How to Maintain a Water Pump on a 5.9L Diesel Engine on 2003 Dodge Ram 3500?

The water pump on a 5.9L diesel engine requires one to remove the battery, empty the cooling system, and to remove the drive belt and mounting bolts to service the water pump. Check the pump and replace in case of damage. Fit in a new O-ring, screw up bolts, fill up the cooling system, reconnect the battery and check leaks.

OEM 2003 Dodge Ram 3500 Water Pump

H2O Pump

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3 Water Pumps found

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2003 Dodge Ram 3500 Water Pump Part Number: 68461455AA
$279.85 MSRP: $411.00
You Save: $131.15 (32%)
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Product Specifications
- Other Name: Pump - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 68003402AB, 5086959AB, 5010964AB, 68003402AA, R8003402AB, 5086959AA, 5003665AB, R5086959AB, R8003402AA
- Item Weight: 5.80 Pounds
- Item Dimensions: 4.6 x 6.0 x 6.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 68461455AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
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Fits the following 2003 Dodge Ram 3500 Submodels:
- Base, Laramie, SLT, ST, SXT, Sport, TRX4 | 5.9L L6, 6 Cyl 5.9 L DIESEL, 6 Cyl 6.7 L DIESEL
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2003 Dodge Ram 3500 Water Pump Part Number: 68382494AA
$421.36 MSRP: $614.00
You Save: $192.64 (32%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump - Water; Engine Water Pump Assembly; Engine Water Pump; Water Pump Assembly
- Replaces: 53021380AM, 53021380AK, 53021380AL, 53021380BB
- Item Weight: 10.80 Pounds
- Item Dimensions: 8.8 x 9.9 x 17.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 68382494AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
More Info
Fits the following 2003 Dodge Ram 3500 Submodels:
- Laramie, SLT, ST, SXT, Sport | 8 Cyl 5.7 L GAS
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2003 Dodge Ram 3500 Water Pump Part Number: 53021844AA
Product Specifications
- Other Name: Pump - Water; Engine Water Pump; Pump Water
- Item Weight: 6.50 Pounds
- Item Dimensions: 18.4 x 8.4 x 6.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 53021844AA
- Warranty: This genuine part is guaranteed by Mopar's factory warranty.
More Info
Fits the following 2003 Dodge Ram 3500 Submodels:
- Laramie, SLT, ST | 10 Cyl 8.0 L GAS

2003 Dodge Ram 3500 Water Pump Parts and Q&A

Q: How to Maintain a Water Pump on a 5.9L Diesel Engine on 2003 Dodge Ram 3500?
A: The water pump on a 5.9L diesel engine requires one to remove the battery, empty the cooling system, and to remove the drive belt and mounting bolts to service the water pump. Check the pump and replace in case of damage. Fit in a new O-ring, screw up bolts, fill up the cooling system, reconnect the battery and check leaks.