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EXHAUST MANIFOLDS

This will be the LAST Manifold you'll ever purchase --- with a ZERO percent failure rate!!!

Stainless Diesel exhaust manifolds ARE MADE IN THE USA!  Pre-drilled and tapped with 2 ports for EGT & Drive. Available in T-3 , T-4  & T-6. Our Stainless Exhaust manifolds are made with shell molding to form a Super Smooth inside and out casting, that has superior flow over and above the old type 60 grit sandpaper like casting that all the Cast Iron exhaust manifolds are made from.  Back-to-back testing with our Stainless Exhaust Manifold shows a 20hp+ increase against competitors 3-piece cast iron manifold!

HERE'S A VIDEO TO SEE DATA ON US vs. THEM ( FLOW-BENCH NUMBERS @ 12:15 mark)

  • Our manifold makes larger chargers more Drivable, Improves Horsepower, and extends the overall power curve. Excellent Fit & Finish. 
  • Stainless Steel MANIFOLD TO CYLINDER HEAD mounting Hardware and Brass 1/8" & 1/4" NPT Plugs included. 
  • Stainless Diesel 2nd gen 24v & 12v Cummins exhaust manifolds are cast with a Stainless steel "moon metal" mix made for Extreme High Heat cycling.  
  • Stainless Diesel exhaust manifolds are built with 3/4"+ thick center section with room for extra porting if desired. Thick wall castings for Great Thermal control. 
  • The most superior thermal energy retention for Faster spool up Accelerations. 
  • Super Smooth inside runner sizing is 1.650" all the way to the center outlet for Extreme high flow. 
  • Proven single piece smooth cast design has no steps that block flow in the middle like the old style 2 & 3 piece iron manifolds causing Inefficient Turbulent Air Flow Inside... Ever wonder why your stock one-piece manifold spooled better? 
Model: T6GASK-X
This double thick extreme duty T6 gasket is recommended for high heat/high horsepower applications...
$24.99
Brand: Stainless Diesel Model: T3SP
1" Thick T3 Divided Spacer Machined from mild steelMounting holes are non-threadedThread size option is M10 x 1.5 ..
$49.00
Brand: Stainless Diesel Model: T4SP
1.00" Thick T4 Divided Spacer Machined from mild steelMounting holes are non-threadedThread size option is M10 x 1.5**This listing is for the 'spacer only' -- if wanting the complete kit, choose the stud options & gaskets for both sides...
$49.00
Brand: Stainless Diesel Model: T3_T4ADK
STAINLESS DIESEL T3 manifold - T4 turbo ADAPTER kit.  1.00" thick steel. Comes with T3 gasket Comes with T4 gasket Comes with all mounting hardware..
$159.00
T4 Manifold to T3 Turbo ADAPTER Kit T4 Manifold to T3 Turbo ADAPTER Kit
2 - 3 Days
Brand: Stainless Diesel Model: T4_T3ADK
STAINLESS DIESEL T4 manifold - T3 turbo ADAPTER kit.  1.00" thick steel. Comes with T3 gasket Comes with T4 gasket Comes with all mounting hardware..
$159.00
T4 Manifold to T6 Turbo ADAPTER Kit T4 Manifold to T6 Turbo ADAPTER Kit
Out Of Stock
Brand: Stainless Diesel Model: T4_T6ADK
STAINLESS DIESEL T4 manifold - T6 turbo ADAPTER kit.  1.00" thick steel. Comes with T6 gasket Comes with T4 gasket Comes with all mounting hardware  ..
$159.00
Model: 12VGASK
Includes:  Exhaust Manifold To Engine Block - 6 piece*How to tell the difference if you have a 12v or a 24v exhaust manifold? Rectangular ports = 12 valve Circular ports = 24 valve..
$29.00
Model: 24VGASK
Includes:  Exhaust Manifold To Engine Block - 6 piece*How to tell the difference if you have a 12v or a 24v exhaust manifold? Rectangular ports = 12 valve Circular ports = 24 valve..
$29.00
Model: TM HARDWARE
Turbo to Manifold mounting studs with flange head nuts.Choose SHORT STUDS - for a standard turbo to manifold mountChoose LONG STUDS - If you have a 1" spacer between the turbo & manifold*some manifolds have 4 "threaded" holes*some manifolds have 2 "threaded" & 2 "drilled" holes for mounting the turb..
$24.50
Model: .25NPTBRPLUG
This alan head/ hex drive countersunk plug is a brass pipe fitting with 1/4" male NPT threads. The countersunk plug with a hex drive inserts into a pipe or fitting to close and terminate its end and has a recessed hex head for increased bearing load. This plug is used to close off the EGT ports in ..
$3.58
Model: 1/8NPTBRPLUG
This alan head/ hex drive countersunk plug is a brass pipe fitting with 1/8" male NPT threads. The countersunk plug with a hex drive inserts into a pipe or fitting to close and terminate its end and has a recessed hex head for increased bearing load. This plug is used to close off the EGT ports in ..
$3.48
Model: STUDS-SS/HEX
STAINLESS EXHAUST MANIFOLD MOUNTING STUDS (89-18 CUMMINS)Stainless Steel Studs (12) with Serrated Nuts (12) Corrosion ResistantRecommended Torque - 36 to 41 foot lbs.   ***THESE DO NOT WORK ON STOCK 12V MANIFOLDS - ONLY WORKS WITH AFTERMARKET MANIFOLDS******2003+  5.9L AND 6.7L TRUC..
$58.49
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