Real-world 2026 field data on diesel fuel injector failure patterns, hidden failure modes, and OEM vs aftermarket cost comparison for repair shops and fleet operators.
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Keep Your Cummins Diesel Running Without Interruption
A weak or failing fuel transfer pump starves your injection system — leading to hard starts, power loss, and costly downtime. This direct-fit Fuel Transfer Lift Pump (Part# 4935007 / 3944386) restores reliable low-pressure fuel delivery to your Cummins 8.3L diesel engine, right out of the box.
Fits:
- Cummins 8.3L ISC
- Cummins 8.3L ISL
- Cummins 8.3L QSL
- Cummins 8.3L QSC
- 12V systems
Why Choose This Pump?
- ✅ Dual OEM part number match — replaces both 4935007 and 3944386 for guaranteed fitment
- ✅ Consistent low-pressure fuel supply — keeps your injection pump primed and performing under heavy load
- ✅ Built for commercial & industrial demands — engineered to handle continuous cycling, pressure variation, and high-load operation
- ✅ Direct drop-in replacement — no modifications, no adapters; installs like the original
- ✅ 100% new, aftermarket quality — not remanufactured or refurbished
Specs:
- Condition: 100% New
- Type: Aftermarket
- Voltage: 12V
- Part Numbers: 4935007 / 3944386
- Application: Cummins 8.3L ISC, ISL, QSL, QSC
Whether you're running a commercial truck, generator, or industrial equipment powered by a Cummins 8.3L, this pump delivers the fuel system reliability your engine depends on. Order with confidence — exact fitment, no guesswork.
Fuel Parts Depot
New Fuel Transfer Pump 4935007 3944386 5362271 Fit for Cummins 8.3L ISC ISL QSL QSC 12V
SKU
4935007
- Regular price
- $288.00
- Regular price
- $288.00
Keep Your Cummins Diesel Running Without Interruption
A weak or failing fuel transfer pump starves your injection system — leading to hard starts, power loss, and costly downtime. This direct-fit Fuel Transfer Lift Pump (Part# 4935007 / 3944386) restores reliable low-pressure fuel delivery to your Cummins 8.3L diesel engine, right out of the box.
Fits:
- Cummins 8.3L ISC
- Cummins 8.3L ISL
- Cummins 8.3L QSL
- Cummins 8.3L QSC
- 12V systems
Why Choose This Pump?
- ✅ Dual OEM part number match — replaces both 4935007 and 3944386 for guaranteed fitment
- ✅ Consistent low-pressure fuel supply — keeps your injection pump primed and performing under heavy load
- ✅ Built for commercial & industrial demands — engineered to handle continuous cycling, pressure variation, and high-load operation
- ✅ Direct drop-in replacement — no modifications, no adapters; installs like the original
- ✅ 100% new, aftermarket quality — not remanufactured or refurbished
Specs:
- Condition: 100% New
- Type: Aftermarket
- Voltage: 12V
- Part Numbers: 4935007 / 3944386
- Application: Cummins 8.3L ISC, ISL, QSL, QSC
Whether you're running a commercial truck, generator, or industrial equipment powered by a Cummins 8.3L, this pump delivers the fuel system reliability your engine depends on. Order with confidence — exact fitment, no guesswork.
We offer 12-month warranty against defects in materials or workmanship.
All parts listed on Fuel Parts Depot are aftermarket replacement parts manufactured by independent suppliers. They are not genuine OEM (Original Equipment Manufacturer) parts and are not made by, affiliated with, or endorsed by the original equipment manufacturers, including but not limited to Perkins, Isuzu, Kubota, Yanmar, Caterpillar (CAT), Cummins, JCB, or any other brand referenced on this site. Brand names and model references are used solely for compatibility identification purposes. Our aftermarket parts are designed and tested to meet or exceed OEM specifications.
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Vendor: Fuel Parts Depot
Transfer Fuel Pump VOE21511352 for Volvo Penta TD420VE TAD620VE EC140B EC210B BL70B SD110
Regular price $173.00 -
Vendor: Fuel Parts Depot
24V Electric Fuel Transfer Pump 4937766 3968190 for Cummins QSL9 QSC8.3 ISLe ISDe QSB5.9 Engine
Regular price $145.00 -
Vendor: Fuel Parts Depot
Fuel Transfer Pump 0R-3008 0R3008 for Caterpillar CAT 3406B 3406C Engine 824C 980F D8N D400E 627E
Regular price $206.00 -
Vendor: Fuel Parts Depot
Fuel Transfer Pump 02112673 04503573 02113800 for Deutz BFM1013 BF4M2012 BF6M2012 BF6M1013 Engine
Regular price $109.00 -
Vendor: Fuel Parts Depot
Fuel Transfer Pump 1W-0568 1W0568 Fit for Caterpillar CAT Engine 3204 Excavator 215 215B E180 EL180
Regular price $286.00
Fitment Information
Compatibility
| Year | Make | Model | Engine |
|---|---|---|---|
| — | Cummins | — | Cummins Engines 8.3L, ISC, ISL, QSL, QSC, 6CT8.3 |
Part Numbers
4935007, 3944386, 5362271
Features
- 100% new Aftermarket
- Direct Fit No Modification
- Consistent Fuel Delivery
- Ready for Installation
Our Guarantee
12 Month Warranty
30-Day Returns
Fitment Guaranteed
What's Included
1 Pc 12V Fuel Transfer Pump
Complementary products
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