Long runner design is designed to extract maximum horsepower from you Mazda 3 or Focus. Full TIG welded stainless steel construction will not rust. Our headers delete the catalytic converter and feature provisions for both primary and secondary O2 sensors. 100% bolt on installation with no cutting or welding. Dyno proven to give 10-15hp gains. SpeedLab headers will fit all Mazda 3 models (1.6L and 2.0L) as well as all Ford Focus models (1.6L, 1.8L and 2.0L)
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