Water Manifold w/20an Inlet BBC - Black

The Water Manifold w/20an Inlet BBC from MEZIERE is a precision aluminum cooling distribution component engineered for big block Chevy engines requiring custom or high-performance cooling loop integration. This manifold serves as the critical junction point where coolant enters your engine's water jacket before splitting to multiple destinations, making it essential for builders running aftermarket water pumps, custom radiator configurations, or standalone cooling systems on race or street performance builds. The 20 AN female inlet and outlet ports provide industry-standard AN fitting compatibility, eliminating the need for adapters and ensuring leak-free connections in demanding applications.

Constructed from lightweight aluminum and finished in black anodized coating, this water manifold resists corrosion while reducing underhood mass—a critical advantage when weight savings directly impact acceleration and handling balance. The manifold is supplied with all necessary O-rings and stainless hardware, eliminating sourcing delays and ensuring proper sealing at each connection point. The black anodize finish not only enhances aesthetics in visible engine bays but also provides thermal protection, reducing radiant heat transfer to surrounding components. At 2.69 lbs with compact dimensions (8.3 x 4.7 x 14.25 inches), it integrates efficiently into tight engine compartments common in tube frame or heavily modified applications.

This manifold is ideal for big block Chevy engine builders upgrading from OEM cast iron manifolds or installing full custom cooling systems where directional control and hose routing flexibility matter. Whether you're running a modern electric cooling fan setup, a dedicated overflow tank, a chiller system, or routing coolant through a remote transmission cooler, the dual 20 AN ports accommodate flexible hose runs without volumetric loss. Installation requires standard AN hose and fittings (sold separately) and basic mechanical aptitude; the included hardware accelerates the assembly process. Verify port orientation and hose routing compatibility with your specific radiator, water pump, and block configuration before final assembly.