For a 2009 Dodge Ram 1500, thermostat replacement typically costs about $100 to $260 in total, depending on engine variant, part quality, and labor rates. Prices can vary by retailer and region as of 2024–2026.
Prices vary with engine type and source. The Ram 1500 offered several engines in 2009: 3.7L V6, 4.7L V8, and the 5.7L Hemi. The thermostat part isn't identical across engines; some units differ in temperature rating (180°F vs 195°F) and may come as a kit with gaskets and hoses or as a standalone unit. Always confirm compatibility for your exact motor and model.
Engine options and thermostat compatibility
Common temperature ratings
Most 2009 Ram engines use thermostats rated around 180°F to 195°F. The exact rating should match your engine code and the cooling system configuration. If you’re unsure, check the vehicle’s service manual or confirm with the parts retailer using your VIN.
Price ranges and what you get
Prices vary by source and whether you buy a simple thermostat or a complete kit that includes the gasket and hardware.
- Aftermarket thermostat only (no housing or gasket): typically $5–$15
- Thermostat with gasket or O-ring: typically $10–$25
- OEM Mopar thermostat kit (thermostat plus hardware and gasket): typically $40–$100
Concluding: When shopping, verify compatibility with your engine variant and confirm whether the kit includes gaskets, a new O-ring for any sensor if present, and the coolant-compatible seal. Prices vary by retailer and region.
Labor and installation considerations
Installation costs depend on location, shop rates, and whether cooling system coolant needs flushing or hoses replaced. Typical labor ranges are:
- Independent mechanic or shop: about $80–$150 for basic replacement
- Dealership or specialized shop: about $150–$250, sometimes higher
Concluding: Some shops offer a flat price for the thermostat replacement that includes parts and coolant flush, while others bill by the hour; always request a written estimate and check whether coolant disposal is included.
Where to buy and how to verify compatibility
To ensure you purchase the correct part for your 2009 Ram 1500, check your vehicle’s engine code (3.7L, 4.7L, or 5.7L) and refer to the parts catalog or owner’s manual. Reputable retailers offer compatibility filters; if in doubt, ask a parts counter for the exact Mopar part number or a validated equivalent that matches your engine’s specs.
- Auto parts stores (e.g., AutoZone, O'Reilly, Advance Auto Parts)
- Official Mopar or dealership parts departments
- Online retailers (RockAuto, Amazon, eBay Motors)
Concluding: Compare prices, shipping, and return policies, and confirm whether you’re buying the thermostat as a stand-alone part or as a kit with the necessary gaskets and hardware.
Summary
For a 2009 Dodge Ram 1500, budget roughly 100–260 total for a thermostat replacement, with parts typically ranging from about 5–100 depending on aftermarket versus OEM and kit inclusion. Labor adds to the total and varies by location and shop. Confirm your engine variant (3.7L, 4.7L, or 5.7L) to ensure you buy the correct thermostat, and shop around for the best price and warranty. Always verify fit before purchasing.


