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2004 - 09 LS Thermostat Housing 15 Degree Swivel

Select Your Finish

2004 - 09 LS water pumps that have a 1.87” thermostat hole in the pump and a 2.99” center to center mounting bolt hole. Works with all Billet Specialties LS Tru Tracs 1,2,3,6 &7 with Edelbrock 8896 water pump.

  • Precision Machined from 6061-T6 Billet Aluminum
  • Stainless Mounting Hardware
  • Works with LS style Thermostat and Seal (see below for part numbers)
  • Made in the USA
  • Includes 2- M6 X1.0 X 16mm stainless socket head cap screws for installation. 


  • Billet Specialties Tru Trac Systems with 8896 water pump
  • GM LS series 2004-2009 water pumps that utilize a separate thermostat and water neck housing.
  • Edelbrock LS Water Pumps
  • For 1-1/2” Radiator Hose
The hole diameter in the pump will be 1.875-1.885" (1 - 7/8")  and a 2.99” center to center mounting bolt hole.

Requires use of the following thermostats:
AC Delco LS Thermostat P/N 131156 and P/N 131169 thermostat seal 187 degrees
Gates Thermostat P/N 34812 (includes seal) 187 degrees
Stant Thermostat P/N 14948 (includes seal) 18 degrees

Will not fit early water pumps 97-03 that have a one-piece thermostat housing. (thermostat is locked into housing with aluminum tabs on each side) The hole diameter in the pump is 2.052" (2 - 1/16") Installing this housing on an older-style pump will result in leaks.