WESPC 131010080 Fuel Injection Pump for Perkins 1004-4T Engine with 12mm Plunger and 1750 Bar Pressure

WESPC 131010080 inline high-pressure fuel injection pump engineered for Perkins 1004-4T and 1004-4TW turbo-diesel engines. This precision component delivers optimal fueling performance for agricultural, construction, and power generation applications.

Specifically calibrated for Perkins 1004-4T and 1004-4TW turbo-diesel engines (4.0L, 4-cylinder) powering:

• Massey Ferguson 6400-series and 8200-series tractors
• Landini Legend 115/130/145 row-crop and vineyard machines
• JCB 4CX super backhoe loaders and 535-95/540-70 telescopic handlers
• FG Wilson P27-6 and Pramac GSW100P enclosed generator sets

These engines produce 85-112 kW at 2,200 r/min and comply with EU Stage II/EPA Tier 2 emission standards, requiring precise fueling for optimal performance across diverse operating conditions.

• Forged-steel one-piece inline housing with Ø42 mm camshaft bore
• SAE J744 size 3 flange mounting with four M12 threaded holes on 152 mm PCD
• 12 mm plunger diameter with 11 mm stroke
• Peak injection pressure: 1,750 bar
• Integrated duplex feed pump: 200 L/h at 550 kPa
• Centrifugal automatic advance mechanism: 9° crankshaft advance from 800 to 2,400 r/min
• Drive hub accepts 15 mm Woodruff key, dynamically balanced to ISO 1940 Grade G2.5
• Static timing: 11° BTDC ±1° with ±3° fine adjustment via vernier coupling
• FKM (Viton) compound gaskets and O-rings compatible with biodiesel blends up to B20
• Operational temperature range: down to -45°C with ultra-low-sulphur winter diesel

• Plunger and barrel assembly: vacuum-remelted 18CrNiMo7-6 alloy steel, carburised to 1.1 mm case depth
• Super-finished surfaces: 0.12 µm Ra for minimal leakage and enhanced durability
• Camshaft lobes: induction-hardened to 62-66 HRC
• Roller tappets: tungsten-carbide PVD coating reduces boundary friction by 35%
• Aluminium governor flyweight carrier with bronze bushings and PTFE-impregnated thrust faces
• Stable idle speed and load response within 1.5% of set point
• High-pressure steel galleries: laser-welded and cold-rolled to eliminate micro-cracks
• Mechanical overspeed fuel shut-off: IP67-rated glass-fiber-reinforced polyamide cover
• Integral viscous torsional vibration damper limits peak twist to

PERKINS 131010080, 131010081, 131010082; MASSEY FERGUSON 3638723M91, 3638724M91; LANDINI 747604M91, 747605M91; JCB 331/20251, 331/20252; FG WILSON 10000-45210; PRAMAC 6000-45210; reference equivalent to 1-12320-680-0 and 04279-0L060 assemblies.