SKU: COA12087
MPN: COA-12087
The Rear Block Off Plate for GM Powerglide by COAN is an essential sealing component designed for builders and mechanics working with Powerglide automatic transmissions in high-performance and street applications. This precision-engineered plate blocks off the rear extension housing opening, preventing fluid leakage and maintaining transmission integrity when the stock tailshaft is removed or replaced with custom driveline components.
Whether you're upgrading to a shorter tailhousing, installing a custom yoke, or converting to a different driveshaft configuration, this block off plate ensures a clean, leak-free seal. Built to OEM specifications, the Rear Block Off Plate features precise engineering that matches GM Powerglide housing dimensions, ensuring proper fitment and sealing without gaps or misalignment. Its durable construction withstands the heat and pressure cycles of transmission operation.
This block off plate is ideal for restorers, drag racing enthusiasts, and transmission shops fabricating custom driveline solutions for GM-powered vehicles. Installation requires access to the rear transmission housing and basic mechanical knowledge, making it a straightforward addition to any Powerglide setup.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
