3901793 Cummins Piston Pin For 4BT3.9 6BT5.9 Engines

Product Overview:

The 3901793 is a genuine and high-precision piston pin engineered for Cummins B-series diesel engines.Designed to withstand extreme mechanical stress, high temperature and cyclic friction during engine operation, this part delivers stable power transmission, reduces operational vibration, and ensures the precise and durable operation of diesel engine assemblies. It is a key wearable part for routine engine maintenance and overhaul.

3901793 piston pin Specification:

✅Carburized high-carbon alloy steel: wear-resistant surface & impact-tough core

✅Tight geometric tolerances for seamless fit, no abnormal engine noise

✅Mirror-smooth surface (Ra ≤0.2 μm) cuts friction and extends component lifespan

✅Stable at continuous high temp, ideal for heavy-duty trucks & construction machinery engines

Application:

✅Commercial Vehicles: Cummins B-series light/medium trucks, dump & logistics trucks

✅Construction Machinery: Excavators, loaders, rollers, pavers for mining & earthworks

✅Power Generation: Mobile/stationary generators for factory, site & emergency power

✅Agricultural Machinery: Tractors, harvesters, irrigation pumps for long-duration operation

✅Marine & Industrial Units: Marine auxiliary engines, industrial pump drive assemblies

Why Choose US?

✅Professional China-based Cummins parts supplier

✅Genuine Cummins quality, strict factory inspection

✅Direct factory supply with competitive cost advantage

✅Stable stock & fast global delivery

✅Technical matching support for all B-series engines