Exhaust Manifold Header Fit For BMW 02-08 Mini Cooper R50/R52/R53 MT001133 94791813Features F1 style 4 into 1 merge collector for reduced turbulence which creates more horsepower and torque T304 stainless steel heavy duty tubing, TIG welded and natural finish. Tubing wall thickness is increased to 1. 5mm. Includes O2 (lambda) sensor ports just like the original down pipe configuration includes high quality 200 cpsi metallic Euro 5 catalytic converter. Improvement is approximately 12 hp. The header includes a flexible joint for any