1258869PK Piston Kit Fits Caterpillar Models

One New Aftermarket Replacement Piston Kit for Caterpillar (Cat) 3406C Engine

This aftermarket replacement piston kit fits the Caterpillar 3406C diesel engine and is used in engine overhaul and rebuild applications. The kit provides the components needed to renew cylinder assemblies, restoring compression and power in the 3406C's inline six-cylinder diesel engine found in a wide range of Cat construction, industrial, and road machinery.

Specifications

• Engine: Caterpillar 3406C
• Piston Crown Part Number: 1258869 (also formatted 125-8869) - Shallow Bowl
• Piston Design: 2-piece articulated piston (steel crown with aluminum skirt)
• Compression Ratio: 14.6:1
• Kit Contents: Piston crown, piston skirt, piston rings, piston pin, and retainers

Serial Number Restriction

Important: This piston kit is confirmed for Caterpillar 3406C engines with the 3ER engine serial number prefix. Additional serial prefixes confirmed for the 1258869 piston crown include: 4ZR, 4JK, 1LS, and 41Z. Verify your engine serial number before ordering, as piston kits for the 3406C vary by serial range.

Compatible Models

Caterpillar 3406C Engine Applications: Cold Planer PM-465, Road Reclaimer/Stabilizer Mixer RM-350B, Stabilizer Mixer SM-350

The Caterpillar (Cat) 3406C engine was also widely used in on-highway trucks, generator sets, and marine applications. Confirm your engine serial number and piston number before ordering.

Replaces Part Number(s):

1258869PK, 1258869, 125-8869

New aftermarket replacement part - not remanufactured, not used.