PAI 381801 Engine Water Pump A/3406 B/3406

( Brand: Pai ), ( Manufacturer Part Number: 381801 ), ( Part Type: Engine Pump )

Review PAI Engine Water Pump Assembly A/3406 B/3406 Caterpillar

The PAI 381801 engine water pump is an essential component designed specifically for use with Cat 3406A, 3406B, and certain other applications of the Caterpillar 3406 engine series. This water pump is engineered to deliver efficient cooling performance, ensuring the long-term reliability and optimal operation of your engine.

The pump is constructed with robust materials, featuring a durable cast iron housing that provides excellent resistance to wear and tear, as well as a sturdy impeller made from engineered polymer, which ensures reliable performance even under heavy loads. The pump's heavy-duty design includes a thermostat housing that is integrated into the pump body, streamlining installation and reducing the number of parts required.

The PAI 381801 engine water pump operates using a belt-driven system, ensuring smooth and consistent operation. The pump's impeller is designed with a closed impeller vane that minimizes cavitation, reducing the risk of water pump failure and improving overall cooling efficiency. The pump's top cover is O-ring sealed, providing an effective barrier against coolant leaks.

This water pump is easy to install, with a simplified installation process compared to traditional water pumps. The pump's design includes a one-piece shaft, which eliminates the need for shaft seals and reduces the likelihood of leaks. Additionally, the pump's inlet and outlet ports are located on the same side, allowing for easier routing of hoses and reducing the amount of work required for installation.

The PAI 381801 engine water pump is backed by PAI's commitment to quality and customer satisfaction. This water pump is designed to meet or exceed OEM specifications, ensuring reliable and consistent performance. Additionally, PAI offers a comprehensive warranty on this water pump, providing peace of mind and protection against manufacturing defects.

In summary, the PAI 381801 engine water pump is a robust and efficient cooling solution designed for use with Cat 3406A, 3406B, and select other applications of the Caterpillar 3406 engine series. With its durable construction, simplified installation process, and commitment to quality, this water pump is an excellent choice for those seeking reliable and consistent cooling performance for their engines.

Buying a PAI 381801 engine water pump for Caterpillar 3406A, 3406B models can be a good investment for several reasons. Here are some pros and cons to consider:

1. OEM Quality: The PAI 381801 water pump is a factory original equipment manufactured by Caterpillar, ensuring a perfect fit and match for your engine.

2. Durability: Caterpillar is known for its robust and long-lasting components. The PAI 381801 water pump is no exception. It is designed to withstand the rigors of heavy-duty applications.

3. Reliability: By using an OEM water pump, you can trust that it will perform as intended and help maintain the cooling system's efficiency.

4. Compatibility: This water pump is specifically designed for the 3406A, 3406B engines, ensuring a seamless installation process.

1. Cost: OEM parts, such as the PAI 381801 water pump, tend to be more expensive compared to aftermarket alternatives.

2. Availability: Depending on your location and the supplier, it might take some time to source and receive the part.

In conclusion, the PAI 381801 engine water pump for Caterpillar 3406A, 3406B models offers several advantages, including OEM quality, durability, reliability, and compatibility. However, it comes with a higher cost and potential availability issues compared to aftermarket alternatives.

Ultimately, the decision to purchase this water pump depends on your budget, the urgency of the replacement, and your preference for Original Equipment Manufacturer parts. If you value the peace of mind that comes with using genuine Caterpillar components and are willing to pay the premium, then the PAI 381801 water pump is a solid choice. However, if you're looking for a more cost-effective solution, you may want to consider aftermarket alternatives.

Details:

Engineered using the latest technology to ensure product lasts longer in service. Pai 381801 Engine Water Pump Assembly For 3406 A/3406 B/3406 for Caterpillar: Part Number: Manufacturer: PAI. Designed specifically for trucks, trailers, and buses. Made of high-quality components for durability, reliability, and performance.

Engineered with a factory-like design for effortless installation, ensuring perfect match your vehicle. Manufactured following strict OE standards to work like the original component.

part #: 381801 prices

• $370.80-$474.15

specifications coenginecooling:

• for makes: Caterpillar
• brand: Pai
• mpn: 381801
• part type: Engine Pump

payments coenginecooling:

• other
• wallet: Google-pay
• credit card: Visa

shipping coenginecooling:

• cost: $0.00
• transit: 5-10 Days
• class: Standard
• service: Standard
• type: Fixed

general coenginecooling:

• Commercial Truck Parts > Engine Cooling > Water Pumps Kits
• condition: New

returns coenginecooling:

• policy: Returns Accepted
• time: 30 Days
• Paid by: Seller

offer coenginecooling:

• sold: 0
• best offers: True
• availability: In Stock
• options: Ship-to-home
• quantity: 4
• started: November 16, 2025

seller coenginecooling:

• # reviews: 58663
• city: Los Angeles, California
• rating: 98.8%

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