A thermostat for a 2002 Honda Civic typically costs between about $10 and $70 for the part itself; if you have it installed by a shop, total costs commonly fall in the $150–$250 range depending on location and what else is involved.
What affects the thermostat price
Prices vary by part type, brand, and retailer. Here is a quick guide to what you’ll likely encounter when shopping for a Civic thermostat.
- Aftermarket thermostat (non-OEM): typically $10–$30, with some premium brands up to about $40.
- OEM Honda thermostat (genuine part): typically $40–$70.
- Thermostat with housing kit (includes mounting hardware and gasket): $25–$95.
- Used or salvage-yard thermostat: $5–$25.
- Thermostat kit (thermostat plus gasket and sometimes a new hose): $15–$45.
Prices can vary by region and retailer; always verify compatibility with your Civic’s exact engine variant and year before purchasing.
Where to buy and how to choose
Shop options and what to look for when selecting a thermostat for a 2002 Civic.
- Local auto parts chains (AutoZone, Advance Auto Parts, O'Reilly): part prices commonly fall in the $15–$60 range, with in-store pickup and returns.
- Online retailers (RockAuto, Amazon, eBay Motors): often the widest selection; prices typically $10–$70 with varying shipping times.
- Salvage yards and used-parts sellers: bargain options usually $5–$25; check part condition and any offered warranty.
- Compatibility checks: ensure the part matches the Civic’s engine code (typically 1.7L D-series for many 2002 Civics) and year; compare the OEM part number and note whether the kit includes a gasket or housing.
When buying, consider warranty, return policy, and whether the kit includes a new gasket or housing. If buying used, inspect the thermostat for corrosion and ensure it looks intact.
Installation considerations
Replacing a thermostat can be a DIY project for many hobby mechanics, but it requires careful coolant handling and proper reassembly. Here are general steps to guide a typical replacement.
- Cool the engine completely, then disconnect the negative battery terminal and drain the coolant from the radiator.
- Locate the thermostat housing on the engine block or water outlet. Remove the housing bolts and detach the housing to access the thermostat.
- Remove the old thermostat, clean the mating surfaces, and install the new thermostat in the correct orientation with the gasket in place.
- Reattach the housing, refill the cooling system, and bleed air from the cooling system as needed until the level stabilizes.
- Start the engine, check for leaks, and monitor the temperature gauge to ensure the thermostat opens at the expected temperature (typically around 180–195°F, depending on the unit).
DIY vs professional installation
Doing it yourself can save on labor, but if you’re not comfortable with coolant systems or if you notice leaks during testing, a professional mechanic can ensure proper bleeding and coolant stability.
Summary
For a 2002 Honda Civic, expect the thermostat part itself to cost roughly $10–$70, with OEM parts at the higher end. Completed installations at a shop commonly run about $150–$250 overall. Shopping around—considering aftermarket, OEM, and used options—while confirming engine compatibility will help you land the best price. If you choose to DIY, follow proper coolant handling and bleeding procedures to avoid overheating or air locks, and consult your vehicle’s service manual or a trusted guide for model-specific details.