Specifications
Part Details:
This Injector Dynamics O-Ring and Seal Service Kit restores a proper seal on fuel injectors fitted with an 11mm top adapter and WRX bottom adapter. Over time, factory and aftermarket injector seals harden and shrink, leading to fuel leaks, rough idle, vacuum leaks at the injector base, or a check engine light tied to a lean condition. This kit replaces every wear point in the seal assembly with fresh, fuel-resistant O-rings sized to the correct spec for a clean, leak-free reinstall.
This is a maintenance-level part, ideal to have on hand any time injectors are pulled for cleaning, inspection, or swapping to a different injector size on a WRX build.
Key Features
- Fits injectors using an 11mm top adapter and WRX-spec bottom adapter
- Fuel-resistant O-ring material rated for direct fuel contact
- Restores proper seal to prevent fuel leaks and vacuum leaks at the injector base
- Correct fit and sizing for a clean reinstall, no cutting or trimming required
- Ideal companion kit any time injectors are removed for service or replacement
Frequently Asked Questions
When should I replace my injector O-rings?
Any time injectors are removed from the fuel rail or intake manifold, whether for cleaning, inspection, or replacement. Reusing old, hardened O-rings is a common cause of fuel leaks and rough idle after injector service.
Does this kit fit STI injectors?
This kit is sized for an 11mm top adapter and WRX bottom adapter. Confirm your injector adapter size before ordering if installing on an STI or another Subaru application.
Can I reuse the factory O-rings instead?
It is not recommended. Factory O-rings harden with heat and fuel exposure over time, and reused seals are one of the most common causes of post-service fuel leaks.
Recommended Supporting Components
- WRX Fuel System Upgrades explore injectors, fuel pumps, and fuel delivery upgrades for your WRX build.
- When Do You Actually Need Bigger Injectors on a WRX not sure if an injector upgrade is even necessary yet? Start here.
- Fuel Pumps vs Injectors: Which Upgrade Matters More compare where to prioritize your fuel system budget.
Why Buy Injector Seal Kits from Wrench Masters?
Wrench Masters stocks the small parts that keep a fuel system sealed correctly, not just the big-ticket upgrades. Ordering the correct seal kit alongside injector work helps avoid a comeback leak or a second order for a part that should have shipped with the first.
Shipping
Shipping Options:
WrenchMastersAuto.com ships your performance parts safely, quickly and conveniently nationwide via the most trusted shipping carriers such as: UPS, Fed Ex, USPS, and DHL.
Delivery Times:
- In Stock: 3-7 Business Days
- Custom Orders: 2-6 Weeks, Please Email: [email protected] or Call: 727-565-9808 for Questions.
Enjoy FREE SHIPPING on most orders over $199!
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