Carquest Standard Thermostat: With Seal, 203 Degrees, 15112
In stock
$19.99
Listed as compatible with this vehicle by the retailer feed.
Check price2003 Infiniti FX45 Thermostats
4 products listed as compatible with this vehicle by the retailer feed.
Carquest Engine Coolant Water Inlet, 85421
In stock
$23.49
Listed as compatible with this vehicle by the retailer feed.
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Dorman Coolant Housing/Water Outlet: with Housing, 30 Degree Neck Angle, 902-5900
In stock
$24.49
Listed as compatible with this vehicle by the retailer feed.
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Carquest Engine Coolant Water Outlet, CH6900
In stock
$24.99
Listed as compatible with this vehicle by the retailer feed.
Check price
This site contains affiliate links. We may earn a commission if you buy through them. We do not sell these products or guarantee merchant inventory. Compatibility is listed by the retailer feed for this vehicle; it is not an OEM confirmation. Catalog snapshot: Aug 15, 2026.