The WOD -16 AN LT Thermostat Housing is precision machined from 6061 billet aluminum to simplify coolant plumbing on GM Gen V LT engines while retaining proper thermostat operation. Designed for custom chassis, LT engine swaps, rock crawlers, Ultra4 race cars, prerunners, and high-performance street builds, this housing converts the factory coolant outlet to a clean, durable -16 AN connection. Unlike many swap setups that eliminate the thermostat, this housing is designed to retain the factory LT thermostat. Maintaining thermostat operation helps the ECU properly manage coolant temperature, warm-up cycles, fuel delivery, ignition timing, and overall engine performance while giving builders the flexibility of AN-style coolant plumbing. Includes: (1) WOD -16 AN LT Thermostat Housing Specifications Specification Details Manufacturer Wide Open Design Application GM Gen V LT Engines Material 6061 Billet Aluminum Coolant Outlet -16 AN Thermostat Compatibility Factory GM LT Thermostat Finish Precision Machined Country of Origin Made in USA Fitment Universal Fitment for GM Gen V LT Engines Compatible Engines: LT1 LT2 LT4 LT5 L82 L83 L84 L86 L87 L8T Other GM Gen V LT-based engines Ideal Applications: LT engine swaps Tube chassis builds Rock crawlers Rock bouncers Ultra4 race cars Prerunners High-performance street vehicles Custom AN cooling systems Fitment Notes: Designed for the factory GM LT thermostat. Requires -16 AN hose ends and fittings. Verify thermostat style and coolant routing before installation. Thermostat, gasket, fittings, and hose are sold separately unless otherwise specified. FAQ Why should I keep the thermostat on an LT engine? Modern LT engines rely on coolant temperature data for proper ECU operation. Retaining the thermostat allows the engine to reach its intended operating temperature, improving warm-up, fuel control, ignition timing, and overall drivability. Does this housing include a thermostat? No. The factory thermostat and gasket are sold separately unless otherwise specified. Will this fit my LT engine? This housing fits GM Gen V LT engines including LT1, LT2, LT4, LT5, L82, L83, L84, L86, L87, L8T, and other LT-based engine platforms. Why convert to -16 AN coolant plumbing? -16 AN hose provides a clean, professional cooling system with flexible routing that is ideal for custom chassis, engine swaps, and race vehicles where molded factory hoses are difficult to package. Is this housing intended for racing? Yes. It is designed for severe-duty cooling systems found in rock crawlers, Ultra4 race cars, prerunners, rock bouncers, custom chassis builds, and high-performance street applications. What are the advantages of billet aluminum? Billet 6061 aluminum offers excellent strength, corrosion resistance, and dimensional accuracy while providing a clean, professional appearance that stands up to demanding off-road environments.
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