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- KMP Exhaust Valve Stem Seal U20406140
KMP Exhaust Valve Stem Seal U20406140
U20406140 is a KMP Brand exhaust valve stem seal, packed to reseal the engine after it has been opened for repair.
About this part
A leaking joint on a generator engine is more than mess: oil on a hot manifold is a fire risk, and a slow coolant leak shows up as an overheating shutdown at the worst possible time.
When to replace it
- Oil or coolant weeping from a joint
- Low oil level between services with no smoke
- Hardened, cracked or flattened old seals
- Any repair that opens the joint
Before you order
Clean both faces back to bare metal, avoid sealant unless the engine maker calls for it, and tighten covers evenly so the gasket is not crushed on one side.
If the old part has no readable number, send us a clear photo with the engine or alternator nameplate and we will identify it before you buy.
Questions
What is the difference between a top and a bottom gasket set?
A top set covers the joints above the block deck: head, manifolds and covers. A bottom set covers the sump, timing case and crankshaft seals.
Specifications
| Part number | U20406140 |
|---|---|
| Brand | KMP Brand |
| Range | Gaskets & Gasket Sets |
Not sure it fits?
Send us the number on your old part, or a photo with the engine or alternator nameplate, and we'll confirm the match.
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