Peerless Industrial Group
Peerless Industrial Group Tire Chains Single Bus & RV V-Bar PK2 QG2821
$67.99
0.00081445BTC
In stock
Fel-Pro
Fel-Pro BS40646 Rear Main Gasket
A transparent rear main gasket that seals the crankshaft to prevent oil leaks
- ColorTransparent
- Fel-Pro BS40646 rear main gasket seals the crankshaft rear journal
- Transparent material allows quick visual inspection before installation
- Fel-Pro brand trusted by engine builders for reliable sealing performance
- New condition ensures clean, undamaged sealing surfaces out of the box
- Listed by manufacturer in 2024 for current application coverage
Fel-Pro Rear Main Gasket BS40646
This Fel-Pro gasket seals the rear main bearing area of an engine. It is intended for technicians and engine builders performing a rebuild or a seal replacement. The transparent colour helps confirm correct positioning during installation. Condition is new and the part is supplied directly from the manufacturer.
Practical limits of a rear main gasket
A rear main gasket only seals the junction between the crankshaft and the block at the back of the engine. It does not address leaks from the oil pan, timing cover, valve covers or any other sealing surface. The gasket material must withstand oil exposure and crankshaft rotation without extruding. Installation requires the crankshaft to be accessible, which usually means the transmission and flywheel are removed.
Replaces a worn or leaking original seal
This gasket replaces a factory rear main seal that has hardened, shrunk or started to leak oil onto the flywheel or clutch. The upgrade is worth it when the engine is already open for other work or when oil loss at the rear of the block is confirmed. It is not for builders who need a complete overhaul kit or who are resealing the front of the engine at the same time.
Highlights
- Fel-Pro BS40646 rear main gasket seals the crankshaft rear journal
- Transparent material allows quick visual inspection before installation
- Fel-Pro brand trusted by engine builders for reliable sealing performance
- New condition ensures clean, undamaged sealing surfaces out of the box
- Listed by manufacturer in 2024 for current application coverage
Specifications
| Brand | FEL-PRO |
|---|---|
| Color | Transparent |
Questions about this item
Which Fel-Pro rear main gasket version matches my engine?
The BS40646 is a single rear main gasket listed by Fel-Pro; confirm the part number against your vehicle service manual before ordering.
What does the transparent colour indicate once the gasket is installed?
Transparent material lets you visually confirm seal seating and spot contamination during assembly without removing the cover.
Does the gasket conform to a specific industry standard that limits its application?
No industry standard is referenced for the BS40646; it is supplied as a direct-replacement Fel-Pro part for the listed applications.
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