Cummins ISX 11-17 SCR Exhaust Manifold


Cummins® ISX 15 CM2250 & CM2350


  • Improved Performance
  • Improved Durability
  • Fuel Cost Savings

Available for: ISX 2011-2017 SCR Cummins ISX



Bully Dog’s Big Rig Premium Exhaust manifolds are the fasted flowing exhaust manifolds in the industry.  REALLY!  Designed to provide quicker turbo spool, higher power output, and more fuel economy with the two main goals to maximize airflow and eliminate any and all known or possible failure points in the existing stock parts, the final result will truly blow you away.

Improved Performance

Reduced turbo lag, Lower EGT’s 80-100 F, Increase fuel mileage 0.2-0.3 mpg, 28-32 hp increase.


No leaks, No warping, No cracking. Thicker manifold flanges and exhaust manifold walls. 100% Made In The USA.

Cost Savings

Capitalize on the fuel savings and horsepower gains with our exhaust manifold. Don’t take the chance of being stranded on the road from a failed OEM exhaust manifold.

Available For: ISX 2011-2017 SCR Cummins ISX

Replaces OEM Part 3685999

Additional information

Weight 50 lbs
Dimensions 35 × 10.5 × 10.5 in


Manifold Type


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