19318720 Power Steering Pump

Power Steering Pump 19318720

The 19318720, also known as OE 19318720 25960709 Power Steering Pump, Power Steering Pump 25960709 for CHEVROLET, Power Steering Pump 19318720 for CHEVROLET and Car Power Steering Pump 19318720 25960709, is a premium hydraulic power steering pump engineered specifically for General Motors' legendary sports car, the Chevrolet Corvette. Driven by the vehicle's engine, this pump utilizes a precision vane-type design and features a split configuration (does not include a fluid reservoir). It continuously delivers highly stable hydraulic pressure to the sports car's power steering system, efficiently pumping fluid to the steering gear. This significantly reduces the driver's steering effort while maintaining a clear, tactile road feel, ensuring responsive, smooth, and precise handling under high-speed or spirited driving conditions.

As a direct-fit original equipment replacement, this product is manufactured strictly to General Motors' OE technical specifications. It is designed to resolve common steering issues such as heavy steering, abnormal noises, and fluid leaks, fully restoring the vehicle's track-ready handling performance.

OE-Grade Quality Replacement: Premium replacement pump developed specifically for GM OEM part number 19318720, perfectly fitting C5 and C6 generation Corvettes.

Sports-Car-Tuned Linear Pressure: Provides balanced high-pressure hydraulic output, ensuring heavy, stable steering at high speeds and effortless maneuverability during low-speed parking.

Lightweight Aluminum Housing: Die-cast from high-strength, aerospace-grade aluminum alloy, balancing lightweight performance, extreme durability, and excellent heat dissipation within high-temperature engine bays.

100% Core Components Replacement: During manufacturing/remanufacturing, all critical wear-and-tear components-including seals, O-rings, high-temperature Teflon bushings, and heavy-duty bearings-are 100% replaced with brand-new parts.

100% Simulated Load Testing: Every unit undergoes 100% rigorous leak testing, flow-rate testing, and high-pressure load testing before leaving the factory to ensure long-lasting reliability.

Authentic Split Design: Adheres strictly to the original factory bare-pump specifications with no reservoir and no pulley, allowing for a direct, precise replacement.

Lightweight Aluminum Housing: Made of high-thermal-conductivity aluminum alloy to reduce front-end weight and accelerate heat dissipation under heavy loads.

Precision Rotor and Vane Assembly: The internal rotor and mechanical vanes are precision-ground to micrometer tolerances, providing efficient, linear fluid dynamics and reducing power loss at high RPMs.

Pressed-On Drive Shaft: The shaft end surface is specially hardened to handle pressed-on pulleys and withstand the intense shocks of sudden RPM fluctuations.

Remote Inlet Port: The low-pressure inlet port is designed to connect via a hose to the vehicle's body-mounted, remote power steering fluid reservoir.

High-Pressure Outlet Port: Features precision-machined threads to ensure a tight, leak-free seal with the high-pressure steering line under extreme pressure.

High-Performance Viton Shaft Seal: Outfitted with premium, high-temperature-resistant seals to withstand the scorching environment of a high-performance V8 engine bay over long-term use.

Heavy-Duty Low-Friction Bearing: Built-in high-RPM, low-friction bearing supports smooth shaft rotation, drastically reducing operational noise and internal mechanical wear.

Disconnect Power: Before starting the removal or installation process, turn off the engine and disconnect the negative terminal of the vehicle's battery.

Pulley Transfer (Crucial Step): This product does not come with a pulley. You must use a Corvette-specific power steering pulley puller and installer tool to press the original pulley onto the new shaft. Never use a hammer to force the pulley on, as the impact will shatter the internal hydraulic vanes and bearings, completely destroying the new pump.

Remote Reservoir Cleaning: Because the Corvette utilizes a remote fluid tank design, you must remove and thoroughly clean the original reservoir and its internal filter screen to flush out accumulated metal shavings and debris. Failing to do so will cause residual contaminants to ruin the new pump immediately.

System Flushing: Before making final connections to the new pump, thoroughly flush the high- and low-pressure hoses, as well as the steering gear lines, using clean, fresh power steering fluid.

Use Specified Fluid Only: Fill the system exclusively with GM-approved power steering fluid (such as GM #1050017 or equivalent) as designated by the manufacturer. Never use incompatible fluids, regular motor oil, or brake fluid, which will dissolve the rubber seals and cause severe leaks.

System Bleeding (Critical Sports Car Procedure): Do not start the engine immediately after installation. Raise the front of the vehicle so the wheels are completely off the ground. With the engine off, slowly turn the steering wheel from lock-to-lock at least 20–30 times. This physical cycling completely purges air trapped between the lines and the remote reservoir, preventing dry-running damage or a persistent "whining" noise caused by air pockets when the engine is started.

Final Verification: Once bleeding is complete and no air bubbles remain, start the engine. Observe the remote reservoir at idle to ensure the fluid level is stable and not foaming. Carefully inspect the high-pressure threaded fitting and the low-pressure hose connection to ensure zero leaks before taking the car for a road test.

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