Mahle 72218 Engine Coolant Outlet O-Ring

Engine Coolant Outlet O-Ring for Toyota and Lexus

The Mahle 72218 engine coolant outlet O-ring is a precision sealing component for cooling system service. Built to match the dimensional needs of the application, it helps maintain a secure seal at the coolant outlet where temperature and pressure changes can challenge older seals.

Compatible With Toyota 4Runner, Tacoma, FJ Cruiser, Tundra, Highlander, Camry, Sienna, Avalon, Solara, and Lexus RX and ES models across the listed years, this Mahle coolant outlet O-ring supports clean reassembly during thermostat and coolant outlet repairs. Mahle 72218 is also a direct reference point for technicians looking up OE-style sealing dimensions.

Key Features

• Engine coolant outlet O-ring for cooling system sealing service
• Inside diameter: 1.125 in.
• Outside diameter: 1.5 in.
• Cross section width: 0.125 in.
• Thickness: 0.125 in.
• Made by Mahle, a sealing brand used by OEMs and technicians worldwide
• This part cross-references FEL-PRO 423 and Ford 3C3Z 6626-AA for the same application.

Product Details

Mahle 72218 is an engine coolant outlet O-ring engineered around the listed dimensions for a proper seal at the coolant outlet connection. The compact 0.125-inch cross section and 1.125-inch inside diameter make it a precise fit for service work where the original seal has flattened, hardened, or begun to leak. For Toyota Camry, Toyota Sienna, Lexus ES300, and Lexus RX300 cooling system repairs, the correct O-ring size is critical to restoring sealing integrity after thermostat or outlet service.

Common Problems This Part Helps Address

• Coolant seepage at the engine coolant outlet
• Visible wetness or residue around the thermostat housing area
• Seal hardening from heat cycling and age
• Leak recurrence after coolant outlet service
• Loss of sealing at the coolant passage connection

Installation Notes and Tips

• Clean the sealing surface thoroughly before installation.
• Inspect the coolant outlet and mating surfaces for corrosion, pitting, or debris.
• Use the correct coolant and follow the vehicle service procedure for refill and bleeding.
• For Toyota 4Runner, Tacoma, and Camry applications, verify the seal seats evenly before reassembly.
• Replace the O-ring whenever the coolant outlet or thermostat seal is serviced.

Quality Assurance

Mahle gaskets and sealing products are trusted in OEM and technician service environments for consistent fit and sealing performance. Mahle 72218 is built to the stated dimensions for dependable coolant system sealing in the listed Toyota and Lexus applications.