Cooling system O-ring Motorcraft RG571 F1VY8255A for Ford

Cooling System O-Ring Motorcraft RG571 F1VY8255A for Ford

Reliable Sealing of the Cooling System

The original Motorcraft RG571 O-ring (Ford part number F1VY-8255-A) is specifically designed to ensure maximum sealing of the cooling system components in Ford, Lincoln, and Mercury vehicle engines. This part is used at the junction of the thermostat housing or coolant outlet with the engine block. Using the genuine OEM part guarantees precise conformity to the geometric parameters of the fitting location, eliminating the risk of coolant leakage even under extreme temperature loads and high pressure within the system.

Material Quality and Durability

The gasket is made from high-quality heat-resistant rubber (EPDM), resistant to the aggressive chemical effects of modern coolants. The material retains its elasticity over a wide temperature range, does not dry out or crack over time, which is critically important for preventing engine overheating. Unlike non-original counterparts, the Motorcraft RG571 ring has a precisely calibrated cross-section, providing the necessary clamping force without deforming the mating plastic or metal housing parts.

Installation and Operation Recommendations

For proper operation of the unit, it is recommended to replace the seal each time the thermostat housing is removed or the thermostat itself is replaced. Before installation, thoroughly clean the mating surfaces of any old gasket residue and oxides. Installing the original F1VY8255A ring restores the factory characteristics of the cooling system and avoids costly engine repairs associated with sudden coolant loss. The product is supplied in individual sealed packaging, protecting the rubber from UV and ozone exposure during storage.

Technical Specifications

• Brand: Motorcraft

• Brand Registration Country: USA

• Product Group: Cooling System Parts

• Purpose: Sealing the coolant outlet and thermostat housing

• Condition: New

• Compatibility: Ford Crown Victoria (1992–2011), Ford Expedition (1997–2014), Ford F-150 (1997–2010), Ford Mustang (1996–2010), Lincoln Town Car (1991–2011), Lincoln Navigator (1998–2014), Mercury Grand Marquis (1992–2011) with 4.6L and 5.4L V8 engines

• Material: Rubber

• Color: Black

• Weight: 50 g

• Manufacturer Part Number: RG-571

• Ford OEM Number: F1VY-8255-A

• Catalog Number: 3342711

• Package Contents: O-ring — 1 pc., polyethylene packaging

• Seal Type: O-Ring

• Resistance to Media: Antifreeze, Ethylene Glycol, Water

• Operating Temperature: from -40°C to +150°C

• Part Type: Genuine OEM

• UPC: 031508271700

• Features: Heat resistance, high elasticity, precise fit in the pipe housing groove