2015 Subaru Impreza WRX 6-Speed Manual Transmission

2015 Subaru WRX 6-Speed Manual Transmission for Sale | Low Mileage OEM Gearbox | McClain Auto Part

Product Overview

If you are searching for a 2015 Subaru WRX manual transmission for sale, McClain Auto Part carries genuine OEM 6-speed WRX gearboxes sourced from verified low-mileage donor vehicles and inspected at our Cleveland, Ohio warehouse before anything ships. We have been supplying used drivetrains to mechanics, builders, and enthusiasts across all 50 states since 2009. Every WRX 6-speed transmission we sell is gear-tested, synchro-assessed, fluid-inspected, and backed by a 6-month warranty. Buyers choose a verified OEM WRX manual transmission over rebuilt alternatives because they get the factory gearbox matched to the FA20DIT engine and Subaru Symmetrical AWD system with documented mileage and known condition at a price that makes sense for both replacement and performance build applications.

Product Highlights

Genuine OEM Subaru WRX 6-speed manual transmission
Low mileage under 80,000 miles verified from donor vehicle records
All six forward gears and reverse engaged and tested before shipping
Synchro condition assessed with specific attention to second and third gear
No grinding, no pop-outs, and no unusual resistance confirmed on every unit
Transmission fluid inspected for metal contamination and condition
Input and output shafts checked for play and bearing noise
Mileage verified against donor vehicle records before listing
6-month warranty against internal mechanical defects
Nationwide freight shipping within 1 to 3 business days
Real inventory in our Cleveland warehouse, not a brokered listing
VIN and transmission code verification available before ordering

The 2015 WRX 6-Speed Manual Transmission

The 2015 Subaru WRX 6 speed manual transmission, transmission code TR690, is a purpose-built performance gearbox designed specifically for the FA20DIT turbocharged engine and Subaru Symmetrical AWD drivetrain. It is not a generic manual gearbox adapted from another platform. The gear ratios, final drive ratio, center differential integration, and hydraulic clutch actuation are all calibrated around the WRX’s AWD torque delivery and the power characteristics of its turbocharged four-cylinder engine.

The 2015 model year introduced the FA20DIT engine to the WRX lineup, replacing the EJ series engine that powered previous WRX generations. This engine change brought a revised transmission calibration that differs from earlier WRX and STI platform gearboxes in ways that affect direct compatibility. A transmission from a pre-2015 WRX or from an STI does not swap cleanly into a 2015 WRX application without verification. Compatibility matters on this platform and we confirm it against your VIN before anything ships.

WRX owners who have driven the manual do not want to replace it with anything else when it fails. The direct mechanical engagement, performance-oriented gear spacing, and tactile shift feel of the WRX 6MT are characteristics that automatic and CVT alternatives cannot replicate. An OEM used WRX manual transmission with verified low mileage, a clean synchro assessment, and a documented inspection is the most direct path back to factory-specification performance.

Technical Specifications

Specifications reflect the standard 2015 WRX TR690 configuration. Contact us with your VIN and transmission code before ordering to confirm an exact match for your specific vehicle.

Why WRX Transmissions Need Replacing

This is one of the most consistent questions we receive from WRX buyers and it is worth addressing directly. The WRX 6MT is a capable performance gearbox but it is not indestructible under hard use. Understanding the most common failure modes helps buyers confirm whether replacement is the right call for their specific situation.

Synchro Wear

Synchro wear is the most common reason WRX owners need a replacement gearbox. The 2015 WRX transmission was designed for performance driving but synchros wear faster under repeated aggressive shifting, high-RPM gear entries, and sustained track use. Third gear is typically the first to show wear, followed by second. Grinding on downshifts or resistance when engaging a specific gear are the most common early symptoms.

Gear Grinding

Gear grinding on downshifts typically points to synchro wear, driver technique issues that accelerated wear, or a combination of both. Continued driving after grinding begins causes additional internal damage that can extend to the gear set itself. Replacement before secondary damage occurs is consistently the more cost-effective outcome.

Clutch-Related Transmission Damage

Clutch failures that go unaddressed sometimes transmit damage to the transmission input shaft or shift forks. Buyers who delayed clutch replacement past the point of failure occasionally find the transmission absorbed damage that makes replacement necessary alongside the clutch job.

High Mileage Wear

A WRX with 120,000 or more hard miles on the original gearbox is simply due for a fresh unit. Worn bearings, degraded synchros, and accumulated gear set wear all present at high mileage on a performance-driven gearbox. A verified low mileage OEM replacement addresses all of these simultaneously.

Vehicle Compatibility

Primary Application

2015 Subaru WRX with FA20DIT turbocharged engine and manual transmission trim

Adjacent Year Compatibility

The 2015 WRX transmission may be compatible with certain 2014 and 2016 WRX models depending on the specific transmission code and final drive ratio of your vehicle. This is not a guaranteed cross-year swap without verification. The WRX drivetrain is a precision AWD system where a mismatch in final drive ratio between the transmission and rear differential produces drivability issues that are difficult to diagnose after installation.

Provide your VIN, current transmission code, and final drive ratio when you contact us before ordering. Five minutes of verification before the order processes prevents a significant amount of avoidable complication.

STI Compatibility

The WRX and STI use different transmissions despite sharing the WRX nameplate. The STI uses a different gearbox with different gear ratios, a different final drive configuration, and different AWD integration. A WRX transmission does not directly replace an STI unit and vice versa. Confirm your specific trim before ordering.

Inspection Process

Every 2015 WRX manual transmission that ships from our Cleveland warehouse goes through a documented hands-on inspection. The synchro wear patterns specific to the WRX 6MT require particular attention during inspection, especially on units from higher-mileage donor vehicles.

Visual Case Inspection

The full external surface of the transmission case is inspected for cracks, impact damage, and fluid seepage at all gasket and seal surfaces. The bellhousing face, output flange area, and drain and fill plug threads are specifically checked for damage that would affect installation or driveline connection.

Gear Engagement Testing

All six forward gears and reverse are engaged and tested for clean entry, clean exit, and absence of grinding or unusual resistance. Each gear is confirmed to hold without popping out under simulated load before the unit is packaged.

Synchro Assessment

Synchro condition is assessed through gear engagement feel, resistance testing on each gear, and transmission fluid condition. Specific attention is paid to second and third gear synchros, which are the highest-wear components on the WRX 6MT under performance driving conditions. Any evidence of synchro damage or abnormal engagement resistance disqualifies a unit from our inventory.

Fluid Inspection

Transmission fluid is drained and inspected for metal particulate and contamination. Visible metal flakes or chunks in the fluid are a direct indicator of internal gear or bearing damage and disqualify a unit from shipping.

Shaft and Bearing Inspection

The input shaft and output shaft are checked for play, bearing noise, and spline condition. Bearing wear on the input shaft is a secondary failure point on higher-mileage WRX gearboxes and is specifically assessed before listing.

External Component Inspection

External sensors, switch ports, and mounting surfaces are inspected for damage that would affect installation. The reverse light switch and vehicle speed sensor port positions are confirmed intact.

Shipping Preparation

After passing inspection, the transmission is drained, all ports are plugged to prevent contamination during freight transit, and the unit is secured on a freight pallet. It is wrapped and strapped before handoff to the carrier.

What Is Included

Standard With Most Units

Complete 2015 WRX 6-speed manual transmission assembly
External sensors as equipped on the donor vehicle
Transmission mounting hardware, condition documented

Available on Select Units or Upon Request

Shifter assembly, confirm availability at time of order
Driveshaft, confirm availability and dimensions at time of order

Not Included Unless Specifically Confirmed

Clutch assembly and flywheel
Installation hardware beyond what is attached to the unit
Bellhousing if removed from the donor vehicle

Contact us before ordering to confirm exactly what is included with the specific unit in current inventory.

Installation Notes

Final Drive Ratio Confirmation

Confirm the final drive ratio on the replacement transmission matches your vehicle’s rear differential before installation. A final drive mismatch in the WRX Symmetrical AWD system causes binding, premature differential wear, and drivability issues that are difficult to diagnose after the fact. This is the single most important compatibility check on the WRX platform beyond basic year and trim confirmation.

Clutch System

Inspect the clutch master cylinder, slave cylinder, and hydraulic line condition before installing a replacement transmission. A failing clutch hydraulic system produces symptoms that can be misdiagnosed as transmission synchro problems. Addressing clutch hydraulic wear before installation prevents a second transmission pull shortly after the replacement job.

Transmission Fluid

Fill the TR690 with a quality GL-4 compatible gear oil or Subaru-specified manual transmission fluid. Confirm the fluid specification for your specific application before filling. Incorrect fluid specification accelerates synchro wear and is one of the most common causes of premature failure on replacement gearboxes.

Break-In Procedure

Replacement manual transmissions benefit from a break-in period of several hundred miles at moderate loads before sustained hard use. Shift through all six gears during break-in and avoid high-RPM downshifts until the synchros have had adequate time to seat. Change the transmission fluid after the first 500 miles on a fresh installation to remove initial wear particles produced during synchro seating.

AWD System Inspection

With the transmission out of the vehicle, inspect the center differential, front differential, and driveshaft components for wear that may have contributed to the original transmission failure. Replacing the gearbox while leaving worn AWD components in place can accelerate wear on the replacement unit.

Shipping Information

WRX manual transmissions ship nationwide from our Cleveland, Ohio warehouse via freight carrier. Every unit is mounted on a secured freight pallet, all ports plugged, wrapped and strapped before handoff to the carrier.

Most orders are processed and ready for freight pickup within 1 to 3 business days of purchase confirmation and payment. You receive a tracking number as soon as the unit leaves our facility. Freight delivery times vary by destination but most continental US locations receive delivery within 3 to 7 business days after pickup.

Local pickup is available for buyers in the Cleveland, Ohio area by prior arrangement. Contact us before visiting to confirm the specific unit is ready and staged.

Contact us at +1(216) 230-5433 or sales@mcclainautopart.com before ordering to confirm current availability, exact mileage, fluid condition, and transmission code on the unit in current inventory.

Warranty

Every 2015 WRX manual transmission from McClain Auto Part ships with a 6-month warranty against internal mechanical defects. The warranty covers internal mechanical failures resulting from defects present in the transmission at the time of sale.

The warranty does not cover damage from incorrect fluid specification, improper installation, clutch hydraulic system failures misdiagnosed as transmission issues, or abuse. Synchro condition and fluid condition are documented and disclosed before the sale is processed so both parties understand exactly what is being sold.

If a covered mechanical issue arises within the warranty period, contact our team directly. We review the situation and work toward a fair resolution including a replacement unit, credit, or repair guidance depending on the specific circumstances.

James McClain has honored warranty claims since 2009 without unnecessary complications.

Why Buy From McClain Auto Part

James McClain founded this business in Cleveland, Ohio in 2009 with one standard that has not changed: sell a part you would put in your own vehicle. That standard applies to every WRX transmission we list.

Every unit we carry is physically in our Cleveland warehouse before it is listed. We do not broker transmissions from other suppliers or list inventory we have not personally inspected. When you call us about a 2015 WRX manual transmission you talk to someone who understands the specific synchro wear patterns on WRX gearboxes, knows the final drive ratio verification step that prevents AWD compatibility issues, and can give you accurate information about the exact unit in current inventory before you commit to the purchase.

We carry a 4.9 out of 5 star rating on Google from over 800 verified customer reviews. Our customers include WRX owners doing direct replacements, performance shop owners handling drivetrain rebuilds, and enthusiasts sourcing clean gearbox cores for modified builds. The consistency of our inspection process and our warranty follow-through are the reasons they keep coming back.

Frequently Asked Questions

Does This Transmission Fit All 2015 WRX Models

The 2015 WRX with the FA20DIT engine and manual transmission trim is the primary application. Not all WRX trims came with a manual gearbox. Provide your VIN and transmission code before ordering and we confirm fitment for your exact vehicle.

Is the Transmission Tested Before It Ships

Yes. Every unit goes through gear engagement testing on all six forward gears and reverse, synchro condition assessment, visual case inspection, shaft and bearing check, and fluid condition inspection at our Cleveland facility before packaging.

What Is the Transmission Code for the 2015 WRX

The 2015 WRX 6-speed manual transmission carries the TR690 transmission code. Confirm your transmission code from your vehicle’s documentation or VIN before ordering to ensure a direct match.

How Many Miles Are on This Transmission

Under 80,000 miles verified from donor vehicle records. Most current WRX transmission inventory comes in lower than that threshold. We give you the exact mileage on the specific unit before you commit to the order.

Does It Include the Clutch or Shifter

Not automatically. Clutch assembly, flywheel, and shifter availability varies by unit. Contact us with your specific application and we confirm what is available with the current unit in inventory.

Why Does the Final Drive Ratio Matter on the WRX

The Subaru Symmetrical AWD system requires a matched final drive ratio between the transmission and rear differential to function correctly. A mismatch causes binding, premature differential wear, and drivability issues. Confirm the final drive ratio on the replacement transmission matches your vehicle’s rear differential before ordering.

Will This Transmission Fit a 2014 or 2016 WRX

Possibly, depending on the specific transmission code and final drive ratio of your vehicle. This is not a guaranteed cross-year swap without verification. Provide your VIN, transmission code, and final drive ratio and we confirm compatibility before ordering.

Will This Fit a WRX STI

No. The WRX and STI use different transmissions with different gear ratios, final drive configurations, and AWD integration. A WRX transmission does not directly replace an STI unit.

What Fluid Does the TR690 Use

A quality GL-4 compatible gear oil or Subaru-specified manual transmission fluid. Do not use GL-5 gear oil. Confirm the specific fluid specification for your application before filling.

What Does the Warranty Cover

Six months from purchase against internal mechanical defects. Synchro condition and fluid condition are documented and disclosed before the sale. Contact us if a covered issue arises within the warranty period and we work toward a fair resolution.

How Is the Transmission Shipped

Every unit ships on a secured freight pallet from our Cleveland warehouse. Most orders are processed within 1 to 3 business days. You receive a tracking number when the unit ships. Freight delivery to most continental US locations takes 3 to 7 business days after pickup.

Do You Ship Nationwide

Yes. We ship WRX manual transmissions to all 50 states via freight carrier from Cleveland, Ohio.

Can I Pick Up the Transmission Locally

Yes. Local pickup is available for buyers in the Cleveland, Ohio area by prior arrangement. Contact us before visiting to confirm the unit is ready and staged.

How Do I Place an Order

Call us at +1(216) 230-5433 or email sales@mcclainautopart.com. Provide your VIN, transmission code, and final drive ratio before ordering. We confirm availability, exact mileage, fluid condition, included components, and fitment before processing your order.

Conclusion

A genuine OEM 2015 Subaru WRX 6-speed manual transmission from McClain Auto Part means a gear-tested, synchro-assessed, and warranted TR690 gearbox from a verified low-mileage donor vehicle shipped directly from our Cleveland warehouse. The most important step before ordering is final drive ratio confirmation and transmission code verification against your specific vehicle. Call us at +1(216) 230-5433 or email sales@mcclainautopart.com with your VIN, transmission code, and final drive ratio. We confirm compatibility, review the current unit’s mileage and condition documentation, and answer every question before you commit to the purchase.

Clean low-mileage WRX 6-speed inventory moves consistently. If you have questions before ordering, ask them now.