RULLINE Injector Seal Installer Kit for Ford GM Subaru Engines — 34720 Teflon Tip Seal Tools, Pilot Cone & Sizer

The RULLINE 34720 Injector Seal Installer Kit is a complete tool set that lets you remove, size and install Teflon injector tip seals on Hitachi, Bosch, Continental and Delphi fuel injectors used in many Ford, GM and Subaru engines.

If you service direct or port fuel injectors, getting replacement Teflon seals seated correctly is essential to stop vacuum leaks, prevent injector movement and ensure reliable sealing at the cylinder head. This kit combines a pilot cone to start the seal, an installer tool to push the seal onto the injector tip and a sizer to compress the seal to the right outer diameter before installation. It’s built for the common single- and double-sealed injectors found across a wide range of Ford, GM and Subaru applications, including many modern GM engines from 2010 onward.

How does this kit make seal replacement easier?

The pilot cone centers and guides new seals onto the injector tip so you avoid tearing or misalignment. After the seal is started, the installer tool presses the seal down evenly while the sizer compresses it to factory-like dimensions for smooth insertion into the cylinder head bore.

• Pilot cone reduces seal damage during startup.
• Installer tool applies uniform pressure to seat the seal.
• Sizer ensures the outer diameter matches the cylinder head bore.
• Works with single- and double-sealed injectors from major OEM suppliers.

Which injectors and vehicles are compatible with this tool?

The RULLINE 34720 targets Hitachi, Bosch, Continental and Delphi-style injectors that use replaceable Teflon tip seals. It covers many GM engines (1.4L–6.2L families), plus a selection of Ford and Subaru systems—particularly common direct-injection and port-injection applications.

• Compatible with common OEM single and double seals.
• Covers GM engines from about 2010 and later: 1.4L, 1.5L, 2.0L, 2.4L, 2.5L, 3.0L, 3.6L, 4.3L, 5.3L, 6.2L.
• Fits many Ford ECO and direct-injection injectors.
• Works with select Subaru fuel injector designs.

What steps are involved when using the installer kit?

Start by removing the old seal and cleaning the injector tip. Use the pilot cone to start the new Teflon seal, then push the seal down with the installer until it sits on the injector tip. Finish by compressing the seal with the sizer to the specified outer diameter before inserting the injector into the cylinder head.

• Clean the injector tip and inspect for burrs or damage.
• Slide seal onto injector using the pilot cone.
• Use the installer tool to press seal into position.
• Compress to correct OD with the sizer tool prior to installation.

Is this kit durable and suitable for repeated shop use?

RULLINE designed the 34720 kit for repeated use in a workshop environment. The tools are built to withstand the pressures required to seat and size Teflon seals while maintaining alignment to reduce seal failures caused by improper installation.

• Sturdy construction for frequent professional use.
• Tools maintain alignment to prevent seal tearing.
• Reusable across multiple injector service jobs.
• Compact set fits in standard toolboxes or service kits.

Who is this product for? The RULLINE 34720 Injector Seal Installer Kit is intended for professional technicians, independent mechanics and experienced DIYers who routinely service fuel injectors on Ford, GM and Subaru vehicles. It suits anyone who wants consistent, damage-free seal replacements and repeatable results when working with Hitachi, Bosch, Continental and Delphi-style injectors.