When you convert a Subaru all wheel drive transmission or transaxle to two wheel drive, you are changing how the drivetrain is set up. That change affects what the rear of the transmission or transaxle needs to stay properly sealed.
One issue many people want to avoid during this type of modification is oil leaking out the rear of the transmission or transaxle. That is where a block-off cover plate becomes important. It is a simple concept, but it can solve a specific problem that shows up when the rear output area is no longer being used the same way as it was in an AWD setup.
This post explains why the cover plate matters, where it goes, and when it is relevant in a Subaru AWD to 2WD conversion using a five-speed unit.
What Changes When You Modify an AWD Transmission or Transaxle to 2WD
A Subaru AWD transmission or transaxle is built around an all wheel drive configuration. When you modify it so the vehicle becomes 2WD, the setup is no longer the same. The rear of the transmission or transaxle is one of the areas that can be affected by that change.
During this kind of conversion, it is common to focus on the back of the unit because that is where the rear output area is located. Once the conversion work is happening, builders often need a clean way to close off that rear output location to match the new 2WD direction of the build.
Why the Rear Area Matters for Leaks
Oil control is a practical part of any transmission or transaxle-related modification. When you are changing an AWD unit into a 2WD unit, the rear of the transmission or transaxle can become a place where oil may leak out if it is not properly closed off.
That is the core reason a block off cover plate matters. The whole purpose is to prevent oil leaking out of the rear of the transmission or transaxle after you have modified the unit for 2WD.
Even if the rest of the conversion is going smoothly, a rear leak can turn into an ongoing frustration. It can create a mess under the vehicle and force you to keep checking the rear area instead of focusing on enjoying the build. Preventing rear leakage is not a minor detail. It is a functional requirement for a clean result.
What a Block Off Cover Plate Is in This Context
A block-off cover plate is designed to close off a specific opening or cover location. In this case, it is built for a Subaru five-speed transmission or transaxle.
The idea is straightforward. If you are converting an AWD transmission or transaxle to 2WD, you need a way to block off the rear output location. The block off cover plate is made to be that solution, with the goal of preventing oil leaking out the rear of the unit.
Where the Cover Plate Fits
Fitment is what makes this part relevant for the conversion.
This block off cover plate fits in place of the rear output cover on the back of the Subaru transmission or transaxle.
That location is why it matters. It is not a general accessory part. It is meant for a specific spot on the unit during a specific type of modification.
When This Part Is Relevant
This cover plate is relevant when all of the following match your situation.
- You are modifying a Subaru all wheel drive transmission or transaxle
- The goal of the modification is to make the vehicle two-wheel drive
- You want to prevent oil leaking out the rear of the transmission or transaxle
- You are working with a Subaru five-speed transmission or transaxle
If that describes your build, the rear output cover location is one of the areas you need to address. This part is designed to handle that need.
What Is Included
The parts list is simple.
- Subaru five-speed transmission or transaxle block-off cover plate
Quick Questions People Ask Before Ordering
Is This for AWD to 2WD Conversions
Yes. It is intended for individuals modifying a Subaru AWD transmission or transaxle to convert the vehicle to 2WD.
What Problem Is It Meant to Prevent
It is intended to prevent oil from leaking out of the rear of the transmission or transaxle.
Where Does It Go
It fits in place of the rear output cover on the back of the Subaru transmission or transaxle.
About Specialised Parts
Specialised Parts focuses on product-based solutions for VW and Subaru conversion builds in the United States. Our positioning emphasizes manufacturing, with product descriptions that stay focused on what the part is, where it fits, and what it is designed to do.
For this product, the value is specific and practical. It is a Subaru 5-speed transmission or transaxle block off cover plate that fits in place of the rear output cover on the back of the unit. It is presented as a solution for builders modifying a Subaru AWD transmission or transaxle to make a vehicle 2WD, with the goal of preventing oil from leaking out the rear of the transmission or transaxle.