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#1 Injector Line for Case Cummins 4-390 with 3-Bolt Bosch Rotary Pump

SKU:
J903480
FitsModel:
580SK, 580SL, 590T, 590SL, 450C, 455C, 650, 650G, 90XT, 95XT, 860, 688, 688B, 688C, 9010, W11B
ListDescription:
#1 Injector Line (Rotary Bosch)
Part # J903480

Fits Models At A Glance:

  • Cummins B-Series Engines (Rotary Bosch Pump Only):
    4B-390, 4BT-390

  • Case Backhoe Loaders:
    580 Super K, 580 Super L, 590T, 590 Super L

  • Case Dozers:
    450C, 455C, 650, 650G

  • Case Skid Steers:
    90XT, 95XT

  • Case Trenchers:
    860

  • Case Excavators:
    688, 688B, 688C, 9010

  • Case Wheel Loaders:
    W11B

Key Notes:

  • Function: Delivers high-pressure fuel from injection pump to #1 injector

  • Injector Position: Cylinder #1, Closest to fan

  • Pump Type: Bosch rotary injection pump

  • Pump Mounting: 3-bolt flange configuration

  • Engine Type: Cummins B-Series 4-cylinder diesel

  • Material: Precision-formed steel fuel line

  • Part Number: J903480

  • Interchange With: 3903480

  • Application: Case construction and industrial diesel equipment

  • Notes: Will NOT fit inline or 4-bolt Bosch injection pumps or CAV/Lucas Pump

Why Choose Broken Tractor:

  • ✅ Correct Pump Configuration: Designed specifically for 3-bolt Bosch rotary systems

  • ✅ Accurate Fuel Delivery: Maintains proper injector timing and pressure

  • ✅ Fast Shipping from a U.S. Team: Reduce downtime on working machines

$45.00

Shipping charges are calculated at checkout.
Items are NOT guaranteed to be in stock at the time of order.
Refunds are offered if the item is on back-order.

Can’t Find What You’re Looking For?

Our knowledgeable staff will be happy to help you with any of your tractor, backhoe, dozer, or engine parts needs.

1-800-909-7060 Parts Request Form

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Shipping & Return Policy

Do you need your part quickly? You're in luck! We have warehouses all over the country to ensure a quick and easy delivery time. Most of our parts ship from our warehouses the same day you place your order. And many times, orders are delivered in Two to Three days.

Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.

Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please call us toll free, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! Give us a call at 1-800-909-7060 and we would be pleased to help you.

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Product: Category: Brand: Head Title: #1 Injector Line for Case Cummins 4-390 with 3-Bolt Bosch Rotary Pump