FBSCTMH Billet 90° Swivel Thermostat Housing 1.5in CNC Aluminum Anodized for GM LS Engines

FBSCTMH's 90° billet swivel thermostat housing is a precision-machined aluminum water neck that replaces factory housings on GM LS-series engines for improved fit, durability and routing flexibility.

This compact 1.5" inlet thermostat housing is CNC-machined from 6063 aluminum with an anodized finish and uses stainless-steel fasteners for long-lasting corrosion resistance. It fits a wide range of GM LS engines — including LS1, LS2, LS3, LS7, LS9, LSA and related L-series variants — and accepts standard 1.5" hoses while rotating to help optimize coolant plumbing layout in custom or high-performance builds.

How does this billet housing improve coolant routing in tight engine bays?

The 90° swivel design lets you rotate the outlet to clear obstructions and align hoses without forcing bends that can collapse or restrict flow. Its compact footprint reduces interference with intake manifolds or accessories, giving you cleaner, straighter hose runs.

• 90° swivel outlet for customizable hose orientation
• 1.5" inlet size to match common performance hoses
• CNC-machined body for tight dimensional tolerances
• Anodized finish resists wear and corrosion

What materials and hardware are used, and why do they matter?

The main body is made from 6063 aluminum, chosen for its machinability and resistance to corrosion when anodized. Critical mounting and sealing surfaces are stable under thermal cycling, while included stainless-steel bolts resist rust and maintain clamp force over time.

• 6063 aluminum main body for lightweight strength
• Anodized surface oxidation for added corrosion protection
• Stainless-steel bolts included to prevent seizing
• Precision machining ensures consistent sealing and alignment

Which engines and vehicles is this thermostat housing compatible with?

This housing is built to work with a wide range of GM small-block V8s, including both stock and many aftermarket intakes. It lists compatibility with LS1, LS2, LS3, LS7, LS9, LSA, L76, L92 and other GM LS-series platforms — also suitable for many Vortech-equipped 4.8L, 5.3L and 6.0L applications when plumbing is matched.

• Fits GM LS-family engines: LS1, LS2, LS3, LS7, LS9, LSA, L76, L92
• Works with common aftermarket intake setups and supercharged packages
• Designed for 1.5" hose connections used in performance systems
• Package includes 1 housing and 2 mounting bolts for installation

How do I install and maintain this swivel thermostat housing?

Installation is straightforward for anyone familiar with basic coolant system service: remove the factory neck, fit the supplied gasket or sealant, and torque the stainless bolts to spec while orienting the swivel to your desired hose route. Periodic checks for bolt torque and hose clamp integrity are recommended to prevent leaks after initial heat cycles.

• Replace factory housing and use included bolts for secure fitment
• Orient swivel outlet before final torque to avoid stress on hoses
• Check clamps and bolt torque after first heat cycles
• Contact seller within one year for product support if needed

Who is this for? This billet swivel thermostat housing suits DIY enthusiasts, hot-rod builders and professional tuners who need a stronger, neater coolant connection on GM LS-series engines. It's especially useful for anyone running aftermarket intakes, superchargers, or altered accessory layouts where the factory water neck causes clearance problems. Choose this unit when you want a durable, adjustable solution that cleans up your plumbing and resists corrosion in high-performance environments.