Overview

PRW Low RPM Mechanical Water Pumps

PRW Low-RPM high-flow mechanical water pumps are specialized automotive cooling upgrades engineered to prevent low-speed and idle overheating by delivering significantly higher coolant flow at lower engine speeds than factory stock pumps. Order the model recommended for your vehicle.

Key features and design:

* Billet impellers: Unlike standard stamped steel or basic cast impellers, these use precision-machined billet or reliable CNC-machined cast iron impellers with tight clearances to maximize velocity
* High-flow at low RPM: Delivers roughly 35 percent more coolant flow from idle up to 2,000 rpm compared to stock equipment, and out-flows standard aftermarket alternatives by about 30 percent in that same range
* Durable construction: Built with low pressure-injected A356 aluminum alloy bodies, heavy-duty 0.75 in. steel shafts, billet steel hubs, and shielded-seal roller ball bearings to handle high-stress environments
* Pressure-balanced passages: Equalizes water flow distribution throughout the engine block to minimize internal hot spots at any speed
* Applications
-- Towing and heavy-duty: Ideal for trucks, motorhomes, and towing applications that frequently idle or move slowly under heavy loads where conventional water pumps tend to suffer from low-speed "boil-over"
-- Street performance and racing: Helps maintain consistent temperature control across the entire powerband for hot rods, classic muscle cars, and track vehicles

Applications

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