2128917 Insert-Vlv Ex Fits Caterpillar Models
2128917 Insert-Vlv Ex Fits Caterpillar Models
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One New Aftermarket Replacement Exhaust Valve Seat Insert for Caterpillar (Cat) C9 Diesel Engines
This exhaust valve seat insert (Insert-Vlv Ex) is a press-fit cylinder head component for the Caterpillar C9 diesel engine. Seated into the cylinder head counterbore, it provides a precise, durable sealing surface for the exhaust valve, dissipating high exhaust temperatures and preventing wear to the cylinder head. It is machined from high-strength steel alloy to withstand the extreme heat and pressure cycles of heavy-duty diesel operation.
Specifications
- Part Type: Exhaust Valve Seat Insert
- Material: Steel alloy casting
- Approximate Outer Diameter: 31 mm
- Engine: Caterpillar C9 (C-9)
Compatible Models
Caterpillar (Cat) - C9 Engine Applications: Equipment powered by the Caterpillar C9 diesel engine, including excavators, wheel loaders, and other heavy construction machinery equipped with the C9 powerplant.
Replaces Part Number(s):
2128917, 212-8917
New aftermarket replacement part - not remanufactured, not used.



