HomeBelts and Cooling > Thermostat and HousingMotorad 7511-185 Engine Coolant Thermostat
Part #: 7511-185

Motorad 7511-185 Engine Coolant Thermostat

Fail-Safe
⚙️ 49 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$20.46Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
📦Fail-Safe
🚗Fitment: Buick, Chevrolet, Pontiac, and Saturn, Aura, G6, Impala, Lucerne, Malibu, Montana, Monte Carlo, Relay, Terraza, Uplander, and Vue
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Coolant Thermostat for Buick, Chevrolet, Pontiac, and Saturn

The Motorad Fail-Safe 7511-185 engine coolant thermostat is designed to maintain optimal engine temperature for a range of GM vehicles. Engineered to meet precise specifications, this thermostat ensures efficient coolant flow and temperature regulation for models like the Chevrolet Impala, Buick Lucerne, and Pontiac G6.

  • Sealing flange outside diameter: 1.72 inches
  • Includes a rubber gasket for a secure seal
  • Equipped with a jiggle pin weep hole for air bleeding
  • Bypass diameter of 1.09 inches and bypass length of 1.89 inches
  • Flange thickness of 0.05 inches
  • Thermostat opens at 185 degrees Fahrenheit
  • One rubber seal included for reliable sealing

Detailed Features of the Motorad Fail-Safe 7511-185 Thermostat

This engine coolant thermostat from Motorad’s Fail-Safe line is built to provide consistent temperature control by opening at 185°F, which helps prevent engine overheating and promotes efficient warm-up. The included rubber gasket ensures a tight seal between the thermostat housing and engine, reducing the risk of coolant leaks. The jiggle pin weep hole allows trapped air to escape, improving coolant circulation and system performance. With a bypass diameter of 1.09 inches and length of 1.89 inches, this thermostat supports proper coolant flow during engine warm-up phases. The flange thickness of 0.05 inches and sealing flange diameter of 1.72 inches are designed to fit precisely in compatible GM vehicles.

About the Motorad Fail-Safe Product Line

The Fail-Safe line by Motorad focuses on delivering dependable engine cooling components that meet or exceed OEM specifications. This product line emphasizes durability and precise fitment, ensuring that parts like the 7511-185 thermostat maintain engine temperature effectively under various operating conditions. The Fail-Safe series is engineered to provide reliable performance for GM vehicles, including Buick, Chevrolet, Pontiac, and Saturn models.

Common Applications and Issues Addressed

  • Maintains proper engine operating temperature for Buick Lucerne and Chevrolet Malibu
  • Prevents engine overheating in Pontiac G6 and Saturn Vue
  • Reduces coolant leaks with included rubber gasket seal
  • Improves coolant circulation by venting trapped air via jiggle pin weep hole
  • Supports efficient engine warm-up and temperature regulation in Chevrolet Impala and Buick Terraza

Installation Notes and Tips

Ensure the engine is cool before removing the old thermostat to avoid injury. Clean the thermostat housing surface thoroughly before installing the new Motorad 7511-185 thermostat to ensure a proper seal with the included rubber gasket. Verify the jiggle pin weep hole is unobstructed to allow air to escape during coolant system bleeding. This thermostat is compatible with specific Buick, Chevrolet, Pontiac, and Saturn models; confirm fitment before installation.

Quality Assurance and Warranty

Motorad’s Fail-Safe 7511-185 thermostat is manufactured to meet strict quality standards for durability and performance. The part includes one rubber seal to ensure leak-free operation. While specific warranty details are not provided, Motorad products typically adhere to industry standards for reliability and fitment in compatible GM vehicles.

BrandMotorad
Part Number7511-185
PositionFail-Safe
Sealing Flange Outside Diameter1.72
Gasket Or Seal IncludedYes
Jiggle Pin Weep HoleYes
Bypass Diameter1.09 in
Bypass Length1.89 in
Flange Thickness0.05 in
Gasket/Seal MaterialRubber
Gasket/Seal MaterialRubber
Installation Tool IncludedNo
Number Of Seals1
Temperature185 deg. f
Temperature (Degree)185

This part fits 49 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2011BuickLucerne3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2011ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2011ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010BuickLucerne3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010ChevroletMalibu3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010PontiacG63.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2010SaturnVue3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009BuickLucerne3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009ChevroletMalibu3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009ChevroletUplander3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009PontiacG63.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009PontiacG63.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009PontiacMontana3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2009SaturnVue3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008ChevroletMalibu3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008ChevroletUplander3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008PontiacG63.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008PontiacG63.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008PontiacMontana3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008SaturnAura3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2008SaturnVue3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007BuickTerraza3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletMalibu3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletMalibu3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletMonte Carlo3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007ChevroletUplander3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007PontiacG63.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007PontiacG63.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007PontiacMontana3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007SaturnAura3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2007SaturnRelay3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006BuickTerraza3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletImpala3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletImpala3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletMalibu3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletMonte Carlo3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletMonte Carlo3.5LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006ChevroletUplander3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006PontiacG63.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006PontiacMontana3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe
2006SaturnRelay3.9LV6N/A"The patented Fail-Safe (R) thermostat is the only thermostat on the market designed to lock in the open position, allowing coolant to continue to flow in the event of overheating."; Temperature 185F; Includes seal; OE Specified Temperature; Fail-Safe

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

7511-1857511197511185NIP7511-185SS185-1157

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.