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2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)
2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)

2004 - 09 LS Thermostat Housing (-16 or -20 AN, Raw or Black)

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Running Braided Line for your cooling system? No problem with Billet Specialties Thermostat Housings for LS. Engineered to provide optimum coolant flow and provide leak-free precision attachment of your cooling lines at a great price.
 
Features: 
 
  • Precision Machined from 6061-T6 Billet Aluminum
  • Stainless hardware included.
  • Available in -16 and -20 sizes.
  • Machined or Black Anodized Finish.
  • Accepts OEM LS two-piece style thermostat and seal.
  • Includes O-Ring for use without a thermostat.
  • Includes 2- M6 X1.0 X 16mm stainless socket head cap screws for installation.
  • Made in the USA.
Fits:
  • Billet Specialties Tru Trac Systems 
  • 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")

Requires use of the following thermostats:
AC Delco LS Thermostat P/N 1311056 and P/N 131169 thermostat seal 187 degrees
Gates Thermostat P/N 34812 (includes seal) 187 degrees
Stant Thermostat P/N 14948 (includes seal) 187 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 older style pump will result in leaks.