Super Seal 2mm Apex Seals for Mazda RX-8 2004-2011 13B-MSP (Renesis) Engines

  

The seals are designed to work with OEM dual springs. Hardened core seals, like the OEM part, will shatter when pushed past its limit.

Seals that have been made from softer materials, such as C40 gray iron, wear rapidly and cannot withstand high performance boost pressures experienced in most custom engine builds.