Ford Bronco Engine Oil Cooler Diagram - Hoses 8N039/8B451, Torque Specs
Reference · 1978-1979 BroncoAll 79 exploded parts diagrams
Exploded and routing diagram of an engine oil cooler, bracket, inlet and outlet hoses and oil filter adapter with installation torque note.
Part of 1978-1979 Ford Bronco Exploded Parts Diagrams
This document is an exploded parts illustration showing the installation of an engine oil cooler assembly on a Ford truck, uploaded to a 1978 Ford Bronco gallery. The diagram shows the oil cooler and bracket assembly mounted between the upper radiator support and lower radiator support, with an arrow indicating the front of the engine. Two hoses connect the cooler to the oil filter adapter on the engine: the oil cooler inlet hose (part number 8N039) and the oil cooler outlet hose (part number 8B451). A callout instructs the installer to match and align the color codes on both hoses to ensure correct routing. An important service note states that use of a second (back-up) wrench is mandatory on the adapter fitting during hose removal and installation, and specifies a tightening torque of 48-61 N·m (35-45 ft-lb) for both hoses. From this document a reader can learn the mounting location of the oil cooler, the hose part number basics (Ford base numbers 8N039 and 8B451), the correct hose orientation via color codes, and the required torque and wrenching procedure for the adapter fittings.
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Frequently asked questions
- What is the torque spec for the oil cooler hose fittings?
- Tighten both hoses to 48-61 N·m (35-45 ft-lb), and use of a second (back-up) wrench is mandatory on the adapter fitting during hose removal and installation.
- What are the part numbers for the oil cooler hoses?
- The oil cooler inlet hose is 8N039 and the oil cooler outlet hose is 8B451.
- How do I make sure the oil cooler hoses are routed correctly?
- The diagram instructs to match and align the color codes on both hoses.
- Where does the oil cooler mount?
- The oil cooler and bracket assembly mounts between the upper radiator support and lower radiator support, with hoses running back to the oil filter adapter on the engine.
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