How to service and repair the radiator on 2003 Toyota Highlander?

Service and repair work on the radiator begins when all coolant is drained first. The first step requires uninstalling the radiator hose inlet and outlet before proceeding with the oil cooler inlet and outlet hoses removal. Detach the radiator assembly through the removal of the two upper support bolts. Next pull out the lower radiator support and the fan assembly combined with motor after unscrewing all 6 mounting bolts which secure the fan motor unit. Add coolant before conducting a check for engine coolant leak detections.

OEM 2003 Toyota Highlander Radiator

Cooling Radiator

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2003 Toyota Highlander Radiator Assembly
Part Number: 16410-AZ027
$147.69 MSRP: $208.74
You Save: $61.05 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Radiator Assembly, L/Cap; Radiator
- Replaces: 16410-YZZAM
- Item Weight: 8.60 Pounds
- Item Dimensions: 36.4 x 27.3 x 7.3 inches
- Condition: New
- SKU: 16410-AZ027
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2003 Toyota Highlander Submodels:
- Base, Limited, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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2003 Toyota Highlander Radiator Assembly
Part Number: 16400-28240
$359.51 MSRP: $526.87
You Save: $167.36 (32%)
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Product Specifications
- Other Name: Radiator
- Manufacturer Note: TYPE A:REFER TO ILLUSTRATION
- Part Name Code: 16400
- Item Weight: 14.90 Pounds
- Item Dimensions: 35.2 x 26.8 x 8.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 16400-28240
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
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Fits the following 2003 Toyota Highlander Submodels:
- Base | 4 Cyl 2.4 L GAS
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2003 Toyota Highlander Radiator Assembly
Part Number: 16410-AZ026
$147.04 MSRP: $207.82
You Save: $60.78 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Radiator Assembly, L/Cap; Radiator
- Replaces: 16410-YZZAL
- Item Weight: 13.30 Pounds
- Item Dimensions: 34.7 x 26.3 x 5.2 inches
- Condition: New
- SKU: 16410-AZ026
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Highlander Submodels:
- Base, Limited, Sport | 6 Cyl 3.0 L GAS, 6 Cyl 3.3 L GAS
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2003 Toyota Highlander Radiator Assembly
Part Number: 16410-AZ047
$133.69 MSRP: $188.95
You Save: $55.26 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Radiator Assembly, L/Cap; Radiator
- Condition: New
- SKU: 16410-AZ047
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
Fits the following 2003 Toyota Highlander Submodels:
- Base | 4 Cyl 2.4 L GAS
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2003 Toyota Highlander Radiator Assembly
Part Number: 16400-28260
$397.24 MSRP: $582.16
You Save: $184.92 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Radiator
- Manufacturer Note: TYPE B:REFER TO ILLUSTRATION
- Part Name Code: 16400
- Item Weight: 8.20 Pounds
- Item Dimensions: 33.3 x 27.6 x 7.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 16400-28260
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Highlander Submodels:
- Base | 4 Cyl 2.4 L GAS

2003 Toyota Highlander Radiator

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2003 Toyota Highlander Parts Questions & Experts Answers

Q: How to service and repair the radiator on 2003 Toyota Highlander?
A: Service and repair work on the radiator begins when all coolant is drained first. The first step requires uninstalling the radiator hose inlet and outlet before proceeding with the oil cooler inlet and outlet hoses removal. Detach the radiator assembly through the removal of the two upper support bolts. Next pull out the lower radiator support and the fan assembly combined with motor after unscrewing all 6 mounting bolts which secure the fan motor unit. Add coolant before conducting a check for engine coolant leak detections.