How to service and repair the heater core on 2003 Toyota Tacoma?

To service the heater core, remove the heater unit and radiator by taking out 5 screws, 2 plates, and a clamp. Disconnect the radiator pipes by removing 2 screws and clips. During reassembly, do not reuse the 2 O-rings. Follow the reverse order for installation.

OEM 2003 Toyota Tacoma Heater Core

HVAC Heater Core

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2003 Toyota Tacoma Heater Core
Part Number: 87107-35100
$345.82 MSRP: $506.81
You Save: $160.99 (32%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Unit Sub-Assembly, Radiator; HVAC Heater Core; Unit Sub-Assembly, Heater Radiator
- Part Name Code: 87107A
- Item Weight: 4.60 Pounds
- Item Dimensions: 20.9 x 9.6 x 16.9 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 87107-35100
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Tacoma Submodels:
- Base, Pre Runner, S-Runner | 4 Cyl 2.4 L GAS, 4 Cyl 2.7 L GAS, 6 Cyl 3.4 L GAS
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2003 Toyota Tacoma Heater Core
Part Number: 87107-0C010
$356.38 MSRP: $522.28
You Save: $165.90 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Unit Sub-Assembly, Radiator; HVAC Heater Core; Unit Sub-Assembly, Heater Radiator
- Part Name Code: 87107
- Item Weight: 2.50 Pounds
- Item Dimensions: 13.6 x 11.6 x 8.7 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 87107-0C010
- Warranty: This genuine part is guaranteed by Toyota's factory warranty.
More Info
Fits the following 2003 Toyota Tacoma Submodels:
- Base, Pre Runner, S-Runner | 4 Cyl 2.4 L GAS, 4 Cyl 2.7 L GAS, 6 Cyl 3.4 L GAS

2003 Toyota Tacoma Heater Core

Looking for affordable OEM 2003 Toyota Tacoma Heater Core? Explore our comprehensive catalogue of genuine 2003 Toyota Tacoma Heater Core. All our parts are covered by the manufacturer's warranty. Plus, our straightforward return policy and speedy delivery service ensure an unparalleled shopping experience. We look forward to your visit!

2003 Toyota Tacoma Heater Core Parts Q&A

Q: How to service and repair the heater core on 2003 Toyota Tacoma?
A: To service the heater core, remove the heater unit and radiator by taking out 5 screws, 2 plates, and a clamp. Disconnect the radiator pipes by removing 2 screws and clips. During reassembly, do not reuse the 2 O-rings. Follow the reverse order for installation.

Related 2003 Toyota Tacoma Parts

Alternate Year Models

2002 Toyota Tacoma Heater Core 2004 Toyota Tacoma Heater Core