1684540PK Piston Kit Fits Caterpillar Models

One New Aftermarket Replacement Piston Kit for Caterpillar (Cat) 3400 Series Engines

This aftermarket replacement piston kit is designed for Caterpillar 3400 series diesel engines, including the 3406C. The kit services one cylinder and contains all the components needed for a quality engine rebuild or overhaul: piston crown and skirt assembly, piston rings, piston pin, and retainers. The piston crown measures 136.98mm (approximately 5.39 in.) in diameter. These engines power a wide range of Caterpillar construction, compaction, and earthmoving equipment, making this kit a core rebuild part for fleet maintenance and major overhaul work.

Kit Includes

• Piston (crown and skirt assembly)
• Piston rings
• Piston pin
• Retainers

Specifications

• Piston crown diameter: 136.98mm (approx. 5.39 in.)
• Engine: Caterpillar 3400 series (3406C)

Compatible Models

Caterpillar Pipelayers: 578, 583R

Caterpillar Wheel Dozers / Wheel Tractor-Scrapers: 824C, 824G

Caterpillar Soil Compactors / Landfill Compactors: 825G, 826C, 826G

Caterpillar Wheel Loaders: 980C, 980G

Caterpillar Track-Type Tractors: D8N, D8R, D8R II

All models above are powered by the Caterpillar 3406-series diesel engine. Verify your engine model and serial number before ordering.

Replaces Part Number(s):

1684540PK, 168-4540, 1684540, CA1684540, LK1684540

Aftermarket Interchange Numbers

0R9847, 0R3757, FP-LK1684540, M-1684540, 5183974, 1684540LK

New aftermarket replacement part - not remanufactured, not used.