LS Thermostat Housing w/ 16AN Male Nipple Anodizd

The LS Thermostat Housing with 16AN Male Nipple Anodized from Billet Specialties is a precision coolant management component purpose-built for LS engine swaps and high-performance cooling system configurations. Whether you're building a street machine, track car, or custom engine bay, this thermostat housing provides a clean, functional interface for routing coolant lines with integrated AN fittings—eliminating the need for external adapters and reducing clutter in tight engine compartments. Designed for builders who demand both form and function, this anodized aluminum housing delivers the aesthetic appeal and durability that modern automotive enthusiasts expect.

Manufactured from billet aluminum and anodized for corrosion resistance, the housing features a factory-integrated 16AN male nipple that accepts standard AN-16 hose fittings—eliminating bulky external adapters and simplifying your plumbing layout. The anodized finish resists oxidation and thermal cycling while maintaining a professional appearance under the hood. This compact design (5.3 x 2.3 x 6.25 inches) optimizes packaging in engine bays where real estate is premium, and the lightweight construction at 0.41 lbs contributes to overall weight savings on performance builds.

This housing is ideal for LS engine builders, engine swap specialists, and custom cooling system designers who are integrating modern LS powerplants into classic platforms or engineered bay setups. The 16AN fitting accommodates standard braided or rubber hose in high-flow cooling circuits, making it compatible with aftermarket radiators, remote thermostats, and complex coolant routing schemes. Installation is straightforward—bolt to your LS block in place of the factory housing and connect your AN lines directly. Verify your specific LS variant and cooling system configuration before ordering to ensure compatibility with your block's thermostat housing flange.