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1258869 Crown As Fits Caterpillar Models
1258869 Crown As Fits Caterpillar Models
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$340.00 CAD
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One New Aftermarket Replacement Piston Crown Assembly for Caterpillar (Cat) 3406 Series Engines
This aftermarket replacement piston crown assembly (Cat part 1258869 / 125-8869) is the upper portion of the two-piece piston used in Caterpillar 3406B, 3406C, and related 3406 series diesel engines. The shallow-bowl combustion bowl crown interfaces with the piston skirt and carries the piston ring grooves in the 14.6-liter inline six-cylinder engine. It is commonly needed during in-frame overhauls and top-end rebuilds on this platform.
Specifications
- Part Type: Piston Crown Assembly (shallow bowl design)
- Engine: Caterpillar 3406 Series - 14.6L (893 CID), Inline 6-Cylinder Diesel
- Bore: 137 mm (5.4 in)
- Stroke: 165 mm (6.5 in)
- Compression Ratio: 14.6:1
- Design: Two-piece piston (crown mates with separate piston skirt)
Compatible Models
Caterpillar Engines: 3406B, 3406C
Caterpillar Equipment: PM-465 Cold Planer, RM-350B Reclaimer/Mixer, SM-350 Road Reclaimer/Stabilizer Mixer
Replaces Part Number(s):
1258869, 125-8869
New aftermarket replacement part - not remanufactured, not used.



