Moroso 63467 Extended Billet Aluminum Water Filler Neck 5.75 Inch 45 Degree

The Moroso 63467 Extended Water Filler Neck is a precision-engineered cooling system component designed for Chevrolet small block, big block, and 90-degree V6 intake manifolds. This extended filler neck raises the water fill point 5-3/4 inches above the manifold, making it ideal for bleeding air from cooling systems on vehicles with low-mount radiators.

Key Features:

• 45-degree incline provides easy access for filling and clears air scoops for quick between-rounds cooldown
• Precision machined from rugged 6061-T6 billet aluminum for durability in harsh racing environments
• Natural aluminum finish resists corrosion and handles continual cap removal and replacement
• Accepts standard Moroso or aftermarket radiator caps (cap sold separately)
• Includes gasket and 1/8 inch NPT to 3/8 inch I.D. barbed fitting for plumbing expansion tanks
• 100% pressure tested for leak-free service
• Designed to work with Moroso Manifold Filler Neck Kit No. 63420

This extended filler neck positions the coolant fill point at the highest location in the cooling system, ensuring proper air evacuation and efficient cooling system performance. Perfect for both drag racing and street performance applications where cooling system reliability is critical.