Replacement O-Rings Ford DR3Z8566A, 2x BC3Z-8590-F, & Reservoir hose w/grease
--- REPLACE ALL FOUR O-RINGS WHILE COOLANT IS DRAINED ---
- Quantity (1) smaller O-ring used in the coolant reservoir expansion tank hose quick connector.
- Quantity (1) small O-ring used in the Ford part number DR3Z8566A T-CONNECTOR
- Quantity (2) larger O-rings used on upper and lower radiator hose quick connectors. Replaces Ford part number BC3Z-8590-F
The O-rings will arrive pre-greased with silicone O-ring grease which is required for installation.
The coolant quick connectors that Ford used on vehicles such as the F-150 are notorious for developing leaks over time, especially in cold weather.
The F-150 3.5L EcoBoost and 5.0 V8 with expansion tank part number BL3Z-8A080-B have hoses that use the smaller O-ring included in this kit. Hose part number is BL3Z8C350A on 5.0 V8.
The upper and lower radiator hoses on many F-150s use part number BC3Z-8590-F which is available from Ford Parts. Two are included in this kit.
There is a smaller quick connector on the coolant T-connector that joins the upper radiator hose with the thermostat and water pump. The T-connector is part number DR3Z8566A. It contains an O-ring that is replaceable, but not available from Ford Parts; it is included in this kit.