Yoursme Fuel Injector Seal Installer Kit 34720 — Ford, GM & Subaru Fit, Hardened Steel Case

The Yoursme 34720 Fuel Injector Seal Installer Kit is a complete tool set built to install and size Teflon injector seals for many Hitachi, Bosch, Continental and Delphi injectors used in Ford, GM and Subaru engines.

This professional-grade kit gathers purpose-made pushers, stretchers and resizers into a compact case so technicians and experienced DIYers can seat replacement injector O-rings and Teflon seals accurately and without damage. The set covers a broad range of modern engine applications — including many Ford ECO and GM engines from the 2010s — and includes clearly marked tools to speed identification during service. Constructed from hardened steel with a protective finish, the kit is made for repeated garage or shop use and includes an instruction guide to simplify each step.

How does this kit make replacing injector seals easier?

The kit organizes the operations needed to transfer a new seal from the spool to the injector tip safely and consistently. Instead of trying to force seals by hand, the pilot cones, seal pushers and resizers guide each seal into the correct groove and compress it to the right outer diameter.

• Pilot cone centers the seal on the injector tip to avoid twisting or tearing.
• Seal pusher drives the seal gently into place without marring the injector body.
• Resizers compress seals to the precise OD required for correct seating in the cylinder head.
• Marked tools reduce guesswork and speed up the service process.

Which engines and injectors does the 34720 kit support?

This kit was designed to work with many single- and double-sealed injectors from major manufacturers and with a range of Ford, GM and Subaru engines. It specifically lists compatibility with common GM displacements from 2010 onward, multiple Subaru turbo engines, and Ford injectors made in and after 2011, plus many Hitachi, Bosch, Continental and Delphi units.

• GM: many 2010+ 1.4L, 1.5L, 2.0L, 2.4L, 2.5L, 3.0L, 3.6L, 4.3L, 5.3L, 6.2L engines.
• GM (2010–2017): specific 2.0L, 2.5L, 3.6L, 5.3L, 6.2L fits.
• Subaru: 2014–2019 2.0L and 2.4L turbo engine coverage.
• Ford: many injectors from 2011 and newer including select ECO systems and direct-injection points.

What tools are included and how are they used safely?

The kit includes a set of specialized pieces for stretching, pushing and sizing seals, all stored in a labeled case. Follow the included instructions: start with the pilot cone, slide the seal, use the pusher to seat it, then apply the correct resizer to set the seal's outer diameter before final installation.

• 34630 Seal Pusher — seats the seal onto the injector tip consistently.
• 34640 and 34650 Resizers (.312 and .310) — compress seals to the right OD for Ford applications.
• 34670–34710 Stretchers (.160–.430) — stretch seals to fit various injector configurations.
• 34780 Storage case and instruction guide — keep components organized and referenced.

Who is this for? The Yoursme 34720 kit is aimed at automotive technicians, performance tuners, and skilled DIYers who regularly service fuel injectors and need a reliable, repeatable method for installing Teflon and O-ring style seals. It suits busy shops that work on Ford, GM and Subaru vehicles as well as home mechanics who want professional-grade results without improvising tools. If you replace injector seals often or service a range of engine types, this kit reduces installation errors and saves time compared with hand-fitting seals.