Water Pump 3801708, 3045943RX, 3051408 Fits Cummins Engine 855 Big Cam IV
Water Pump 3801708, 3045943RX, 3051408 Fits Cummins Engine 855 Big Cam IV is backordered and will ship as soon as it is back in stock.
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Powering 10,000+ Commercial Fleets
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One Year Warranty
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Easy 60-day Return
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Expert support & Fitment Guarantee
Compatibility Information
| Part Number | 3801708 3045943RX 3051408 3045943 3024386 |
|---|---|
| Make | cummins |
| Model | 855 big cam iv, 300, 350, 400, fleet 300, ntc, formula 300, formula 350, formula 400, ntc45 |
Description
Description
Water Pump 3801708, 3045943RX, 3051408 — Fits Cummins Engine 855 Big Cam IV
This new aftermarket water pump is designed to efficiently circulate coolant in Cummins 855 Big Cam IV engines. It ensures optimal engine temperature control and comes as a single unit including gaskets for proper installation.
Part Details
- Condition: New, Aftermarket
- Quantity: 1
- Includes: Gaskets
Compatible Part Numbers
- 3801708
- 3045943RX
- 3051408
- 3045943
- 3024386
Compatible Engines
- Cummins 855 Big Cam IV
- 300
- 350
- 400
- Fleet 300
- NTC Formula 300
- 350
- 400
- NTC45
1 Year Warranty
1 Year Warranty
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Fast Delivery
Fast Delivery
Estimated delivery time 3-6 workdays
No Core Charge
No Core Charge
We don't have a core charge for any products.
About This Item
- Direct OEM replacement — verified cross-reference fitment for Water Pump 3801708, 3045943RX, 3051408 Fits Cummins Engine 855 Big Cam IV
- Precision-cast aluminum housing for long-service durability under continuous load
- High-flow impeller design delivers optimal coolant circulation, preventing overheating
- Pressure-tested to OEM specifications before shipment — zero-defect guarantee
- Drop-in replacement — no modifications, adapters, or re-engineering required
- Reinforced bearing seats extend service life beyond standard aftermarket alternatives
- Compatible with standard coolant types — no special fluids required
- Backed by a 1-year manufacturer warranty covering defects in materials and workmanship
Superior Cooling Efficiency
Our precision-engineered impeller delivers higher flow rates than OEM specifications, ensuring optimal cooling performance even under extreme operating conditions — ideal for high-cycle heavy equipment applications.
Built for Long-Service Durability
Constructed from premium cast aluminum with reinforced bearing housings, this pump withstands thousands of operating hours with minimal wear. Pressure-tested to 2.5× OEM spec before shipment — no surprises in the field.
Precision Fitment — Zero Modifications
Every pump is manufactured to exact OEM tolerances with zero-clearance mounting. Drop-in replacement — no adapters, no re-engineering, no downtime surprises.
How We Compare
| Specification | FAB Heavy Parts | OEM Original | Generic Aftermarket |
|---|---|---|---|
| Flow Rate | OEM+ (Higher Flow) | OEM Spec | Below OEM |
| Warranty | 1 Year | 1 Year | 90 Days or None |
| Fitment Accuracy | Exact OEM Tolerances | Exact OEM Tolerances | Approximate |
| Pressure Tested | ✓ Pre-shipment | ✓ Yes | ✗ Rarely |
| Price Tier | Mid-range | Premium | Budget |
Frequently Asked Questions
How do I confirm this fits my engine?
How difficult is installation?
What warranty is included?
What is your return policy?
How fast will my order ship?
Can I order in bulk for my fleet?
What Our Customers Say
"Exact fit, no modifications needed. Installed in under an hour and the engine runs cooler than ever."
"Better quality than the OEM part we replaced. Pump has been running strong for 6 months with zero issues."
"Fast shipping, well-packaged, and the fitment was spot-on. Will order again for our other units."
"Ordered 3 units for our fleet. All installed without issues. Great value compared to OEM pricing."
