How to replace the water pump on 4.8L, 5.3L, and 6.0L engines on 2004 Chevrolet Express 3500?

To change the water pump of 4.8L, 5.3L, and 6.0L engines, drain the cooling system, take off the air cleaner assembly, fan clutch and accessory drive belt. Take off hose and water pump bolts and fit the new water pump with gaskets. Retighten hoses and reconnect parts, and fill cooling system.

OEM 2004 Chevrolet Express 3500 Water Pump

H2O Pump

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2004 Chevrolet Express 3500 Water Pump Part Number: 12703898
$187.62 MSRP: $364.18
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Product Specifications
- Other Name: Pump Kit-Water *Use Together With Gask; Pump Kit, Engine Coolant
- Replaces: 12681184, 12686763, 19256261
- Item Weight: 11.50 Pounds
- Item Dimensions: 21.5 x 16.1 x 9.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12703898
- Warranty: This genuine part is guaranteed by GM's factory warranty.
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Fits the following 2004 Chevrolet Express 3500 Submodels:
- Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS
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2004 Chevrolet Express 3500 Water Pump Part Number: 89018166
Product Specifications
- Other Name: Pump Kit, Water; Water Pump Assembly
- Replaces: 12458935, 12456113, 88894290, 89017439, 89018040
- Item Weight: 14.60 Pounds
- Item Dimensions: 20.8 x 13.6 x 8.7 inches
- Condition: New
- SKU: 89018166
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Chevrolet Express 3500 Submodels:
- Base, LS, LT | 8 Cyl 4.8 L GAS, 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS

2004 Chevrolet Express 3500 Water Pump

With a comprehensive array of OEM 2004 Chevrolet Express 3500 Water Pump, from fuel pumps to door handles, our website is a one-stop-shop for your needs. All our genuine 2004 Chevrolet Express 3500 Water Pump are backed by the manufacturer's warranty and are offered at competitive prices in the market. Rest assured, you can shop with complete confidence.

2004 Chevrolet Express 3500 Water Pump Parts and Q&A

Q: How to replace the water pump on 4.8L, 5.3L, and 6.0L engines on 2004 Chevrolet Express 3500?
A: To change the water pump of 4.8L, 5.3L, and 6.0L engines, drain the cooling system, take off the air cleaner assembly, fan clutch and accessory drive belt. Take off hose and water pump bolts and fit the new water pump with gaskets. Retighten hoses and reconnect parts, and fill cooling system.