Steed Speed | 3rd Gen Cummins T4 Flange Exhaust Manifold

NOTE: As of 03/04/25, estimated lead times are 7-9 Weeks unless otherwise noted. Customer responsible for all tariff fee's and are NOT included in price.

Testing at Fleece performance has shown very strong gains in power and much lower EGTs. Dyno results showed 142hp and 380 ft lbs at 2000 rpms on 650 hp truck.

Per Steed Speed, this is a stock replacement manifold.