Upgrade or replace your Subaru drivetrain with this complete JDM TY758V25AA 5-speed manual AWD transmission package for compatible 2008–2009 Subaru Legacy GT applications.

Instead of supplying only a transmission, this package includes the key matched AWD drivetrain components:

TY758V25AA 5-Speed Manual Transmission

R160 4.44 Rear Differential

Four OEM Axles – Two Front and Two Rear

Using a matched transmission and rear differential is especially important on a Subaru AWD vehicle because the front and rear drivetrain ratios must remain compatible.

The primary product relationship is:

Subaru Legacy GT → 2008–2009 → TY758V25AA → 5-Speed Manual → AWD → 4.44 Final Drive → R160 4.44 Rear Differential → Four Matching Axles

QUICK DETAILS

• Manufacturer: Subaru
• Vehicle: Legacy GT
• Years: 2008–2009
• Transmission Code: TY758V25AA
• Serial Number: 5MT932 TY758V25AA 703399
• Transmission Family: TY758
• Transmission Type: 5-Speed Manual
• Gears: 5
• Drivetrain: AWD
• Final Drive: 4.44
• Rear Differential: R160
• Rear Differential Ratio: 4.44
• Rear Differential LSD: Verify Physically
• Axles Included: 4
• Front Axles: 2
• Rear Axles: 2
• Condition: Used OEM JDM / Low Mileage
• Item ID: 253141
• Warranty: 30 Days
• Shipping: Nationwide Freight
• Installation: Available
• Local Pickup: Richmond / Henrico, Virginia

TY758V25AA TRANSMISSION CODE

The most important transmission identifier for this package is:

TY758V25AA

Subaru manufactured many TY75-series 5-speed manual transmissions with different:

• Final-drive ratios
• Internal ratios
• Differential configurations
• Clutch arrangements
• Sensors
• Axles
• Applications

Therefore, the broad TY758 family name alone is not enough to establish interchange.

Always verify the complete code:

TY758V25AA

SERIAL NUMBER

This individual transmission is identified as:

5MT932 TY758V25AA 703399

Keep this exact serial associated with:

• Product page
• Inventory record
• Invoice
• Warehouse tag
• Shipping documentation
• Image metadata
• Warranty record

This helps distinguish Item 253141 from J-Spec’s other TY758V25AA inventory.

5-SPEED MANUAL AWD TRANSMISSION

This is a:

5-Speed Manual / 5MT

transmission for an AWD drivetrain configuration.

Recommended product data:

Type: 5-Speed Manual

Gears: 5

Drivetrain: AWD

Do not describe this as an automatic, CVT, or 6-speed transmission.

4.44 FINAL DRIVE

This TY758V25AA package uses a:

4.44 Final Drive

That ratio is one of the most important specifications on the product page.

Therefore, include 4.44 prominently in:

• Product title
• Short description
• Product data
• Image ALT text
• Meta description
• FAQ
• Schema

MATCHING R160 4.44 REAR DIFFERENTIAL

This package includes a matching:

Subaru R160 4.44 Rear Differential

Pairing the correct rear differential with the transmission is critical on an AWD Subaru.

The transmission and rear differential must maintain the correct effective ratio relationship.

For this package:

Transmission Final Drive: 4.44

Rear Differential: R160 4.44

DO NOT CALL THE R160 AN LSD WITHOUT VERIFICATION

The live listing confirms:

R160

and:

4.44

However, the current product information does not specifically establish that Item 253141 has an LSD rear differential.

Therefore, use:

R160 4.44 Rear Differential

unless physical inspection confirms:

R160 4.44 LSD

If LSD is verified, add:

Differential Type: Limited-Slip Differential / LSD

to the product data.

FOUR OEM AXLES INCLUDED

This package includes:

Four OEM Axles

consisting of:

Two Front Axles

and:

Two Rear Axles

Including all four axles makes this substantially more useful than a transmission-only listing.

However, always verify spline counts, hub configuration, axle lengths, and exact target chassis before installation.

COMPLETE MATCHED AWD DRIVETRAIN PACKAGE

The package includes:

• TY758V25AA 5-speed manual transmission
• R160 4.44 rear differential
• Two front axles
• Two rear axles

Because these components were selected as a matched package, they reduce the risk of pairing the transmission with an incorrect rear differential ratio.

Nevertheless, additional installation components may still be required depending on the target vehicle.

IMPORTANT PHOTO WARNING – 4.11 vs. 4.44

The current live product page states that the photographs show a:

4.11 Rear Differential

However, the actual package is sold with a:

4.44 Rear Differential

Therefore:

The buyer receives a 4.44 differential, NOT the 4.11 differential currently shown in the photographs.

This should be corrected immediately by photographing the actual 4.44 differential supplied with Item 253141.

Until then, keep this notice clearly visible above the Add to Cart button.

WHY THE DIFFERENTIAL RATIO MATTERS

Subaru AWD drivetrains require compatible front and rear gear ratios.

Installing an incorrect rear differential can cause:

• Drivetrain binding
• Tire scrubbing
• Excessive heat
• Center differential stress
• Bearing damage
• Transmission damage
• Differential damage

Therefore, never substitute a 4.11 rear differential for the required 4.44 unit.

DO NOT USE THE 4.11 DIFFERENTIAL SHOWN IN THE CURRENT PHOTOS

The current 4.11 differential shown in the photographs should not be paired with this 4.44 transmission package.

For Item 253141:

Correct Rear Differential Ratio: 4.44

The image gallery should be updated so the photographed components match the actual components supplied.

2008–2009 SUBARU LEGACY GT APPLICATION

This listing primarily targets compatible:

2008 Subaru Legacy GT AWD

and:

2009 Subaru Legacy GT AWD

applications.

However, Subaru transmission interchange should never be determined solely from model year.

Always verify:

• Original transmission code
• Final-drive ratio
• Engine application
• Clutch configuration
• Driveshaft
• Axles
• Hubs
• Mounts
• Sensors
• Switches

DO NOT AUTOMATICALLY MARKET THIS AS EVERY WRX OR FORESTER APPLICATION

J-Spec has other TY758V25AA packages advertised for WRX and additional Subaru applications.

However, this specific product page should remain focused on:

2008–2009 Subaru Legacy GT

because that gives the page clearer search intent and reduces internal SEO competition.

Potential cross-model interchange should be treated as:

Verify Before Purchase

rather than universal direct fit.

CLUTCH CONFIGURATION MUST BE VERIFIED

Do not automatically publish:

Push Type

or:

Pull Type

unless Item 253141 is physically verified.

Subaru used different clutch configurations across related manual transmissions and years.

Before installation, compare:

• Bellhousing
• Clutch fork
• Release bearing arrangement
• Slave-cylinder location
• Pressure plate
• Flywheel
• Original transmission

Once verified, add the clutch type as a structured product attribute.

CLUTCH AND FLYWHEEL INSPECTION

While the transmission is removed, inspect:

• Clutch disc
• Pressure plate
• Flywheel
• Pilot bearing
• Release bearing
• Clutch fork
• Pivot
• Slave cylinder

Replacing worn clutch components while the gearbox is already removed can prevent duplicate labor later.

VERIFY THE DRIVESHAFT

Before installation, compare the transmission and differential with the original vehicle’s driveshaft configuration.

Check:

• Driveshaft length
• Output spline
• Rear differential flange
• Carrier bearing
• Universal joints
• Overall condition

Do not assume all Legacy GT drivetrain combinations use identical driveshafts.

VERIFY ALL FOUR AXLES

Although four axles are included, verify each one before installation.

Compare:

• Axle length
• Inner CV configuration
• Outer spline
• Hub spline
• ABS-related components
• Seal surfaces

Correct fitment requires more than simply having four Subaru axles.

VERIFY HUB COMPATIBILITY

Before installing the supplied axles, confirm compatibility with the vehicle’s:

• Front hubs
• Rear hubs
• Wheel bearings
• Spline counts

If the supplied axle spline differs from the target vehicle, additional hub components may be required.

TRANSMISSION MOUNT AND CROSSMEMBER

Inspect:

• Transmission mount
• Crossmember
• Mounting brackets
• Bushings
• Fasteners

Replace worn mounts or bushings before installation.

A damaged transmission mount can cause:

• Drivetrain movement
• Clunking
• Shifter movement
• Vibration

VERIFY SENSORS AND SWITCHES

Compare the replacement transmission with the original unit.

Pay particular attention to:

• Neutral switch
• Reverse-light switch
• Speed sensor where applicable
• Wiring connectors
• Harness routing

If necessary, compatible original switches or sensors may need to transfer.

MANUAL TRANSMISSION GEAR OIL

Use Subaru-approved manual transmission/front differential gear oil meeting the correct specification for the TY758 application.

A commonly used viscosity for Subaru manual transmissions is:

75W-90

However, verify the correct Subaru service specification before filling.

Use a synchronizer-compatible gear lubricant appropriate for the manual gearbox.

REAR DIFFERENTIAL GEAR OIL

The R160 rear differential uses a separate lubricant from the transmission.

Drain the donor differential oil before installation.

Then:

• Inspect the drain plug.
• Check for metal particles.
• Clean the magnet.
• Replace sealing washers when appropriate.
• Refill with the correct Subaru-approved differential gear oil.

Do not assume the oil inside a used imported differential is ready for service.

DRAIN THE TRANSMISSION OIL

Before installing the TY758V25AA:

• Drain the donor transmission oil.
• Inspect the fluid.
• Check for metallic contamination.
• Inspect the magnetic drain plug.
• Clean the plug.
• Refill with fresh correct-specification lubricant.

This provides a known maintenance baseline.

INSPECT ACCESSIBLE TRANSMISSION SEALS

While the transmission is outside the vehicle, inspect:

• Input seal area
• Front differential axle seals
• Output seal
• Shifter seal
• Drain plug
• Fill plug

Replace questionable accessible seals before installation.

INSPECT REAR DIFFERENTIAL SEALS

Likewise, inspect:

• Pinion seal
• Axle seals
• Cover or case sealing surfaces
• Drain plug
• Fill plug

Addressing leaks before installation can save considerable labor later.

COMPARE THE JDM AND ORIGINAL TRANSMISSIONS

Before installation, place both transmissions next to each other.

Compare:

• TY758 code
• Bellhousing
• Case
• Clutch configuration
• Axle openings
• Sensors
• Switches
• Transmission mount
• Shifter connection
• Output shaft
• Driveshaft flange

Do not discard the original transmission until the replacement has been installed and road-tested successfully.

INITIAL INSTALLATION CHECKLIST

Before installation:

• Confirm TY758V25AA transmission code.
• Confirm serial 5MT932 TY758V25AA 703399.
• Confirm 5-speed manual configuration.
• Confirm AWD.
• Confirm 4.44 transmission final drive.
• Confirm R160 rear differential.
• Confirm 4.44 rear differential ratio.
• Do not use the 4.11 differential shown in current photos.
• Verify whether the R160 is LSD or open.
• Verify clutch configuration.
• Inspect clutch.
• Inspect flywheel.
• Inspect pilot bearing.
• Inspect release bearing.
• Inspect transmission seals.
• Inspect differential seals.
• Verify front axles.
• Verify rear axles.
• Verify hub compatibility.
• Verify driveshaft.
• Inspect transmission mount.
• Verify sensors.
• Verify switches.
• Drain donor transmission oil.
• Drain donor differential oil.
• Refill both with correct lubricants.
• Check for leaks.

INITIAL ROAD TEST

Begin with a conservative road test.

Monitor:

• Clutch engagement
• 1st gear
• 1–2 shift
• 2–3 shift
• 3–4 shift
• 4–5 shift
• Downshifts
• Reverse
• Synchronizer operation
• Gear grinding
• Gear pop-out
• Transmission whine
• Bearing noise
• Driveshaft vibration
• Axle vibration
• Rear differential noise
• AWD binding
• Fluid leakage

If severe drivetrain binding occurs, stop driving immediately and verify the transmission and rear differential ratios.

COMMON SUBARU 5MT FAILURE SYMPTOMS

Possible transmission symptoms include:

• Gear grinding
• Difficult shifting
• Gear pop-out
• Bearing noise
• Transmission whine
• Synchronizer wear
• Oil leaks
• Excessive shifter movement
• Drivetrain clunking

However, similar symptoms can also come from:

• Clutch problems
• Release bearing
• Pilot bearing
• Transmission mounts
• Driveshaft
• Axles
• Rear differential

Therefore, diagnose the complete drivetrain before replacing the transmission.

WHY CHOOSE THIS TY758V25AA PACKAGE?

Item 253141 provides a matched JDM Subaru drivetrain package for compatible Legacy GT applications.

Key features include:

• Genuine Subaru OEM JDM components
• Exact TY758V25AA transmission code
• Individual serial number
• 5-speed manual
• AWD
• 4.44 final drive
• Matching R160 4.44 rear differential
• Four OEM axles
• Low-mileage Japanese import
• Individual Item ID
• Actual inventory photography
• 30-day limited warranty
• Nationwide freight shipping
• Affordable installation available

WHY BUY FROM J-SPEC AUTO SPORTS?

J-Spec Auto Sports specializes in Japanese engines, transmissions, and drivetrain components.

Customers benefit from:

• Actual inventory photographs
• Exact transmission-code identification
• Individual serial tracking
• Subaru drivetrain experience
• Nationwide freight shipping
• Local Richmond / Henrico pickup
• Installation availability
• Limited warranty coverage

INDIVIDUAL INVENTORY INFORMATION

Vehicle: Subaru Legacy GT

Years: 2008–2009

Transmission Code: TY758V25AA

Serial Number: 5MT932 TY758V25AA 703399

Transmission Family: TY758

Transmission: 5-Speed Manual

Drivetrain: AWD

Final Drive: 4.44

Rear Differential: R160

Rear Differential Ratio: 4.44

Rear Differential LSD: Verify Physically

Front Axles Included: 2

Rear Axles Included: 2

Total Axles Included: 4

Item ID: 253141

Condition: Used OEM JDM / Low Mileage

Warranty: 30 Days

30-DAY LIMITED WARRANTY

Item 253141 carries a 30-day limited warranty, subject to J-Spec Auto Sports’ current warranty terms and installation requirements.

For warranty documentation, retain records for:

• Correct transmission lubricant
• Correct rear differential lubricant
• 4.44 ratio verification
• Clutch inspection
• Flywheel inspection
• Seal inspection
• Axle verification
• Driveshaft verification
• Professional installation

FREQUENTLY ASKED QUESTIONS

What is the transmission code?

TY758V25AA

What is the serial number?

5MT932 TY758V25AA 703399

What vehicle does it target?

Compatible 2008–2009 Subaru Legacy GT AWD applications.

How many gears does it have?

Five forward gears.

Is this a manual transmission?

Yes.

It is a 5-speed manual / 5MT.

Is this AWD?

Yes.

What is the final drive?

4.44

What rear differential is included?

A matching:

R160 4.44 rear differential

Is the rear differential LSD?

The live listing does not clearly establish LSD for Item 253141.

Therefore, verify the actual differential before advertising it as limited slip.

Are axles included?

Yes.

The package includes:

Two front axles

and:

Two rear axles

for a total of:

Four axles

Why do the pictures show a 4.11 differential?

The current product photography shows a 4.11 differential.

However, Item 253141 is sold with a:

4.44 rear differential

The buyer receives the 4.44 differential supplied with this package, not the 4.11 differential currently shown.

Can I install the 4.11 differential shown in the pictures?

No.

This 4.44 drivetrain package requires the correct matching rear differential relationship.

Use the supplied 4.44 rear differential.

Is the clutch included?

Unless specifically shown and listed, do not assume the clutch assembly is included.

Is it push type or pull type?

Verify the physical Item 253141 transmission before publishing the clutch configuration.

What gear oil does it use?

Use Subaru-approved manual transmission/front differential lubricant meeting the correct specification for the TY758 application.

A commonly used viscosity is 75W-90, but verify the exact Subaru specification.

Does the rear differential use separate oil?

Yes.

The R160 rear differential is serviced separately.

Should I change both fluids?

Yes.

Drain and refill both the transmission and rear differential with fresh correct-specification lubricant before operation.

Should I keep my original transmission?

Yes.

Keep the original gearbox until installation and road testing are complete because sensors, switches, brackets, mounts, or other parts may need to transfer.

Is this rebuilt?

No.

Unless specifically stated otherwise, this is a used OEM JDM Subaru drivetrain package.

Does it have a warranty?

Yes.

Item 253141 carries a 30-day limited warranty.

ORDER ITEM 253141 – LEGACY GT TY758V25AA 4.44 AWD PACKAGE

Replace or upgrade your Legacy GT drivetrain with this low-mileage JDM TY758V25AA 5-speed manual AWD package.

Vehicle: Subaru Legacy GT

Years: 2008–2009

Transmission Code: TY758V25AA

Serial: 5MT932 TY758V25AA 703399

Transmission: 5-Speed Manual

Drivetrain: AWD

Final Drive: 4.44

Rear Differential: R160 4.44

Axles: Four Included

Item ID: 253141

Warranty: 30 Days

Before ordering, verify the original transmission code, final drive, clutch configuration, differential ratio, axle and hub configuration, driveshaft, sensors, switches, mounts, and complete physical drivetrain setup.