891827-403 Diesel Injection Repair Kit for T402742-series

The 891827-403 is a Rayfuel aftermarket diesel injection repair kit for selected T402742-series applications. It is supplied for workshop repair after the original component reference and the contents of the photographed kit have been compared with the unit being serviced.

Part-number and component check

Use 891827-403 as the primary ordering reference. T402742 is provided as an application reference, but similar pumps or injectors can use different seals and small internal parts. Check the marking on the original unit and compare the number, position, shape, and size of every visible component in the listing photographs before placing the order.

What is supplied

The listing is for one repair kit. Only the service parts shown in the product images are supplied. Depending on the photographed set, the kit may contain O-rings, sealing rings, gaskets, washers, springs, pins, plugs, screws, or other small workshop components. A complete injector, injection pump, housing, tool, or test fixture that appears beside the parts for reference is not included unless the listing clearly identifies it as a supplied component.

Inspection before assembly

Keep the removed parts arranged in their original order and compare them with the new pieces before installation. Confirm seal diameters, washer thicknesses, spring lengths, grooves, threads, and contact surfaces. Do not substitute a piece that differs from the original. A repair kit cannot correct damage to a pump housing, injector body, control valve, plunger, nozzle, electrical component, or worn mating surface; those parts should be inspected separately.

Clean installation matters

Open the kit only in a clean diesel-service area after the unit and tools have been prepared. Prevent dust, fibres, metal particles, and moisture from reaching precision surfaces. Assembly, tightening, calibration, leak checks, and functional testing should follow the service information for the exact fuel-system version. Installation by a qualified diesel fuel-system technician with appropriate test equipment is recommended.

Fitment help

When the original number is unclear, send clear photographs of the complete unit, its identification plate or stamped number, the connector and working end, together with the engine or equipment model. Rayfuel can compare those details with this listing before shipment. Use the Rayfuel contact page and mention 891827-403 so the request can be matched to the correct kit.