ICT Billet 551836-LS320 Features:

Straight -20AN Thermostat Housing For LS Gen 4 & LT Water Pump

Compatible with: Gen 4 LS engines (RPO Codes: LS2, LH6, LS7, L92, L76, LY2, LY5, LY6, LC9, LFA, LH8, LMG, LS3, L98, LSA, L9H, LS9, L20, L94, LZ1, L99, L96, LC8, L77) 2007+, LT gen 5

• This thermostat housing converts water pump inlet to a -20AN male fitting for more durable, high pressure hoses
• Thermostat housing directs hose straight away from engine, to clear frame rails and suspension components
• Compatible with 2007 or newer LS Gen 4 thermostats
• Package Includes: 1 flange, 1 housing and 2 bolts
• Will not fit on Gen 3 water pumps - See water pump guide for reference
• Gen 3 water pumps have a smaller bolt pattern