3966721 4941395 Diesel Piston for Genuine Machinery Engine ISL 6L QSL9

Diesel Piston 3966721 4941395 Aftermarket Engine Spare Part for cumm-ins ISL 6L QSL9 Heavy-Duty Machinery Engine Replacement Part

Search Keywords

3966721, 4941395, Diesel Piston, cumm-ins ISL piston, cumm-ins 6L piston, QSL9 piston, ISL engine parts, QSL9 engine spare parts, diesel engine piston, construction machinery replacement parts

Product Overview

This Diesel Piston, Part No. 3966721, 4941395, is a core reciprocating component for cumm-ins ISL, 6L and QSL9 diesel engines. It transfers power generated by fuel combustion, operating under extreme high temperature, high pressure and cyclic impact loads. Our aftermarket piston is precision manufactured according to OEM specifications, with excellent high-temperature resistance, structural strength and stable thermal expansion performance. It is widely applied in construction and mining heavy equipment, serving as reliable replacement spare part for engine overhaul and rebuilding.

Detailed Specifications

Key Features & Advantages

✅ OEM Precision Dimension & Groove Design Produced strictly following original technical drawings, accurate pin hole and ring groove size, perfectly matches piston rings and cylinder liner.

✅ Premium High-Strength Aluminum Alloy Adopt high-grade aluminum alloy material, outstanding heat resistance and impact resistance, less deformation under continuous heavy load operation.

✅ Optimized Internal Cooling Structure Efficient heat dissipation design reduces piston operating temperature, effectively prevents piston scuffing and cracking failure.

✅ Complete Set with Piston Pin & Retaining Circlips Comes with matched piston pin and circlips for one-stop installation during engine overhaul, saving your preparation time for accessories.

✅ Full Quality Test Before Shipment Each piston undergoes dimension and appearance inspection before delivery to ensure stable working performance.

Application Scope

Fit for cumm-ins ISL, 6L, QSL9 diesel engine, widely used on:

• Heavy duty excavators
• Mining dump trucks
• Bulldozers
• Generator sets
• Other heavy engineering machinery equipped with ISL /6L / QSL9 engine

Our Company Advantage

We are a professional supplier for full series cumm-ins engine spare parts. We can supply complete overhaul kits including pistons, piston rings, cylinder liners, cylinder heads, gaskets, bearings and other wearing spare parts.

• Rich stock for most popular cumm-ins engine models
• Competitive factory direct price
• Fast shipment for in‑stock goods
• Accept mixed container order for one‑stop spare parts purchasing
• Provide professional technical matching service for your part number inquiry

Packaging & Shipping

1. Independent shockproof packaging for piston, piston pin and circlips
2. Outer carton with shock‑proof protection for sea transportation
3. Support sea freight, air freight, express delivery for small trial order
4. Full export document can be offered (Commercial Invoice, Packing List)

Contact Us

If you need more spare parts for cumm-ins ISL 6L QSL9 engine or other construction machinery, please send your part list to us. We will offer you our best quotation immediately.