LAIKOU Injector Seal Installer Kit 8-Piece for Ford GM Subaru — Teflon Injector Seal Tools, Resizers & Stretchers

LAIKOU 34720 Injector Seal Installer Kit is an eight-piece professional toolset designed to replace Teflon fuel injector seals on many Hitachi, Bosch, Continental and Delphi injectors used by Ford, GM and Subaru engines.

This compact kit provides the specific pilot cones, seal pushers, stretchers and resizers required to remove old injector seals and seat new ones cleanly without damaging the delicate injector tip. Whether you are a home mechanic or a professional technician, LAIKOU engineered these tools to speed installation, reduce fumbling with tiny rings and produce a consistent fit so the injector seals compress correctly into the cylinder head.

Which vehicles and injector types are compatible with this kit?

The 34720 set targets many modern engines that use single and dual Teflon-style injector seals from Hitachi, Bosch, Continental and Delphi. It includes sizes that cover a broad range of Ford, GM and Subaru applications, including direct-injection Ford ECO units.

• GM: 2010+ engines — 1.4L, 1.5L, 2.0L, 2.4L, 2.5L, 3.0L, 3.6L, 4.3L, 5.3L, 6.2L
• GM (2010–2017): 2.0L, 2.5L, 3.6L, 5.3L, 6.2L models
• Subaru: 2014–2019 turbo 2.0L and 2.4L
• Ford: many injectors from 2011 onward including some ECOBoost and direct injection variants

How does the kit make seal replacement easier and safer?

Each tool in the set is purpose-built to guide a seal over the injector tip, preserve the seal profile and compress the ring back to its correct outer diameter for cylinder-head installation. Using the right pilot and resizer prevents nicks, twists or uneven compression that cause leaks.

• Pilot cone starts the seal squarely on the injector tip to avoid rolling.
• Seal pusher advances the ring without needing pliers or fingernails.
• Resizers set the exact OD so the seal seats smoothly into the head bore.
• Stretchers expand tight seals for easier placement over injector shoulders.

What tools are included in the #34720 case and when should each be used?

The kit contains eight numbered tools covering common seal diameters and installation steps from stretching to sizing. Match the tool size to the injector seal profile listed by the vehicle or measure the seal OD to pick the correct stretcher or resizer.

• #34630: Seal Pusher — advances seals over the cone and onto injector tip.
• #34640: Resizer .312 (Ford-specific)
• #34650: Resizer .310
• #34670 – #34710: Seal Stretchers (.160, .250, .330, .408, .430) for varying ring sizes

Can this kit prevent leaks and reduce rework after seal replacement?

When used correctly the LAIKOU tools ensure the seal seats squarely and returns to the correct OD, which helps achieve an even seal on assembly and reduces the chance of fuel or vacuum leaks that require rework. Proper sizing and installation are crucial — the kit reduces human error by providing repeatable, mechanical steps.

• Controlled stretching avoids tearing or thinning the Teflon rings.
• Resizing prevents oversized rings from binding or undersized rings from leaking.
• Consistent installation reduces diagnostic time and repeat repairs.

Who is this for: the LAIKOU 34720 Injector Seal Installer Kit is suited to DIY mechanics who perform injector service, mobile technicians who need a compact, multi-size solution, and shop professionals servicing Ford, GM and Subaru engines using Hitachi, Bosch, Continental and Delphi injectors. If you frequently replace injector seals or want to avoid damaged seals and installation frustration, this kit streamlines the job and improves first-time results.