Yoursme Injector Seal Installer Kit 8pc — Hardened Steel Teflon Seal Pushers & Resizers with Case

The Yoursme 34720 Injector Seal Installer Kit is an 8-piece, hardened-steel tool set that installs and sizes Teflon injector seals for many Hitachi, Bosch, Continental and Delphi fuel injectors used in Ford, GM and Subaru engines.

If you service fuel injectors or rebuild fuel rails, precise seal seating matters to stop leaks and preserve engine performance. This kit groups pilot cones, stretchers and resizers in a labeled, corrosion-resistant set so you can stretch, seat and size single- and double-seal Teflon O-rings quickly. The compact case keeps tools organized and marked for fast selection on the bench or in the field.

How does this kit ensure correct installation of Teflon injector seals?

The kit provides shaped pilot cones to start the seal on the injector tip and dedicated pushers/resizers to compress the seal to the correct outside diameter before fitting into the cylinder head. Using the right sequence — pilot, pusher, sizer — reduces risk of rolling or tearing the seal during installation. Each tool is hardened and corrosion-coated to keep dimensions accurate over repeated use.

• Pilot cone positions the seal on the injector tip for even entry
• Seal pushers move the seal into its groove without damage
• Resizers compress the seal to the precise OD for a secure head fit
• Tools are labelled for quick identification and repeatability

Which engines and injectors are compatible with the 34720 kit?

This set is built for broad aftermarket fitment: it fits many Hitachi, Bosch, Continental and Delphi single- and double-sealed injectors commonly found on Ford, GM and Subaru vehicles. It also accommodates a number of Ford ECOBoost direct injectors. Fitment covers a range of GM and Subaru model years and displacement families typically listed in technician references.

• GM: many 1.4L–6.2L engines from 2010 onward
• Subaru: common 2.0L and 2.4L turbo applications (2014–2019)
• Ford: most injectors from 2011 and newer including some direct injection models
• Works with Hitachi, Bosch, Continental and Delphi Teflon seals

What tools are included and how do I use them step-by-step?

The kit contains a selection of seal pushers, stretchers and resizers matched to common injector seal sizes plus a storage case. The typical procedure is: place the pilot cone on the injector tip and thread the seal on, slide the pusher to seat the seal into the groove, then use the correct resizer to compress the seal to the right outer diameter before installing into the cylinder head.

• Included: 34630 seal pusher and multiple resizers (.310, .312, etc.)
• Stretchers (.160, .250, .330, .408, .430) for different seal IDs
• Step: pilot cone → pusher → resizer → install into head
• Compact labeled case and simple printed guide for reference

How durable and accurate are the tools for shop use?

Each piece is machined from premium steel and finished with a corrosion-resistant coating so edges stay true through repeated installations. Hardened construction provides impact resistance and consistent dimensions, which helps maintain reliable seal sizing over time. Clear markings on each tool speed selection and reduce operator error under busy shop conditions.

• Hardened steel construction for long service life
• Protective coating prevents rust and oxidation
• Clearly marked tools for quick identification
• Compact storage case for transport and organization

Who is this for: The Yoursme 34720 Injector Seal Installer Kit is designed for professional mechanics, independent shops and knowledgeable DIYers who rebuild or service fuel injectors and need reliable, repeatable seal installation. If you work on Ford, GM or Subaru engines that use Hitachi, Bosch, Continental or Delphi injectors and want a durable, labeled tool set to avoid seal damage and leaks, this kit is a practical, compact solution.