The ISR 4-2-1 Stainless Steel Header Expanded to a 3" Flange to enable easy bolt on application to stock cat or any aftermarket testpipe and exhaust system.
Whats in the Box:
1x exhaust manifold gasket
1x 2 bolt 3" gasket
1x 4-2-1 tubular Header
** All ISR Performance Products are Designed for Off Road Use Only **
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