Chevy 409 Mechanical Water Pump

Deliver unmatched cooling performance with the Chevy 409 Mechanical Water Pump — precision-built by March Performance for power, reliability, and efficiency. Engineered to move 35 GPM at 4,000 RPM with minimal cavitation and proportional increases at higher RPMs, this water pump keeps your 409 running cool under pressure.

Featuring a heavy-duty 3/4-inch steel shaft, billet steel hubs, and shielded seal roller ball bearings, it’s designed to withstand high-performance demands. The O-ring sealed back plate ensures a leak-free fit, while the 1.84-inch inlet and .625-inch pilot guarantee compatibility and precision alignment.

Included standard with all March Performance All-Inclusive 409 Serpentine Systems, this mechanical water pump combines race-proven durability with show-quality craftsmanship — built for enthusiasts who expect the best from every component.

Features:

• 35 GPM at 4K RPM w/ minimal cavitation and proportional increased flow rates at 5K RPM
• Heavy Duty 3/4" Steel Shaft
• Billet steel hubs and shielded seal roller ball bearings
• O-Ring sealed back plate
• 1.84" inlet
• .625" Pilot

**Included with March Performance All Inclusive 409 Serpentine Systems!