Chevy Big Block 348/409 High-Flow Mechanical Water Pump - Polished

This Chevy 348/409 W-Series High-Flow Mechanical Water Pump is designed for Chevrolet Big Block Gen I "W" engines. Featuring a high-volume 8-vane anti-cavitation impeller and lightweight aluminum housing, it helps improve coolant circulation while maintaining compatibility with 348 and 409 accessory drive systems.

Pulley Alignment
5.500 in. hub height and 0.625 in. pilot diameter help position the pulley and fan drive during installation.

Impeller & Flow Design
The 8-vane clockwise high-volume impeller setup helps move coolant steadily through the block, heads, and radiator circuit.

Installation Notes
Confirm gasket included: yes, mounting hardware included: no, back housing included: yes before final assembly.

COMPATIBLE WITH
CHEVROLET BIG BLOCK V8 GEN. I (W)
• 5.7 L / 348 in3
• 6.7 L / 409 in3

SPECIFICATIONS
Color: Silver
Fan Clutch Included: No
Finish: Polished
Gasket Included: Yes
Grade Type: Performance
Housing Material: Aluminum
Hub Height: 5.500 in.
Hub Hole Quantity: 8
Hub Thickness: 0.500 in.
Impeller Material: Aluminum
Impeller Rotation: Clockwise
Impeller Vane Quantity: 8
Includes Back Housing: Yes
Mounting Hardware Included: No
Mounting Hole Quantity: 4
Outlet Quantity: 1
Pilot Diameter: 0.625 in.
Pulley Included: No
Pump Flow: High-volume
Thermostat And Housing Included: No
Water Pump Drive Type: Mechanical