2339473 Gasket Kit Fits Caterpillar Models
2339473 Gasket Kit Fits Caterpillar Models
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One New Aftermarket Replacement Valve Grind Gasket Kit for Caterpillar (Cat) 3406B Engine
This aftermarket replacement cylinder head (valve grind complete) gasket kit provides all gaskets, locks, o-rings, and seals required to assemble the cylinder head on the Caterpillar 3406B diesel engine from the top of the cylinder block upward. Designed for valve grind and top-end service work, this kit is an essential component for 3406B engine rebuilds and cylinder head repairs across construction, industrial, marine, and on-highway applications.
Compatible Engine
Caterpillar (Cat) 3406B: Serial Prefix 6TB, Serial Numbers 7990-9856
Note: This kit is fitment-specific to the 6TB serial prefix range (7990-9856). Verify your engine serial number before ordering to confirm compatibility.
Replaces Part Number(s):
2339473, 7C6843
Aftermarket Interchange Numbers
CT-2339473
New aftermarket replacement part - not remanufactured, not used.



