AISIN Water Pump WPT-803 Carbon Ceramic Engine Cooling Pump

Description

Product Overview

The AISIN WPT-803 water pump is engineered to provide superior cooling performance for a wide range of Lexus and Toyota models. Built with a carbon ceramic mechanical seal, the pump offers exceptional resistance to wear, corrosion, and coolant scaling, extending service life far beyond conventional pumps. The exterior is precision‑machined from high‑grade carbon ceramic material, delivering a smooth, aerodynamic surface that promotes efficient coolant flow throughout the engine cooling circuit.

Measuring 10.8 x 13.6 x 4.8 inches and weighing just 3.2 pounds, the pump fits seamlessly into the vehicle’s existing cooling system. It is a direct‑fit, vehicle‑specific component that replaces the OEM part number 16100‑09440 (or 1610009440) without the need for additional modifications. The included gasket ensures a leak‑free seal, while the ball bearing rotor design reduces friction and noise during operation. All components are brand‑new, not remanufactured, guaranteeing the highest level of reliability and performance.

Usage

This water pump is designed for use in passenger cars that require a high‑capacity cooling solution. It is ideal for drivers who demand consistent engine temperatures during city commuting, highway cruising, and demanding conditions such as towing or high‑altitude travel. The pump’s robust construction makes it suitable for both warm climates, where coolant temperatures can rise quickly, and colder regions, where the pump must maintain flow without freezing.

Installation is straightforward for qualified technicians. The pump connects to the engine block and radiator via standard fittings, and the included gasket eliminates the need for additional sealing compounds. Once installed, the pump immediately begins circulating coolant, maintaining optimal operating temperatures and protecting critical engine components from overheating.

Why Choose Us

Choosing the AISIN WPT-803 means selecting a product backed by the world’s leading original equipment manufacturer of water pumps. AISIN’s extensive research and development resources ensure that each pump meets rigorous quality standards, from material selection to final assembly. The carbon ceramic seal is a proprietary technology that provides unmatched durability, while the machined exterior reduces turbulence, improving overall cooling efficiency.

Every pump undergoes comprehensive testing, including pressure, flow, and endurance trials, to verify performance under real‑world conditions. AISIN also offers a dedicated customer support team ready to assist with fitment verification, installation guidance, and after‑sales service. This commitment to quality and support gives owners confidence that their vehicle’s cooling system will perform reliably for years to come.

Key Features

• Carbon ceramic mechanical seal provides superior wear resistance and long service life.
• Precision‑machined exterior reduces coolant turbulence for more efficient heat removal.
• Ball bearing rotor design minimizes noise and friction, delivering quiet operation.
• Includes OEM‑grade gasket for a leak‑free installation, eliminating extra parts.
• Backed by AISIN’s global support network and warranty for peace of mind.

FAQ

What vehicles are compatible with the AISIN WPT-803 water pump?

The pump fits a range of Lexus and Toyota models, including Lexus ES350 (2007‑2018), RX350 (2007‑2015), RX450h (2010‑2015), Toyota Camry (2005‑2018), Highlander (2008‑2016), RAV4 (2006‑2012), Sienna (2007‑2016), and Venza (2009‑2016). Always verify the specific engine code using the fit checker before purchase.

How does the carbon ceramic seal improve pump performance?

The carbon ceramic seal is highly resistant to corrosion, rust, and coolant scaling. Its hardness reduces wear on the sealing surfaces, maintaining a tight seal over the pump’s lifespan and preventing coolant leaks that could lead to overheating.

Is the pump a direct replacement for the OEM part?

Yes, the AISIN WPT-803 is a direct‑fit replacement for OEM part numbers 16100‑09440 and 1610009440. It matches the original dimensions and mounting points, allowing for a seamless swap without additional modifications.

Can I install the pump myself?

While the pump is designed for straightforward installation, we recommend that a qualified mechanic perform the replacement. Proper torque specifications and gasket placement are essential to ensure a leak‑free seal and optimal performance.

What warranty does AISIN provide for this water pump?

AISIN offers a standard limited warranty covering defects in materials and workmanship. For detailed warranty terms, please refer to the product documentation or contact AISIN customer support.

By choosing the AISIN WPT-803 water pump, you invest in a high‑quality component that safeguards your engine’s temperature, enhances reliability, and delivers the performance you expect from a premium OEM part. Whether you are replacing a failed pump or upgrading to a more durable solution, this pump provides the confidence and peace of mind needed for every drive.