1478218 Insert-Valve Exh Fits Caterpillar Models
1478218 Insert-Valve Exh Fits Caterpillar Models
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One New Aftermarket Replacement Exhaust Valve Seat Insert for Caterpillar (Cat) 3126 / C7 Engines
This aftermarket replacement exhaust valve seat insert (1478218) fits into the cylinder head of Caterpillar 3126, 3126B, 3126E, and C7 diesel engines. The valve seat insert provides the sealing surface for the exhaust valve in the cylinder head, helping maintain combustion chamber integrity and proper heat transfer from the valve during engine operation.
Specifications
- Inner Diameter (ID): 39.5 mm
- Outer Diameter (OD): 46 mm
- Material Thickness: 6.05 mm
- Weight: 0.03 lbs
- Type: Exhaust valve seat insert
Compatible Models
Caterpillar Motor Graders: 120H, 120K, 12K, 12M, 135H, 140K, 140M, 160K
Caterpillar Excavators: 322C, 322C FM, 324D, 324D L, 324D LN, 325C, 325C FM, 325D, 325D L, 328D LCR
Caterpillar Wheel Loaders: 938G II, 950G II, 950H, 962G II
Caterpillar Track-Type Loaders / Tractors: 953C
Caterpillar Pipelayers / Forestry: 561N, 570B, 580B
Caterpillar Asphalt Pavers: AP-755
Caterpillar Cold Planers: PM-102
Caterpillar Engines: 3126, 3126B, 3126E, C7, C9, C15
Caterpillar Generators: SR4
Replaces Part Number(s):
1478218, 147-8218
Aftermarket Interchange Numbers
CA1478218, 2321285, 232-1285
New aftermarket replacement part - not remanufactured, not used.



