the only five-speed 4WD transmission made for the Subaru LeoneSubaru Leone
The Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
- Gear Ratios: 1st 3.545 2nd 1.947 3rd 1.366 4th .972 5th .780, Rev 3.416 Low Range 1.59
- Usage: 1985-1994 Subaru LeoneSubaru LeoneThe Subaru Leone was a compact car produced by the Japanese car manufacturer Fuji Heavy Industries from 1971 to 1994. The word "leone" is Italian for lion....
and 1985-1989 Subaru XTSubaru XTThe Subaru XT, XT6, Vortex, and Alcyone is a 2-door coupé that sold from 1985 to 1991. The name Alcyone was used in Japan, the Vortex name was used in Australia and New Zealand, and the name XT or XT6 , was sold in North America and Europe...
1800cc
5MT Full-Time
This transmission was Subaru's first Full-Time 4WD transmission, only used in the Alcyone/XT6.- Gear Ratios: 1st 3.545 2nd 2.111 3rd 1.448 4th 1.088 5th .871, Rev 3.416 Low Range 1.196
- Usage: 1988-1991 Subaru XT-6Subaru XTThe Subaru XT, XT6, Vortex, and Alcyone is a 2-door coupé that sold from 1985 to 1991. The name Alcyone was used in Japan, the Vortex name was used in Australia and New Zealand, and the name XT or XT6 , was sold in North America and Europe...
5MT Justy
The Justy used a transaxle, rather than a conventional SubaruSubaru
; is the automobile manufacturing division of Japanese transportation conglomerate Fuji Heavy Industries .Subaru is internationally known for their use of the boxer engine layout popularized in cars by the Volkswagen Beetle and Porsche 911, in most of their vehicles above 1500 cc as well as...
transmission. This transmission was dropped in 1994 when you could only get a 4WD unit.
- Gear Ratios: 1st 3.071 2nd 1.695 3rd 1.137 4th .823 5th .675, Rev 3.461 Final 4.437
- Usage: 1984-1993 Subaru JustySubaru JustyThe Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
5MT Justy 4WD
The Justy's transaxle was modified to fit push-button 4WD in 1988. The gear ratios were also altered slightly.- Gear Ratios: 1st 3.071 2nd 1.695 3rd 1.137 4th .771 5th .631, Rev 3.461 Final 5.200
- Usage: 1988-1994 Subaru JustySubaru JustyThe Subaru Justy is a subcompact hatchback that has been sold by Japanese automobile manufacturer Subaru since 1984. From 1984–1994 Subaru manufactured the Justy itself; since then it has sold a rebadged version of other vehicles under the Justy nameplate...
5MT
It is notable to mention that only Turbo vehicles received a hydraulic clutchClutch
A clutch is a mechanical device which provides for the transmission of power from one component to another...
until 1995. Also, in 1998 Subaru changed from a push-style clutch to a pull-style requiring minor bellhousing and fork changes.
- Gear Ratios: 1st 3.785 2nd 1.945 3rd 1.500 4th 0.994 5th 0.780/(0.735 WRX) - Final 4.11 (3.90 WRX)
- Usage: All 1990-2003 with EJ-EngineSubaru EJ engineThe Subaru EJ engine is a series of automotive engines manufactured by Subaru and introduced in 1989, intended to succeed the previous Subaru EA engine. The EJ series is the mainstay of Subaru's engine line, with all engines of this series being 16-valve flat-4 horizontal, with configurations...
MY 96 Transmission specs (and possibly other years)
- Gear Ratios: 1st 3.545 2nd 2.111 3rd 1.448 4th 1.088 5th 0.825 (FWD) / 0.780 (AWD) / 0.871 (Outback AWD) --- Final 3.454 (FWD) / 3.900 (AWD) / 4.111 (Outback AWD)
Source: 1996 Subaru Legacy Service Manual
5MT Revised
- Gear Ratios: 1st 3.454 2nd 2.062 3rd 1.448 4th 1.088 5th 0.871 Rev 3.545
- Usage: All 2003–Present Subaru Non-Turbo
5MT Turbo
- Gear Ratios: 1st 3.166 2nd 1.882 3rd 1.296 4th 0.972 5th 0.738 Rev 3.545
- Usage: All 2003–Present Subaru Turbo
Impreza WRX STi and Legacy spec. B
There are three six speed manual transmissions currently available for USDM Subarus. The STi and Legacy Spec B are the two vehicles that received them. The STi's 6MT has undergone various changes throughout the years, but have always had a limited slip front differential and the DCCD. In 2006, The STi's 6MT underwent some changes that included making the center differential a limited slip unit and a slight lengthening of some gears. The Spec. B's 6MT has different gear ratios (specifically 6th gear being longer) than the STi's unit, does not have DCCD, and neither the front nor center differentials are limited slip units. The Spec B's 6MT is still highly prized; however, because of its longer ratios than those found in the STi, while still retaining much of the STi unit's robustness.- Gear Ratios : 1st 3.636 2nd 2.375 3rd 1.761 4th 1.346 5th 0.971 6th 0.756 Rev 3.545 (This only applies to either the 04-05 STi or the 06+ STi, not both, and not the Spec B.).
- Usage: 2004+ Subaru WRX STi and 2007+ Subaru LegacySubaru LegacyThe Subaru Legacy is a mid-size car built by the Japanese company Fuji Heavy Industries, and manufactured by its division Subaru since 1989, and is available as a sedan or wagon. Part of the original design goals for the Legacy model was to provide Subaru a vehicle in which they could compete in...
spec. B - Early 2004 WRX STi models came with axle stubs inserted in the transmission with female front axles. Late 2004 WRX STi models came without the stubs and instead had male front axles.
- The 2004 and 2005 model WRX STi 6MT was a final drive of 3.90. In 2006 and 2007 the 6MT came with a final drive of 3.545 which made the 2006 and 2007 much sought after for the non-STi WRX owners as a transmission swap. This is due to the R160 rear differential 3.545 final drive of most of the non-STi WRXs.
- US Impreza WRX STi MY04 TY856WH3MA Ratios:3.636,2.375,1.761,1.346,0.971,0.756 Final Drive:3.900 DCCD:35/65 Center Diff:A.P. Suretrac Front Diff:automatic DCCD system
- US Impreza WRX STi MY04 late TY856WH4MA Ratios:3.636,2.375,1.761,1.346,0.971,0.756 Final Drive:3.900 DCCD:35/65 Center Diff:A.P. Suretrac Front Diff:automatic DCCD system
- US Impreza WRX STi MY05 TY856WW6MA Ratios:3.636,2.375,1.761,1.346,0.971,0.756 Final Drive:3.900 DCCD:35/65 Center Diff:Helical LSD Front Diff:automatic DCCD system
2010 Legacy/Outback
The new 2010 Legacy and Outback models will offer a six-speed manual as one of the two transmission options in the base 2.5i, and is the only option for the Legacy GT model. This transmission is an evolution of the 5MT split-case design, and does not share any parts of construction with the STI's 6MT transmission. The transmission uses a cable shifter, unlike all previous designs that use a direct mechanical linkage.Sources
- Subaru of America main website
- 1977 Subaru Factory Service Manual
- 1983 Subaru Factory Service Manual
- 1984 Subaru Factory Service Manual
- 1979-2002 Subaru Owner's Manuals