PLM Power Driven H-Series 4-1 Drag Header H22 F20B RMF
Private Label MFG Power Driven RMF Drag H-Series header features a true 4-1 merge for equal exhaust flow. This one piece design delivers the best HP performance while still utilizing your factory OEM Catalytic converter (CAT). *Private Label MFG recommends using our test pipes for easier installation of H-Series headers. Recommended for swap cars with H22-Motors. This Exhaust manifold was intended for regular H22 swaps and not H2Bs. Modification will be needed to make this fit H2b kits, depending on the make of the kit. a few percentage of h22 motors have a few different deck heights, 1 part of the steel oil pan might need to be massaged to have the header fit. If your oil pan is aluminum, we do recommend swapping it out for a steel one.
Brand New In Box Made of 304 Stainless steel One year limited warranty True 2.5" collector Machined CNC-ed manifold flange Flange is .38" which is just about 3/8" thick 18G on the 304 S/S. Measured at .049" to .050" One piece design