This return line kit is made for Ford & International IDI 6.9L and early 7.3L diesel engines from 1983–1991 (the pre–Power Stroke 7.3L IDI engines). It does not fit later 7.3L Power Stroke engines.
The package includes 8 plastic caps/tees (for the injectors), 16 O-rings (to seal the tees to the injectors), 18 hose clamps (to secure hoses to the tees), and 8 copper washers (to seal the injectors into the head).
No. This is a return line kit only and does not include fuel injectors.
The item description does not list any return hoses. The kit supplies the tees, O-rings, clamps and copper washers; hoses are not included.
The seller lists part numbers 69120 and 7135-264 as identifiers for this return line kit.
Professional installation is highly recommended. No installation instructions are included, and correct installation (including proper sealing and torque procedures) is important for safe operation.
The product includes a 2-year warranty against manufacturing defects. For warranty claims or issues, contact the seller.
The kit is manufactured in China.
It's best practice to install the new copper washers and O-rings provided in the kit. Copper crush washers and fuel-system O-rings are typically intended to be replaced whenever the injector or fittings are disturbed to ensure a proper seal.
The tees and seals are intended to interface with standard injectors used on 6.9L/7.3L IDI engines. Compatibility with a specific aftermarket injector depends on that injector’s dimensions—confirm fitment with the injector manufacturer if unsure.
Signs you may need replacement include fuel leaks at the injector connections, cracked or brittle fittings, loose clamps, or degraded O-rings. Inspect these components during fuel system service or if you detect fuel odor or leaks.
Yes. The supplied O-rings and fittings are intended for use in diesel fuel return applications. If you have specific chemical compatibility concerns, contact the seller for material details.
Have a qualified technician install the kit. They should depressurize the fuel system, use new seals and copper washers from the kit, secure hoses with the provided clamps, and follow factory torque/spec guidance from a service manual. Do not overtighten fittings and check for leaks before starting the engine.
Contact the seller or the platform where you purchased the item immediately, describe the issue, and provide photos if possible. The seller’s warranty covers manufacturing defects for two years; follow their return/exchange process.
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