Sinister Diesel 1999-2003 7.3L Powerstroke, Thermostat Housing – SD-THERMO-7.3


Product Highlights:

The Sinister Diesel Thermostat Housing is a drop-in replacement for the OEM housing, with several advantages. It’s anodized billet aluminum construction resists corrosion that often plagues OEM units. The Precision CNC machining and thick base plate ensure a complete seal for years to come. It’s finished off in our Signature Sinister Blue to add some great looks to your engine bay.

NOTE: This thermostat housing is NOT compatible with Mishimoto thermostats

Vehicle Fitment

1999-2003 Ford Powerstroke 7.3L

Key Features

  • 6061 T6 Billet Aluminum Construction
  • Longer life with a leak-proof seal
  • Tough, heat-resistant design
  • Blue anodized finish for extra protection and a clean and stylish appearance


  • (1) Sinister Diesel Thermostat Housing
  • (3) Hardware Bolts

*Special Order. Please allow for additional shipping time.