Perkins original Perkins 4P9830 Diesel Fuel Injection Pump Plunger Element for 3304 3306 Engine new injector original new injector

The Perkins 4P-9830 fuel injector plunger and barrel assembly is engineered to deliver precise fuel metering and consistent injection performance across a wide range of Perkins heavy-duty diesel engines. Designed as a direct OEM replacement, this component is compatible with Perkins 3306C, 3306B, 3406, 3406B, and 3406C engine platforms, as well as 973C, 966 series, 815B/F, R1300, and SR4 generator applications. Cross-references including H4P9830, M-4P9830, 103-2961, 1032961, and 1W-6541 ensure broad interchangeability for service operations.

Manufactured from premium-grade alloy steel, the plunger and barrel assembly is vacuum heat treated, precision ground, and mirror finished to achieve micron-level dimensional accuracy. High-precision ground surfaces and OEM-spec hardness deliver the durability required for high-pressure diesel injection systems operating in construction, mining, power generation, agriculture, forestry, and marine environments. The 10.5 mm diameter plunger is built to exact tolerances, supporting stable injection pressure, smooth plunger travel, and reduced wear over extended service intervals.

Each unit is supplied new and backed by a 12-month warranty, with global shipping available for distributors, service shops, and fleet operators. To maximize service life, installation should be carried out in a clean environment using recommended injector service tools, with verification of pump bore condition, clean diesel lubrication, correct plunger orientation, and post-installation pump calibration. Routine use of clean diesel, filter maintenance, and water-contamination prevention will further protect injection system performance.