By applying their knowledge and experience of EJ engines to the ZN6/ZC6, Tomei conducted even further tests to produce 2 new exhaust manifolds with different characteristics. This is their Unequal Length version. It is made from 304 stainless steel and incredibly thick flanges. A 4-1 layout is chosen for the Unequal length Header. It is made primarily for torque rather than peak power and will toughen up that boxer sound that subarus are known for. Tomei's quality is second to none and it shows with these headers.
Includes all hardware and gaskets for install as well as a thermal insulation sheet and bolt paste.