Description
Stainless Steel Engine-to-Header Flange (Renesis 13B) – This engine-to-header flange can be used to fabricate a custom exhaust system for a Renesis 13b engine. Tubing this sand-cast flange incorporates the OE exhaust air injection ports which are critical for correct emissions operations. If you are utilizing this flange for the development of a racing or off-road header we offer an optional cover plate that can be used to seal the air injection port inlet.
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Supplied with this header are four (4) stainless steel plugs that are needed to seal openings in this casting. (The openings are a result of the machining process required for the air injection supply configuration. These openings are normally sealed when this flange is used during the assembly of our RX-8 header.) If needed, an original Mazda engine-to-header gasket is available separately.
This flange requires the use of 1.75″OD tubing material for the fabrication of the primary exhaust tubes.






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