Retno High-Volume Aluminum Water Pump – Short Nose, Ribbed Housing, SBC

Retno High-Volume Aluminum Water Pump – Short Nose, Ribbed Housing, SBC

Upgrade your cooling system with the Retno High-Volume Aluminum Water Pump, designed for high-performance Small Block Chevy (SBC) engines. Engineered with a ribbed aluminum housing, a heavy-duty ball and roller bearing assembly, and an enlarged internal cavity, this water pump is built to support increased coolant flow for demanding performance and racing applications.

The larger internal cavity is designed to deliver approximately 30–40% greater coolant flow than a stock-style pump, helping improve cooling system circulation under demanding conditions. Retno has tested these water pumps in race cars, making them a performance-focused option for builders looking to improve cooling system capability on the track or in a high-performance street application.

Featuring a short-nose design, a 5/8-inch shaft, and a natural aluminum finish, this pump combines practical packaging with durable construction and a clean, classic performance appearance.

Product Features

• High-Volume Design: Enlarged internal cavity designed to increase coolant flow by approximately 30–40% compared with a stock-style pump.

• Ribbed Aluminum Housing: Durable aluminum construction with a ribbed exterior design.

• Heavy-Duty Bearing Assembly: Ball and roller bearing assembly designed for demanding performance use.

• Short-Nose Configuration: Suitable for applications requiring a short-nose water pump.

• 5/8-Inch Shaft: Features a 5/8-inch shaft.

• Natural Aluminum Finish: Clean, uncoated aluminum appearance.

• Race-Tested: Tested in race cars for performance application development.

• Engine Application: Designed for Small Block Chevy (SBC) high-performance engines.

Specifications

• Brand: Retno

• Product Type: High-volume aluminum water pump

• Engine Application: Small Block Chevy (SBC)

• Housing Material: Aluminum

• Housing Design: Ribbed

• Pump Configuration: Short nose

• Bearing Assembly: Heavy-duty ball and roller bearing assembly

• Shaft Diameter: 5/8 inch

• Finish: Natural aluminum

• Flow Improvement: Approximately 30–40% greater coolant flow than stock-style design, as specified

Built for Performance

Whether you're preparing a race car or building a high-performance SBC engine, the Retno High-Volume Aluminum Water Pump is designed to provide increased coolant circulation with durable components and a compact short-nose configuration.

Please verify water pump compatibility, pulley alignment, shaft requirements, and available clearance with your specific engine and accessory setup before ordering.