How to service the water pump on a 3.8L engine on 2003 Ford Mustang?

A 3.8L engine water pump maintenance requires draining engine coolant as the starting step. Proceed with this repair by first removing the Power Steering (PS) pump pulley followed by its bolts and coolant pump pulley then finally the bolts that hold the coolant pump pulley. The PS bracket removal requires you to remove its bolts and nuts before separating it from the setup. The lower radiator hose detachment from the coolant pump must occur before the coolant heater outlet tube assembly can be set aside after unbolt its component. First remove the coolant pump through the removal of its stud as well as four bolts and four nuts. Determine the condition of gasket sealing surfaces while performing necessary cleaning before putting in a replacement gasket. The installation requires reversing the previous removal process while you tighten the coolant pump stud as well as bolts and nuts in their correct order. The completion of cooling system filling and bleeding operations marks the last step within this process.

OEM 2003 Ford Mustang Water Pump

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2003 Ford Mustang Water Pump
Part Number: 3L3Z-8501-CA
$51.84 MSRP: $83.64
You Save: $31.80 (39%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Manufacturer Note: With M30 Hub
- Replaced by: 5L3Z-8501-AC
- Replaces: 5R3Z-8501-A, 5L2Z-8501-A, 1L2Z-8501-BB, F7UZ-8501-CA, F8AZ-8501-AA, PW-470, PW-387, YW7Z-8501-AA, AR3Z-8501-A, F4AZ-8501-A, AL3Z-8501-B, PW-499, YR3Z-8501-AB, YC2Z-8501-BA, PW-466, XC2Z-8501-BA
- Base No.: 8501
- Item Weight: 5.60 Pounds
- Item Dimensions: 6.6 x 5.6 x 5.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 3L3Z-8501-CA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Ford Mustang Submodels:
- Bullitt, GT, GT Bullitt, Mach 1, Shelby GT, SVT Cobra, SVT Cobra 10th Anniversary | 8 Cyl 4.6 L GAS
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2003 Ford Mustang Water Pump
Part Number: 5W7Z-8501-AA
$76.18 MSRP: $122.91
You Save: $46.73 (39%)
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaced by: 9W7Z-8501-A
- Replaces: YW7Z-8501-BB
- Base No.: 8501
- Item Weight: 3.00 Pounds
- Item Dimensions: 5.8 x 5.6 x 5.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 5W7Z-8501-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Ford Mustang Submodels:
- GT, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 8 Cyl 4.6 L GAS
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2003 Ford Mustang Water Pump
Part Number: F8YZ-8501-AA
$336.19 MSRP: $558.22
You Save: $222.03 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Pump Assembly - Water; Engine Auxiliary Water Pump; Electric Water Pump; Engine Water Pump
- Base No.: 8501
- Item Weight: 3.00 Pounds
- Item Dimensions: 10.2 x 4.5 x 6.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: F8YZ-8501-AA
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Ford Mustang Submodels:
- GT, Mach 1, SVT Cobra, SVT Cobra 10th Anniversary | 8 Cyl 4.6 L GAS
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2003 Ford Mustang Water Pump
Part Number: 3R3Z-8501-A
$74.37 MSRP: $122.36
You Save: $47.99 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Pump Assembly - Water; Engine Water Pump; Water Pump Assembly
- Replaces: 4U7Z-8501-A, 4U7Z-8501-B, 3R3Z-8501-BB
- Base No.: 8501
- Item Weight: 6.10 Pounds
- Item Dimensions: 9.0 x 8.6 x 11.8 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 3R3Z-8501-A
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
More Info
Fits the following 2003 Ford Mustang Submodels:
- Base | 6 Cyl 3.8 L GAS, 6 Cyl 3.9 L GAS

2003 Ford Mustang Water Pump

If you're seeking quality and affordability, look no further than our extensive inventory of genuine 2003 Ford Mustang Water Pump available at FordPartsDeal.com. You can confidently purchase our OEM 2003 Ford Mustang Water Pump as they are supported by the manufacturer's warranty and our hassle-free return policy, alongside the benefit of our fast delivery service.

2003 Ford Mustang Water Pump Parts Questions & Experts Answers

Q: How to service the water pump on a 3.8L engine on 2003 Ford Mustang?
A: A 3.8L engine water pump maintenance requires draining engine coolant as the starting step. Proceed with this repair by first removing the Power Steering (PS) pump pulley followed by its bolts and coolant pump pulley then finally the bolts that hold the coolant pump pulley. The PS bracket removal requires you to remove its bolts and nuts before separating it from the setup. The lower radiator hose detachment from the coolant pump must occur before the coolant heater outlet tube assembly can be set aside after unbolt its component. First remove the coolant pump through the removal of its stud as well as four bolts and four nuts. Determine the condition of gasket sealing surfaces while performing necessary cleaning before putting in a replacement gasket. The installation requires reversing the previous removal process while you tighten the coolant pump stud as well as bolts and nuts in their correct order. The completion of cooling system filling and bleeding operations marks the last step within this process.