Fel-Pro BS40183 Rear Main Seal Set
A rear main seal set designed to prevent oil leaks at the engine crankshaft rear
- Product colorTransparent
- Designed for engine rebuilds with Fel-Pro reliability
- Transparent material allows visual inspection before installation
- Rear main seal set addresses critical crankshaft sealing
- Manufacturer-direct sourcing ensures authentic Fel-Pro quality
- First listed February 2025 for current production availability
Rear Main Seal Set BS40183
This Fel-Pro rear main seal set is designed for engine rebuilds where the crankshaft rear seal must be replaced. It suits professional technicians and experienced DIY mechanics performing bottom-end work on compatible applications. The transparent colour helps confirm correct seating during installation.
Verify crankshaft rear seal dimensions before
Confirm that the engine block and crankshaft journal match the seal profile required for this BS40183 kit. Check for existing wear or groove damage on the sealing surface that could prevent a proper fit. Ensure the correct installation tool is available to avoid distorting the new seal.
Performs under continuous engine heat and vibration
The seal maintains its integrity through repeated thermal cycles and sustained crankshaft rotation. It resists extrusion and hardening during extended operation at normal operating temperatures. Durability is consistent across long service intervals rather than only during initial break-in.
How it compares
Measured against everything we stock in Engine Service & Diagnostic Tools, at today’s prices. Recalculated every night.
- Price $18.99
- Typical for this category: the median of 1,113 items is $19.99.
Specifications
| Product | |
|---|---|
| Brand name | FEL-PRO |
| Product color | Transparent |
Questions about this item
Does the Fel-Pro BS40183 Rear Main Seal Set include installation hardware or must that be purchased separately?
The set contains the rear main seal components; any required installation tools or hardware are sold separately.
Is the transparent BS40183 the only version available or are there other material options?
The listing shows a single transparent version; no alternative material options are presented.
Once fitted in the engine, what does the rear main seal do?
It seals the crankshaft rear journal to keep oil inside the block and prevent leaks onto the flywheel or transmission.
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