Running factory power levels or seeking high HP numbers? Your fuel injectors work under extreme compression and combustion pressure. Don't let wasted power escape around that OEM excuse for a seal. Seriously, have you seen an OEM injector seal? Throw it out now. Get the Corkport seal designed to deliver every horsepower to the ground where it belongs!

Our new, improved injector seals will keep you running longer and surpassing others. They are an extremely cost effective improvement, designed for 2006-2013 MZR DISI engines available in the Mazdaspeed 3 and Mazdaspeed 6.

Be sure to check out the injector seal puller and save $10 when purchased with the Mazdaspeed Injector Seals.

Mazdaspeed 3 upgraded injector seal video

The CorkSport Advantage

CorkSport injector seals are made from beautiful copper and have an excellent design.

Material: Reliable beryllium copper cups allow proper crush sealing.

Drawing of a CorkSport fuel injector seal.

Superior design: The groove and flared lip design allows the seal to crush into the cylinder head, sealing in the OEM location and against the side for superior sealing performance.

A closeup view of CorkSport injector seals installed.

A closeup view of CorkSport injector seals installed.

No studs are necessary because the clamping force does not need to be increased above factory specifications.

Additional Features

Made in the USA: Designed, engineered, and produced in North America.
Community Collaboration: These are the famous Tokay BeCuse designed V2 seals.
Long Term Development and Testing: Check out our two part blog series on the design and testing of the seals. Part #1 Part #2
CorkSport service and support: Includes a limited warranty, full color installation instructions, and all necessary hardware. We provide knowledgeable telephone support at 360-260-2675.
Warranty Details: CorkSport offers a limited warranty on the injector seals to be free from manufacturing defects for 90 days. The seals are designed to be installed once and CorkSport will not guarantee removal and a subsequent reinstallation. Installation errors of the injector seals are not covered. Please note for warranty considerations the seals will need to be returned to CorkSport for inspection before any replacement parts will be shipped out if applicable.

How To Install CorkSport 2007-2013 Mazdaspeed 3 and 2006-2007 Mazdaspeed 6 Fuel Injector Seals

It will take you between 4-6 hours to install your injector seals with hand tools. Follow our step-by-step installation instructions to increase your power.

These are a must have for the Mazdaspeed when approaching maintenance or power mods. The OEM seals look like a joke next to these Corksport ones!
These are so worth the money , I had my injectors sent out and cleaned/flow tested before installing .
The instructions are great from start to finish like always. Make sure to torque them to specifications and you’re good to go . Might want to take the extra time to catch up on other maintenance while here like cleaning the intake valves , throttle body etc .
Make sure to check out the fuel injector removal tool that you can combo with these to make life easier . I also upgraded to studs to get away from problematic t40 torx bolts . Have a good new quality bit helps as well. Would definitely buy another set again .

John Lehr02/14/2025, 08:06 AM

Won't trust any other seals on my built engine. Have bought multiple sets and haven't had any issues with them! 10/10 will buy again.

Jaclyn Wachholz09/11/2024, 07:39 AM

6 years later and a built motor, got em again. Still holding no leaks!

Raider-2nd Purchase02/27/2024, 03:16 PM

There is none better PERIOD plus that are reusable as long as you installed them correctly.

Christopher OConnor (GCPhotographers)04/25/2018, 07:39 PM

Like a GLOVE! These fit perfectly, and are amazing quality! I was so worried about damaging them installing em, but nope! Slid on! OEMs crumbled off, pretty nasty! These are hands down the best on the market! Removing the injectors was toughest part, but simply wiggling em side to side broke em free of all the carbon and off they came!

Raider09/13/2017, 01:29 PM

installed at the same time i did the braided fuel line which made it easier in a sense , have to remove power steering pump and take the belt off didn't see that in the instructions but no big deal, cylinder 1 3 4 were leaking 2 was perfect still, cleaned the injectors , manifold , throttle body and where the injectors seal and hoping for the best looks like a great quality part even better that i could clean so much while I'm down there

Carlos Freitas09/08/2017, 08:56 AM

I put them in 8 months ago. They were good at first but now I'm back to square one. I should've just put new injectors in and saved my time and money.

Garrett07/23/2017, 02:21 PM

Installed when new injectors went into built long block. As advertised holds 25lbs all day long with zero error. Higher boost level require seals. These are quality.

Tyler Blackman03/06/2017, 09:13 PM

quality product! straight forward install!

Larrison05/05/2015, 08:07 PM

A noticeable difference after install. The instructions were pretty clear up until I realize that you must move the belt pulley that is to the left of the intake manifold to get the last bolt out of the manifold. 2 of the four stock injectors were a little difficult to pull out, but once they were the install was a cinch. I do recommend removing the TIP when performing this install, it makes things much easier.

Jeff04/07/2015, 02:23 PM

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This kit fit in 2006 MSP6?

Asked by Rene Gonzalez | 05/31/2016, 02:51 PM | 1 answer(s)

Will these work with a regular mazda3 2.5L non-skyactive

Asked by Aaron Follman | 05/09/2016, 08:57 AM | 3 answer(s)

Do you have a tool that can get the old seals out?

Asked by Peter | 05/05/2016, 03:29 AM | 0 answer(s)

Do you have a tool to get the old injector seals out?