Cummins B3.9 Parts

46 parts fit the Cummins B3.9. Every part is listed with its Cummins part number so you can match it to your parts manual. Choose genuine or quality aftermarket parts — we quote within 24 hours and ship worldwide.

• 3897197 — Fuel Injector (engine)
• 3288554 — V Ribbed Belt (engine)
• 3976797 — Flexible Hose (engine)
• 5402949 — Water Pump (engine)
• 5262113 — Fuel Supply Tube Kit (engine)
• 5257222 — Fuel Supply Tube (engine)
• 4988377 — Alternator (generator)
• 4933436 — Alternator (engine)
• 5476863 — Starter Motor (engine)
• 5565913 — 24V Starter Motor (engine)
• 5266445 — Oil Cooler Core Gasket (engine)
• C3904981 — Alternator Fan (engine)
• 3905440 — Oil Filter Tube (construction)
• 3804980 — Piston Kit (engine)
• 3914868 — Cover Plate (construction)
• 3929565 — Gear Housing (engine)
• 4990291 — Oil Cooler Core (engine)
• 5361595 — Cylinder Head Assembly (engine)
• 4994848 — 6 Pieces Grommet Seal (engine)
• 5346429 — Oil Pump (engine)
• 4994692 — Oil Pan Threaded Plug (engine)
• 3901364 — Fan Hub (engine)
• 4931171 — Male Connector (engine)
• 3905649 — Fuel Tube (engine)
• 4898590 — V-Band Clamp (construction)
• 2872792 — Temperature Sensor (engine)
• 3928405 — Valve Cover With Cap (farm)
• 5365772 — Push Rod Cover & Gasket (engine)
• 5594276 — Position Sensor (engine)
• 3929028 — Camshaft Gear (engine)
• DS3906659 — Seal - 552 / 4Bt3.9-C100 / D4L2008 / B3.9 / C8.3Gen (engine)
• DS3802747 — Piston Kit - B3.9 / 4B3.9 (Standard) (engine)
• 3666087 — SERVICE MANUAL - B3.9 / B5.9 (1991 TO PRESENT) Genuine Cummins Part (engine)
• 5270739 — Hydraulic Power Steering Pump (engine)
• 5257187 — Cylinder Head Gasket (engine)
• 4891179 — 6 Pieces Connecting Rod Bolt (construction)
• 4093731 — Fuel Water Separator (engine)
• 3920795 — Oil Tube (engine)
• 3918675 — Gear Case Cover (construction)
• 3802747 — Piston Kit (engine)