40 Delta Flow® - 2.25 Center In / 2.25 Dual Out - Aggressive Sound Differential Covers and Parts " Not just any bar can

Not just any bar can get the job done

The internal flow design is reversible

Regulate valves used on 1045996-T4/1045996-T6 waste gated Manifolds

Trucks that run in warmer climates

40 Delta Flow® - 2.25 Center In / 2.25 Dual Out - Aggressive Sound Differential Covers and Parts " Not just any bar canThis two chamber design incorporates Flowmaster's Delta Flow technology. The Delta deflectors generate increased scavenging for better performance and reduced interior sound. Milder exterior tone and reduced interior resonance over standard 40 series. Constructed of 16 gauge aluminized steel and fully MIG welded for maximum durability.