Caterpillar original 6N7527 HP Fuel Injection Pump Plunger for Diesel Excavator Engines 3306 3406 3304, Replacement for OEM, for 330 Excavator, Cross Reference 4P9830 1086633 original new injector

For B2B buyers including diesel parts distributors, heavy equipment fleet operators and maintenance service providers, the Caterpillar 6N7527 Fuel Injection Pump Plunger Assembly is a mission-critical component designed for Caterpillar mechanical fuel injection pump systems. As the core pressure-generating element inside the pump, it builds high injection pressure, precisely meters fuel delivery volume, and regulates injection timing to support efficient combustion, consistent engine output and reduced exhaust emissions. It ranks among the most in-demand fuel injection components in the global aftermarket diesel parts sector.

Constructed from high-alloy hardened steel and processed with precision grinding and lapping technology, the 6N7527 plunger assembly delivers exceptional wear resistance and dimensional stability under sustained high-pressure diesel injection conditions. Manufactured to OEM equivalent standards, this brand-new component ensures precise fit and reliable long-term performance, and comes with a 12-month warranty to lower procurement risk for buyers. Its robust design also helps reduce long-term maintenance costs for end equipment operators.

It is compatible with a broad range of Caterpillar diesel engines including 3208, 3304, 3306, D330C and D333C, and fits diverse heavy equipment models such as excavators, loaders, tractors, skidders, wheel dozers and compactors. It supports construction, mining, marine propulsion, industrial power and generator set applications worldwide, with multiple cross-reference numbers to simplify part matching for global clients.