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1989-2020 Steed Speed T4/T6 Competition Manifold


Center dump COMPETITION series Steed Speed Exhaust Manifold
Available in a T4 or T6 turbo exhaust flange.

This header has been designed for those who are pushing the extreme limits with their Cummins. 
Passages are bigger than the standard manifolds with revised passage route to give more flow potential and lower EGTs.  
Shown here is T4 version with straight flange and 2.5 inch V-band wastegate port.  This version replaces our original design to improve strength and lower the cost.

  • Turbo mounting hardware
  • Turbo to manifold gasket
  • Cylinder head to manifold gaskets

This manifold will protrude 1.75"-2" further from the engine than the standard "non competition" manifold version.

Wastegate port adds an additional $250 to the product price.

This manifold will come high temperature coated.

Your satisfaction is guaranteed! If for any reason you are not happy with your Cummins manifold you can return it to us for a full refund. This does NOT apply to manifolds ordered incorrectly. Please BE CERTAIN of the wastegate style you want before you order it. ALL SALES ARE FINAL ON MANIFOLDS ORDERED WITH GATE PORTS. 

Built to order. **These manifolds generally ship 4-6 weeks after ordering**

Availability: Steed Speeds build time varies from 1 week to 8 weeks. Please contact for an ETA.
Pricing: $900.00

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Free Ground shipping on orders over $150.00 ( Lower 48 States) some exclusions may apply


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  • Free Ground shipping on orders over $150.00 ( Lower 48 States) some exclusions may apply

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