Water Neck Riser Block

The PETERSON FLUID Water Neck Riser Block (PTR10-2250) is a precision aluminum spacer engineered to elevate the water inlet position on Chevy V8 cooling systems. This 1-inch thick riser accommodates aftermarket intake manifolds, headers, or custom engine bay configurations where standard water neck clearance is insufficient, allowing builders to maintain proper coolant flow without costly manifold modifications or fabrication work.

Machined from lightweight aluminum with clear anodized finish, the riser resists corrosion while maintaining dimensional stability under thermal cycling. The integrated O-ring seal ensures a leak-free interface between the water neck and intake manifold. At just 0.45 pounds with compact 3.9 x 1.1 x 5.15-inch dimensions, installation requires no special tools—simply position between the stock water neck and manifold, then torque fasteners to specification. The clear anodized surface permits visual inspection of sealing surfaces, a practical feature during assembly and future maintenance.

This spacer addresses a common challenge in small-block and big-block V8 builds where performance intake manifolds, tunnel-ram setups, or tight headers shift the water inlet path. Rather than investing in custom manifold work, the water neck riser block provides a direct, factory-compatible solution for street machines, race engines, and restorations. Chevy V8 builders—whether working with LS variants, traditional small-blocks, or vintage big-blocks—use this component to achieve proper coolant distribution without sacrificing intake track design or engine aesthetics.