3971477 Cummins Genuine Fuel Pump For 6BT5.9 6BT5.9-C180

Product Overview:

3971477 is an Genuine high-pressure mechanical fuel injection pump, exclusively made by Wuxi Weifu for Dongfeng Cummins DCEC 6BT 5.9L 180HP diesel engines. This 6-cylinder inline PL pump with 9.5mm AW plunger delivers superior performance, durability and fuel efficiency for heavy-duty applications.

Core Exclusive Technologies:

✅700 Bar High-Pressure Injection: Reinforced closed housing + integral plunger sleeve hits 700 bar for fine atomization, full combustion and rated 180PS power.

✅Built-in Damping Valve: Stops secondary injection to cut emissions, reduce carbon buildup and lengthen engine lifespan.

✅Upgraded Camshaft: 28mm base diameter + 9mm lift boosts rigidity for steady fuel supply at all RPM.

✅Compact Rigid Build: 25mm cylinder spacing, shorter than standard A-type pumps to fit tight engine bays.

3971477 Fuel Pump Specification:

Proven Applications:

✅Trucks: Dongfeng 153/Violet, EQ1141G, Duolika, Nanjun & Wangpai 180HP dump trucks

✅Construction: Liugong 50C, XGMA951, Lingong 50 loader, Shantui SD16, drill rig compressors

✅Generators: 120–150kW 6BT diesel gensets

✅Buses: Jinlong/Yutong/Zhongtong 180HP coaches

✅Marine: Inland small fishing boat main engines

Why Choose US?

✅ Genuine Cummins specs, calibrated for 6BT5.9-C180

✅ 9.5mm precision plunger saves fuel & stable fuel delivery

✅ Reinforced cast iron build for heavy-duty durability

✅ Bench pre-tested, direct plug-and-fit installation