Rear Main Seal Kit

This is a brand new rear main seal kit for 1986–1987 Buick Grand National and Turbo Buick applications, designed to stop oil leaks at the back of the crankshaft and restore proper sealing between the engine and transmission.

Included with the Kit:
Two-piece rear main seal
Side seals
Retaining pins

Here’s what’s not included with the kit (at this exact moment):
Oil pan gasket
Rear main cap bolts

This kit gives you a complete sealing solution for one of the most common oil leak points on Turbo Buick engines. Whether you’re repairing a leak or rebuilding from the block up, this is a critical component for keeping oil where it belongs.

🟦 New Part – Engine Sealing Essential (86–87 Turbo Buick)

Why You Want It
Because rear main leaks make everything messy. Old seals harden, shrink, and lose their ability to seal over time, leading to oil dripping between the engine and transmission. This new rear main seal restores proper crankshaft sealing, helping prevent oil loss, clutch or converter contamination, and driveway stains. If you’re already inside the engine or chasing leaks, replacing the rear main seal is smart insurance that protects your build and keeps your Turbo Buick clean.

All parts are sold as-is with no returns, refunds, or exchanges. Buyer is responsible for verifying fitment for their specific application prior to purchase. Turbo 6 Parts makes no performance guarantees. All sales are final.