The thermostat for an INFINITI Q50 generally costs between $15 and $150 for the part, with installation bringing the total to about $100 to $420 depending on labor rates and whether you buy OEM or aftermarket parts.
Prices reflect typical ranges observed across dealers and retailers in 2024–2025. The Q50 has used multiple engines over its production run (for example, 3.7L V6 and various turbo options), so part availability and price can vary by engine code and model year. Dealer parts are usually pricier than aftermarket equivalents, and some kits include gaskets or hoses that affect the overall cost.
What affects thermostat pricing for the Q50
Engine variants and part compatibility
Different Q50 engines require different thermostat parts or housings. Always confirm the exact part number for your VIN when shopping.
Before listing price ranges, note that the final price depends on whether you buy just the thermostat, a kit with gaskets, or a thermostat with a housing. Availability and compatibility can also influence cost.
Prices you can expect for the thermostat itself, by source and type:
- OEM Infiniti thermostat (single part, no housing): typically about $50–$120 depending on year and engine.
- Aftermarket/non-OEM thermostat: roughly $12–$40.
- Thermostat kit (thermostat plus gasket or O-rings): about $15–$60.
- Thermostat with housing assembly (if your vehicle requires a new housing): roughly $70–$150.
- Used or remanufactured thermostat: about $20–$60.
Note: Dealer prices tend to be higher, and compatibility depends on your Q50's engine code and VIN. Always verify the exact part number before ordering.
Conclusion: Part price is primarily driven by OEM vs aftermarket status and whether you buy a standalone thermostat, a kit, or a housing assembly.
Labor costs and total estimate
Labor costs depend on your location and shop, but typical estimates are:
- Labor time: about 1 to 2 hours for a straightforward thermostat replacement on a Q50.
- Shop labor rate: commonly $75 to $150 per hour depending on region and shop.
- Estimated installed cost (parts plus labor): roughly $100 to $420, depending on part choice and labor rate.
- Additional costs: coolant flush or bleeding, hoses replacement, or thermostat housing replacement can add $20–$100 to the bill.
Conclusion: If you replace only the thermostat and reuse hoses, expect the lower end of the range; if you need OEM parts or add-ons, or if your local labor rates are high, plan for higher totals.
Summary
In short, budgeting for a thermostat replacement on an Infiniti Q50 typically runs from roughly $100 to $420 installed, with most cases landing in the $150–$300 range depending on part type and local labor costs. Shop around for OEM vs aftermarket parts, and obtain written estimates that separate parts and labor. Confirm the correct part for your engine code and model year, and consider a coolant check or bleed as part of the service.