> Canonical page: https://dieselfuelinjectionrepair.com/parts/high-pressure-oil-seal-kits/

> Summary: High-pressure oil systems supporting HEUI injection can use specialized rail, standpipe, port-plug and fitting seals.

DIESEL PARTS / SEALS, GASKETS AND REPAIR KITS

# High-Pressure Oil Seals & Rail Kits

Need seals or fittings for a high-pressure oil injection system? Match the rail, standpipe or connection design to your engine.

Have the exact assembly number and location of the leak or seal? We can help identify the gasket, O-ring or repair kit that fits your inquiry.

## Where these parts are used

High-pressure oil rails, standpipes and fittings vary across engines. The correct sealing kit depends on the precise connection.

## Match the Right Part to Your Equipment

Provide engine model, oil rail or fitting part number and observed leak or pressure-test results.

Identify the system being sealed, the assembly revision, and whether the required item is an individual gasket, O-ring, injector installation set or a broader service kit.

## Select the kit, not just a similar O-ring

Separate oil-circuit sealing decisions from diesel fuel supply or common-rail replacement parts.

Identify the full assembly and which joint is being serviced. Component revisions may change seals and kit contents; opening a pump or injector can require specialized test and calibration afterward.

## Part Names and Identification

Related descriptions include stand pipe plug, front port plug, oil rail o-ring seals. Match the original assembly and correct sealing components for your equipment.

## Need Help Finding This Part?

Have a part number or photo of the original component? Include it with the engine or equipment model and quantity you need. We'll help review matching options and availability.

[Ask Our Parts Team](/parts/find-a-part/)

Looking for a specific component? Explore products listed in our store, or ask us about something you don't see online.

[Visit the Diesel Parts Store](/store/)

## Related Parts and Resources

- [Browse related seals, gaskets and repair kits](/parts/seals-repair-kits/)
- [Get Help with a Part Number](/parts/find-a-part/)
- [Shop Diesel Parts](/store/)
- [Learn About This Fuel System](/fuel-injection/systems/heui-fuel-injection-systems/)