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Overspeed Motorsports Injector Seals Mazdaspeed 3 2007-2013 | Mazdaspeed 6 2006-2007


Overspeed Motorsports Mazdaspeed 3/6/CX-7 injector seals are hands down the best seals on the market. These seals have been tested in engines producing well above 700hp and unlike any other manufacturer on the market, can still boast a 100% success rate. These seals are machined in house at Overspeed Motorsports from high quality beryllium copper cups to allow proper crush sealing.

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.


Overspeed Motorsports’ injector seals will eliminate many issues relating to the failure of the factory injector seals. Whether you’re trying to fix your failed, blown out factory seals or you want to reinforce the seal because of a high power applicatoin, or possibly both, these are for you. Loose and blown out injector seals can cause cylinder pressure to leak out through the injector area causing a loss of power, false knock from the seals moving around, and other issues. The problem needs to be addressed immediately if it’s a problem and avoided if you’re modifying. Overspeed seals are high quality and they’re the last seals you’ll ever need for your Mazdaspeed.

Weight 1 lbs
Dimensions 6 × 4 × 1 in