The Speedmaster PCE191.1024 is a precision-machined billet aluminum inline thermostat housing neck designed specifically for Chevy GM LS engines. Crafted from high-quality billet aluminum, this housing neck offers a clean, strong upgrade over factory plastic or cast units, delivering improved durability and a polished underhood appearance.
This housing comes complete with an O-ring for a leak-free seal right out of the box, making installation straightforward and reliable. Designed as a direct-fit inline replacement for GM LS applications, it is an ideal choice for street builds, performance upgrades, and engine swaps where a dependable cooling system connection is essential.