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T4 & T6 Competition Manifolds for Cummins 12v & 24v 5.9L & 6.7L


Our Engineered Diesel T4 & T6 Competition Manifolds are now available for order online!

Click on a link below for more info or to order.

T4 - 12v 1989-1998

T4 - 24v 5.9L & 6.7L 1999-Present

T6 - 12v 1989-1998

T6 - 24v 5.9L & 6.7L 1999-Present

Our Competition manifolds are designed and machined in-house at Engineered Diesel!

- 3 Piece Design allows for expansion and contraction
- Ceramic Coated
- Increased HP
- less turbo lag
- more low-end torque
- lower EGTs
- Includes 12 manifold studs & bolts

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