How to replace the Hybrid Drive Water Pump (WATER PUMP ASSY) on 2004 Toyota Prius?

Start the Hybrid Drive Water Pump INSTALLATION (WATER PUMP ASSY 1NZ-FXE) by first removing the radiator support opening cover and engine under covers on both left and right sides. Proceed by draining the engine coolant so you can take off the fan and generator V belt and water pump pulley using Special Service Tool: 09960-10010 (09962-01000, 09963-00600) to remove its 3 bolts and retrieve the pulley. The next step consists of removing the water pump assembly after uninstalling the 3 bolts together with 2 nuts. During assembly install a new gasket before using the 3 bolts and 2 nuts to secure the water pump assembly while torquing it to 11 Nm (112 kgf-cm, 8.1 ft. lbs.). First install the water pump pulley with its 3 bolts and apply Special Service Tool: 09960-10010 (09962-01000, 09963-00600). Then tighten all bolts to 15 Nm (153 kgf-cm, 11 ft. lbs.). After installing the fan and generator V belt you must inspect the drive belt deflection as well as tension before adding engine coolant and checking for any signs of leakage. The final task includes putting back the engine under cover RH and engine under cover LH and radiator support opening cover.

OEM 2004 Toyota Prius Water Pump

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2004 Toyota Prius Water Pump
Part Number: 16100-29157-83
$54.19 MSRP: $75.43
You Save: $21.24 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly, Water; Engine Water Pump
- Replaces: 16100-29156-83, 16100-29156, 16100-29155, 16100-29155-83
- Item Weight: 1.60 Pounds
- Condition: New
- SKU: 16100-29157-83
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2004 Toyota Prius Submodels:
- Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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2004 Toyota Prius Motor Assembly
Part Number: G9020-47031
$162.93 MSRP: $230.63
You Save: $67.70 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly, Water W/M; Drive Motor Inverter Cooler; Engine Auxiliary; Electric; Engine Water Pump; Pump; Pump Assembly, Water W/Motor & Bracket
- Replaces: G9020-47030
- Part Name Code: 16290A
- Item Weight: 2.90 Pounds
- Item Dimensions: 7.4 x 7.3 x 7.2 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: G9020-47031
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2004 Toyota Prius Submodels:
- Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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2004 Toyota Prius Water Pump
Part Number: 16290-21011
$227.58 MSRP: $324.93
You Save: $97.35 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Pump Assembly, Water W/M; Electric Water Pump; Engine Water Pump; Pump; Pump Assembly, Water W/Motor & Bracket
- Replaces: 16290-21010
- Part Name Code: 16290C
- Item Weight: 6.60 Pounds
- Item Dimensions: 9.5 x 9.1 x 9.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 16290-21011
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2004 Toyota Prius Submodels:
- Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)
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2004 Toyota Prius Water Pump
Part Number: 87200-47030
$806.54 MSRP: $1181.99
You Save: $375.45 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Accessory Assembly, Heat; Electric Water Pump; Engine Water Pump; Pump Assembly; Pump Assembly, Water(For Heater)
- Part Name Code: 87200A
- Item Weight: 5.10 Pounds
- Item Dimensions: 11.4 x 8.3 x 5.3 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 87200-47030
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2004 Toyota Prius Submodels:
- Base, Touring | 4 Cyl 1.5 L FULL HYBRID EV-GAS (FHEV)

2004 Toyota Prius Water Pump

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2004 Toyota Prius Parts Questions & Experts Answers

Q: How to replace the Hybrid Drive Water Pump (WATER PUMP ASSY) on 2004 Toyota Prius?
A: Start the Hybrid Drive Water Pump INSTALLATION (WATER PUMP ASSY 1NZ-FXE) by first removing the radiator support opening cover and engine under covers on both left and right sides. Proceed by draining the engine coolant so you can take off the fan and generator V belt and water pump pulley using Special Service Tool: 09960-10010 (09962-01000, 09963-00600) to remove its 3 bolts and retrieve the pulley. The next step consists of removing the water pump assembly after uninstalling the 3 bolts together with 2 nuts. During assembly install a new gasket before using the 3 bolts and 2 nuts to secure the water pump assembly while torquing it to 11 Nm (112 kgf-cm, 8.1 ft. lbs.). First install the water pump pulley with its 3 bolts and apply Special Service Tool: 09960-10010 (09962-01000, 09963-00600). Then tighten all bolts to 15 Nm (153 kgf-cm, 11 ft. lbs.). After installing the fan and generator V belt you must inspect the drive belt deflection as well as tension before adding engine coolant and checking for any signs of leakage. The final task includes putting back the engine under cover RH and engine under cover LH and radiator support opening cover.