RULLINE Injector Seal Installer Kit 8-Piece for Ford GM Subaru — Teflon Seal Sizer & Driver

The RULLINE 34720 Injector Seal Installer Kit is an eight-piece tool set that installs and sizes injector Teflon seals for Hitachi, Bosch, Continental and Delphi single- and double-sealed fuel injectors used in many Ford, GM and Subaru engines.

This kit bundles a pilot cone, an installer driver and sizing tools designed to make replacing injector seals faster, cleaner and consistently accurate. It’s built to work with common OEM-style injectors — including Ford ECO and numerous GM direct-injection applications — so technicians and DIYers can avoid damaged seals or improperly seated components when servicing fuel injectors. Tools are machined to engage the seal and compress it to the right outer diameter before seating it into the cylinder head.

Which injectors and vehicles does this kit fit?

The RULLINE 34720 kit is compatible with Hitachi, Bosch, Continental and Delphi single- and double-sealed injectors found in many Ford, GM and Subaru engines. It covers a wide range of GM engines from about 2010 onward and supports common Ford ECO and certain Subaru applications.

• Works with OEM-style Hitachi/Bosch/Continental/Delphi injectors
• Compatible with Ford ECO and many direct-injection tips
• Supports GM engines such as 1.4L, 1.5L, 2.0L, 2.4L, 2.5L, 3.0L, 3.6L, 4.3L, 5.3L, 6.2L
• Suitable for common single- and double-seal Teflon replacement jobs

How does the kit ensure seals seat correctly?

The set includes a pilot cone to guide the seal onto the injector tip, an installer driver to push the seal squarely into place, and a sizer tool that compresses the seal to the correct outer diameter. Using the sizer prevents over-compression or uneven seating that can cause leaks or premature wear.

• Pilot cone centers the seal for damage-free starts
• Installer driver applies straight, controlled force to seat the seal
• Sizer confirms the outer diameter for proper cylinder-head fit
• Reduces need for repeated rework or replacements

What problems does this toolset solve during injector service?

Replacing injector Teflon seals by hand risks nicking, twisting or mis-sizing the seal, which leads to leaks or fuel smell. This kit removes guesswork by guiding and compressing the seal consistently, saving time and minimizing the chance of installation damage.

• Prevents seal twisting and edge damage
• Ensures consistent compression for leak-free seating
• Makes multi-cylinder jobs faster and repeatable
• Reduces scrap of expensive injector seals

Are these tools durable and easy to use for a home mechanic?

RULLINE tools are machined for repeatable alignment and dependable performance in shop or home environments. The pieces fit together intuitively and require only common hand force or a small press to install seals correctly, so the learning curve is short for anyone familiar with injector removal and service.

• Machined components for repeatable fit and long life
• Simple assembly — pilot, driver, sizer workflow
• usable with a bench press or steady hand pressure
• Compact kit that stores easily in a toolbox

Who is this for: The RULLINE 34720 Injector Seal Installer Kit is aimed at automotive technicians, engine rebuilders, and experienced DIYers who service fuel injectors on Ford, GM and Subaru engines. If you replace Teflon injector seals regularly or want to ensure clean, repeatable installs without damaging seals, this kit gives the alignment, compression control and coverage needed for professional-looking results.