Big Block Chev Short Water Pump Polished 3/4" Shaft with 5/8" Fan Pilot Snout

Big Block Chev Short Water Pump — Polished 3/4" Shaft with 5/8" Fan Pilot Snout

Engineered for street-driven big-block Chevy applications, this Aeroflow water pump pairs lightweight cast aluminum construction with durable cooling performance. The polished 3/4" shaft and 5/8" fan pilot snout deliver reliable drive compatibility with OEM accessories and pulleys while maintaining strong flow and pressure throughout the cooling system.

Key design features

• 3/4" shaft with a 5/8" fan pilot snout for precise belt and pulley fit
• 1/2" NPT heater hose hole on the passenger side and a 1/2" NPT bypass hose hole on the top
• 3/4" ultra-duty bearings engineered for extended life under street use
• Six-blade precision impeller with curved vanes to maximize flow, pressure, and even distribution to both sides of the block
• Impeller design minimizes high-RPM cavitation and resists cracking, corrosion, and fatigue

Performance, compatibility, and usage

Built for street applications, this pump is compatible with all OEM accessories and pulleys. The lightweight aluminium construction delivers weight savings without compromising durability or cooling potential, making it a meaningful upgrade over factory pumps. It is available in long or short styles and finishes in natural cast or polished to suit your engine bay aesthetics. For reliability, use is recommended below 5,500 RPM.

What’s included

• 2 x 1/2" NPT plugs
• 2 x water pump gaskets
• 1 x straight 5/8" barb to 1/2" NPT heater hose fitting

RPM guidance

Designed for street use, this pump should not be operated on a motor exceeding 5,500 RPM.