Injector Line Set for Cummins 4B Engines with Inline Bosch Pump

Fits Models At A Glance:

• Cummins B-Series Engines (Inline Bosch Pump Only):

  • 4-390

  • 4T-390

• Case Skid Steers:

  • 1840, 1845C

  • 60XT, 70XT, 75XT, 85XT, 90XT, 95XT

• Case Backhoe Loaders:

  • 580L, 580 Super L

  • 590 Super L

  • 580M, 580 Super M

  • 590 Super M

• Case Loader / Landscaper Models:

  • 570LXT, 580MXT

• Case Trenchers:

  • 660, 860, 960

• Case Forklifts:

  • 584E, 585E, 586E

  • 585G, 586G, 588G

• Case Wheel Loaders:

  • 521D

• Case Dozers:

  • 550G, 550H

  • 560K

  • 650G, 650H

  • 750H, 750K

  • 850K

• Case Telescopic Handlers:

  • 686G, 686GXR, 688G

Key Notes:

• Application:

  • Complete injector line set for Cummins 4-cylinder engines with Bosch inline injection pump

• Engine Type:

  • Cummins B-Series 4-cylinder diesel

• Pump Type:

  • Bosch inline injection pump only

• Pump Mounting:

  • 4-bolt inline configuration

• Material:

  • Precision-formed steel fuel lines

• Function:

  • Delivers metered high-pressure fuel to all four injectors for proper timing and combustion

• Kit Part Number:

  • J9321597K

• Weight:

  • 1 lb (0.45 kg)

• Interchange:

  • Direct replacement for original Case injector line set

• Notes:

  • Will NOT fit rotary or 3-bolt Bosch pump systems

Kit Includes:

• #1 Injector Line – Inline Bosch

• #2 Injector Line – Inline Bosch

• #3 Injector Line – Inline Bosch

• #4 Injector Line – Inline Bosch

Why Choose Broken Tractor:

• ✅ Complete Inline Pump Solution:

  • All four injector lines matched for Bosch inline systems

• ✅ Precision Fuel Delivery:

  • Maintains correct injector pressure and timing across all cylinders

• ✅ Fast Shipping from a U.S.-Based Team:

  • Reduce equipment downtime with quick fulfillment