2006-2013 Mazdaspeed 3 and Mazdaspeed 6 Performance Injector Seals

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 CorkSport 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.

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

Fitment:2007-2013 Mazdaspeed 3, Mazdaspeed 6, CX-7.
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.

Like little diamonds for your Speed, the CS injectors seals look fantastic. You see the detail that went into the design of these seals which soo many other have thus copied. install was a process, but the included color step by step instructions made the process much easier to handle. I also bought the CS injector puller with the seals. Great tool and I would consider essential to make this job simple and not require so many 4 letter words. The seals are performing great, no issues whatsoever.

James Dean01/18/2023, 09:06 AM

I have used these in many of my builds never let me down! a must have for all mazdaspeeds!

Sebastien Lopes01/09/2023, 06:57 PM

I have bought these twice now and never had any issue with them. Snapped onto the injector nice and snug 7 out of 8 times but zero leaks after close to 100k miles! Will always come back to Corksport for injector seals.

Zach Nieman07/15/2021, 07:51 PM

These seals are a very big difference from oem seals. Great construction quality way beyond oem ones. They definitely do the job and you can definitely feel the performance difference. Besides the corksport seals make sure you buy from oem kit only the 3 back seals to rebuild injectors, and torque them to specs like instruction states. Recommend this product 100%

Eliezer Perez02/08/2021, 05:42 PM

I bought these thinking that it would not make that much of a difference. But, wow its a huge difference literally night and day. If you have not upgraded your seals you definitely should. I got my injectors cleaned and flow tested as well so all honesty the car has new life. I Hit the gas now and you can feel the car wanted more. And no matter what your top portion of your injectors look like just get them replaced. Rockauto has the an injector seals set for 8-9$ an injector, dont run the risk of getting a P0300 code because of some seals let alone run the risk of taking everything off again to replace them seals. This is worth the price considering the end result which is better flow and way better engine response.

Jose Robert05/22/2020, 10:21 PM

At first I thought that the price was a little high for these 4 little brass things that looked like fittings. I had my friend install them, replace 2 gaskets and clean my valves. The extra HP you get from these seals is noticeable. The factory seals were shot, robbing me of valuable compression. I didn't give 5 stars because I believe that there is always room for improvement. Very little in this case but the price could be a little lower, also they are not nearly as easy to replace as the instructions suggest. I would highly recommend these seals.

Ricky Graham02/06/2018, 06:39 AM

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

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Is a tune required after you install these?

Asked by Ezra Martínez | 05/16/2021, 10:07 AM | 1 answer(s)