Billet Specialties LS Thermostat Housings are precision machined from 6061-T6 Billet Aluminum and available in 3 different styles
All fit:
Billet Specialties Tru Trac Systems
GM LS series water pumps that utilize a separate thermostat and water neck housing.
Edelbrock LS Water Pumps
Straight Out
LS Thermostat Housing 15 Degree Swivel
LS Thermostat Housing w/AN Male Nipple
Available in machined finish or Black
-16AN or -20AN