# MotoRad 7511-185 Fail Safe™ Series Thermostat for 2006-2011 Buick Lucerne ### Specifications Bypass Diameter: 1.09" Bypass Length: 1.89" Flange Thickness: 0.05" Gasket/Seal Material: Rubber Installation Tool Included: No Jiggle Pin Weep Hole: Yes Number Of Seals: 1 Sealing Flange Outside Diameter: 1.72" Temperature (Degree): 185F ### Features - Exclusive, patented design - High quality Stainless Steel and Copper construction - Locking technology prevents costly engine damage - 100% tested and calibrated - Manufactured with the highest quality materials from an OE supplier ### Product Details Fail Safe™ Series Thermostat (7511-185) by MotoRad®. Temperature: 185F. Fail-Safe Thermostats offer premium, patented technology for superior protection over any thermostat on the market. Only Fail-Safe is designed to lock in the open position when overheating occurs due to a failing cooling system component. This allows maximum coolant flow, thus preventing expensive engine damage. Fail-Safe is designed to help protect your engine when overheating occurs. When overheating occurs, Fail-Safe automatically locks in the open position to permit maximum coolant flow. When standard thermostats fail, they lock in the closed position and prevent coolant flow to the engine, which can possibly cause serious damage to your engine. Fail-Safe has a patented safeguard against overheating damage. Fail-Safe thermostats are designed with a unique extra stroke that allows operation in two stages: Stage 1: Within normal operating temperatures, the Fail-Safe operates the same as any other thermostat. Stage 2: When overheating is caused by a deteriorating cooling system part, the Fail-Safe has a secondary stroke that activates a precision engineered piston that automatically locks the valve into a wide open position allowing coolant to circulate freely. Don’t be stranded on the side of the road because your engine overheated and your conventional thermostat failed in the closed position keeping coolant from flowing to the engine. Buy the best Thermostat on the market, the Fail-Safe Thermostat from Motorad. Why is the Fail-Safe the best thermostat? Under normal operating temperatures, the Fail-Safe operates in the same manner as a conventional thermostat. However, when your vehicle overheats due to a deteriorating cooling system part, a standard thermostat locks in the closed position blocking the flow of coolant to the engine. Motorad’s patented Fail-Safe Thermostat is the only thermostat that automatically locks in the open position allowing coolant to circulate freely throughout the engine during the overheating process. This can protect your engine from a more costly repair. Once the Fail-Safe thermostat does its job of allowing coolant to continue to flow to the engine during an overheating by locking in the open position, you must replace it with a new one. There are standard thermostats, then there is the Motorad Fail-Safe Thermostat. Ask for MotoRad’s Fail-Safe Thermostat the next time you need a new thermostat. Brand: MotoRad Part Number: 7511-185 UPC: 055644751184 Alternate MPN: 7511185 ### Vehicle Fitment Table Year Make Model Position Fitment Precision Note 2009 Buick Lucerne 2010 Buick Lucerne 2011 Buick Lucerne 2006 Buick Terraza 2007 Buick Terraza 2006 Chevy Impala 2007 Chevy Impala 2008 Chevy Impala 2009 Chevy Impala 2010 Chevy Impala 2011 Chevy Impala 2006 Chevy Malibu 2007 Chevy Malibu 2008 Chevy Malibu 2009 Chevy Malibu 2010 Chevy Malibu 2006 Chevy Monte Carlo 2007 Chevy Monte Carlo 2006 Chevy Uplander 2007 Chevy Uplander 2008 Chevy Uplander 2009 Chevy Uplander 2006 Pontiac G6 2007 Pontiac G6 2008 Pontiac G6 2009 Pontiac G6 2010 Pontiac G6 2006 Pontiac Montana 2007 Pontiac Montana 2008 Pontiac Montana 2009 Pontiac Montana 2007 Saturn Aura 2008 Saturn Aura 2006 Saturn Relay 2007 Saturn Relay 2008 Saturn Vue 2009 Saturn Vue 2010 Saturn Vue ### FAQ **Will this fit my vehicle?** Please verify your year, make, model, position, and any fitment notes using the Vehicle Fitment Table above before purchase. **What part number is this?** The listed part number is 7511-185. **Is this product designed for direct replacement?** Yes. This product is intended to match the compatible vehicle applications listed in the fitment table. **Should I confirm fitment before ordering?** Yes. Always compare your original part, position, and vehicle details with the fitment table before ordering. ### Common Searches - Fail Safe™ Series Thermostat for Buick Lucerne - 7511-185 fitment - MotoRad Fail Safe™ Series Thermostat - 2009 Buick Lucerne Fail Safe™ Series Thermostat ## Details - **Price:** 32.34 CAD - **Vendor:** MotoRad - **Type:** Fail Safe™ Series Thermostat - **Tags:** 2006-2007 Buick Terraza, 2006-2007 Chevy Monte Carlo, 2006-2007 Saturn Relay, 2006-2009 Chevy Uplander, 2006-2009 Pontiac Montana, 2006-2010 Chevy Malibu, 2006-2010 Pontiac G6, 2006-2011 Chevy Impala, 2007-2008 Saturn Aura, 2008-2010 Saturn Vue, 2009-2011 Buick Lucerne, 7511-185, Automotive, Fail Safe™ Series Thermostat, MotoRad ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 32.34 CAD | In stock | ## Images - MotoRad 7511-185 Fail Safe™ Series Thermostat for 2006-2011 Buick Lucerne --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/motorad-7511-185-fail-safetm-series-thermostat) > Updated: 2026-08-17