Subaru TY754VN2AA 5-Speed AWD with Matching 3.54 R160 Rear Diff

Subaru 5-speeds with a 3.54 final drive are harder to find than the common 3.90, 4.11 and 4.44 versions. This JDM Subaru TY754VN2AA transmission fills that gap. It’s a 5-speed manual AWD gearbox with a 3.54 final drive, and it comes with the matching 3.54 R160 rear differential. As a result, you get a ratio-matched drivetrain package in one purchase.

Why the Matching Rear Diff Matters

On an all-wheel-drive Subaru, the transmission’s front final drive must match the rear differential exactly. If the ratios differ, the drivetrain binds, which quickly damages the center differential, the transmission and the rear diff. Because this package includes the matching 3.54 R160, that problem is already solved. Therefore, you can install both with confidence.

What a 3.54 Ratio Means for Driving

A 3.54 final drive is a “tall” ratio. In practice, the engine turns fewer RPM at highway speed, so the car cruises more quietly and can use less fuel. On the other hand, acceleration from a stop feels a little softer than with a shorter ratio like 4.11 or 4.44. Consequently, the 3.54 suits drivers who spend lots of time on the highway.

Fitment

Subaru used the TY754 family across several manual-transmission models. Before you order, match the code on your current transmission with TY754VN2AA, or send us your VIN. If you’re changing your car’s ratio, install the included rear diff too, and expect your speedometer to read slightly differently. For background, see the Subaru Impreza overview.

Why Buy JDM?

JDM drivetrain parts often come from lower-mileage cars, thanks to Japan’s strict shaken inspection rules. In addition, a used JDM 5-speed costs far less than a rebuilt unit.

Installation Tips

1. Fill the transmission and rear diff with fresh gear oil of the correct grade.
2. Use the correct clutch kit, release bearing and fork for this transmission’s clutch type, and resurface or replace the flywheel.
3. Inspect the transmission and rear diff mounts.
4. Check the axles and CV boots, and replace any that are worn or torn.

Professional Installation Available

Want it done right the first time? J-Spec Auto Sports installs the engines, transmissions and parts we sell at our shop in Henrico, Virginia, near Richmond. We handle Subaru 5-speed swaps and rear diff installs regularly. To get a quote or book a time, schedule an appointment or call 866-683-3747.

Shipping and Warranty

This TY754VN2AA package includes a 30-day warranty. We drain it, cap it and strap it to a pallet, then ship it by freight anywhere in the continental US. Alternatively, local pickup is available in Henrico, VA.

FAQ

Is the rear differential included?
Yes. It comes with the matching 3.54 R160 rear differential.

Why does the rear diff ratio matter?
On AWD Subarus, the front and rear ratios must match, or the drivetrain can be damaged.

What’s a 3.54 ratio good for?
It’s a tall ratio, so it gives quieter, lower-RPM highway cruising and can save fuel.

Will my speedometer change?
If you’re switching from a different ratio, it may read slightly differently.

Is there a warranty?
Yes, 30 days.

Can you install it?
Yes, at our Henrico, VA shop. Call 866-683-3747.