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MAP 38mm External Wastegate O2 Housings / Stainless Steel (DSM) - Modern Automotive Performance

MAP 38mm Wastegate O2 Housings - Stainless Steel | 1G/2G DSM Multiple Fitments (DSM-O2-38-SS)

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DSM Wastegate Housing 

Wastegate is shown for illustrative purposes only. Wastegate is available as an option.


  • Mitsubishi bolt pattern for use with stock location turbocharger and downpipe.
  • Stainless steel construction for superior durability.
  • Utilizes a 38mm wastegate for superb boost control & reduction of boost creep!
  • Gaskets and hardware sold separately.

Wastegate Configuration

  • Recirculated (Pictured Above): Choose this option for improved boost control and reduction of boost creep without the extra noise! Please note the re-entry of the wastegate gases on our O2 housing in comparison to the competition, routing them back in at a 90 degree angle just doesn't make sense!
  • External: Choose this option for the absolute best boost control and elimination of boost creep! Please note this option is intended for off road use only.

Ceramic Coating

  • Advanced ceramic coating (pictured above) has several key thermal properties that yield improved boost response and reduce under hood temperatures! Available in black or blue.

Please Note: That this product is built to order. Based on fluctuations in demand build times may vary throughout the year. Please contact an MAP sales representative for current estimations.


  • 1G & 2G DSM

What's in the box?

  • 1 Wastegate Housing


  • MAP Limited Lifetime Warranty