WESPC Diesel Engine 2643D640 Fuel Injection Pump For Perkins T4.236

Application:

The 2643D640 fuel injection pump provides precise metering and high-pressure delivery for Perkins T4.236 and AT4.236 turbocharged diesel engines (4.0 L), widely employed in agricultural tractors such as Massey Ferguson 265, 275, 290, 390T, 398; Landini 10000 Series; Fiat 640; combine harvesters including Massey Ferguson 750, 760, 850; White 8600 Series; generator sets by FG Wilson, KOHLER, and Fairbanks Morse; and industrial machinery like stationary pumps, compressors, and hydraulic power units driven by Perkins T4.236 engines.

Technical specifications:

Pump type: inline plunger injection pump; number of plungers: 4; maximum injection pressure: 2 050 bar; maximum fuel delivery: 125 L/h at rated speed; plunger diameter: 7.94 mm; cam ring diameter: 58 mm; drive interface: 12-tooth spline; fuel inlet port: 8 mm BSPP; outlet fitting: M10 × 1; overall dimensions: 180 mm × 140 mm × 95 mm; weight: 7.2 kg.

Material & performance features:

The pump housing is cast from high-strength aluminum alloy for rapid heat dissipation, while the internal cam ring and plungers are precision-machined from nitrided alloy steel for superior wear resistance. Plungers receive a ceramic coating and operate in ultra-smooth bores to minimize friction and withstand abrasive fuel contaminants. Fluorocarbon seals resist degradation from diesel, biodiesel blends, and common fuel additives. An integrated mechanical governor in a stainless-steel chamber ensures stable fuel delivery under transient load changes, and all external surfaces feature a phosphate-based corrosion-inhibitive finish.

Interchange part numbers:

PERKINS 2643D640; MASSEY FERGUSON 3837561M91; LANDINI 947602M91; FIAT 4220869; WEICHAI WG2643D640