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Caterpillar · Engine
2271204
In stock · ships from Knoxville
A cylinder head gasket spacer shim used on Caterpillar diesel engines, including C15, 3406E, and C18 families.
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Verified fitment for 6 applications
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All confirmed applications for this part number.
Caterpillar
Caterpillar
Also fits various Cat machines (e.g., 385C L excavator, 740 articulated truck) that use these engine families. Spacer shim thickness may vary by application; verify with engine serial number for exact thickness needed.
Part data verified against 5 catalog sources
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This thin metal plate is installed between the cylinder head and the block—typically alongside a standard head gasket—to fine-tune the piston-to-head clearance after deck resurfacing or gasket thickness changes. You replace it during an engine overhaul or whenever the cylinder head is removed, ensuring correct squish clearance and preventing head-gasket leaks. Using the correct shim thickness is critical to avoid piston or valve contact and maintain compression.
Part Number: 2271204
SHIM GASKET
Dealer: Knox Trailers
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