6204-31-1520 Crankshaft Pulley for Komatsu Excavators PC75 PC78US PC78UU

6204-31-1520 Piston – High-Quality Aftermarket Replacement for Komatsu Engines

Restore full power and efficiency in your Komatsu excavator with this premium aftermarket 6204-31-1520 piston. Engineered as a direct OEM replacement for S4D95 engines, it provides precise fit and durable construction to ensure optimal compression, reduced oil consumption, and smooth engine operation in heavy-duty digging conditions.

Key Benefits for Contractors and Operators

• Restores Engine Power: Precision design delivers proper compression, eliminating low power and excessive smoke for better performance.
• Direct Fit Installation: Matches genuine Komatsu specs for quick, no-modification replacement – minimize downtime during engine rebuilds.
• Built Tough for Heavy Duty Use: High-grade material resists heat, pressure, and wear for longer service life in harsh environments.
• Cost-Effective Alternative: OEM-level quality at aftermarket pricing – ideal for fleet overhauls and budget-conscious repairs.
• Fast Shipping: In stock and ready to ship within 1-3 days.

Compatible Komatsu Models

This piston is commonly used in S4D95 engines for models including (verify your machine’s parts manual for exact fit):

• PC100-6, PC120-6
• PC128US-2, PC130-6 and related series

Specifications

Questions? Contact us for fitment confirmation or bulk pricing. We stand behind our parts with fast shipping and easy returns.