Marine Water Pump

Parts for Caterpillar 3406B – Marine Water Pump Section

The Caterpillar 3406B relies on its raw water pump as the central component of the marine cooling system, ensuring seawater flows consistently through the heat exchanger, oil cooler, and other key areas of the engine. Without dependable circulation, overheating and performance loss can quickly occur, making a high-quality pump essential for long-term reliability. Diesel Pro Power supplies raw water pumps and matching components designed specifically for the Caterpillar 3406B, delivering both durability and precise fitment.

Marine Water Pump for Caterpillar 3406B

This heavy-duty raw water pump is engineered to maintain reliable seawater circulation even under the most demanding marine operating conditions. Built from marine-grade materials, it is resistant to corrosion, saltwater intrusion, and wear caused by continuous use.

• Port Type: 2” Flange for secure and leak-free connections

• Durability: Designed to withstand harsh marine environments and constant saltwater exposure

• Perfect Fit: Manufactured to match the Caterpillar 3406B marine cooling configuration, ensuring compatibility without modification

• Consistent Flow: Maintains the proper cooling water supply for stable operating temperatures and extended engine life

By choosing this raw water pump and related cooling components, operators of Caterpillar 3406B engines can ensure maximum uptime, reduced risk of overheating, and dependable cooling system performance.

Impeller Puller for Marine Water Pumps

Removing impellers from a Caterpillar 3406B pump can be difficult without the right tool. This impeller puller is designed for safe, efficient removal, reducing the risk of damage to the pump housing or impeller blades.

• Precision-fit tool for Caterpillar marine water pumps

• Protects impeller hub and shaft during servicing

Marine Impeller for Caterpillar 3406B

The impeller is the heart of the raw water pump, responsible for drawing seawater into the system. For the 3406B, a bronze impeller with 12 blades and a double flat drive ensures consistent flow and long service life.

• Diameter: 3 3/4”

• Height: 3 1/2”

• Heavy-duty bronze construction for corrosion resistance

Zinc Anodes for Caterpillar 3406B Cooling Systems

Zinc anodes protect the raw water pump, heat exchangers, and other cooling components from galvanic corrosion caused by seawater exposure. Multiple sizes are available to match different parts of the Caterpillar 3406B cooling system:

• 1/4” NPT Zinc Anodes – Compact, effective for smaller housings

• 3/8” NPT Zinc Anodes – Medium-sized protection for pump bodies

• 1/2” NPT Zinc Anodes – Longer service life for larger components

• 3/4” NPT Zinc Anodes – Heavy-duty option for extended marine use

• 1 1/4” NPT Zinc Anodes – Maximum protection for high-capacity water passages

Each zinc anode is designed to be easily replaced as part of regular maintenance, ensuring long-term corrosion defense for the Caterpillar 3406B cooling system.

Silicone Coolant Hoses for Caterpillar 3406B

Flexible, heat-resistant silicone coolant hoses connect the raw water pump to other components in the cooling system. Available in multiple diameters, these hoses provide leak-free performance and withstand the rigors of marine operation.

• Sizes include 1”, 1 3/4”, and 1 7/8” inside diameters

• Sold in 1-foot lengths for customizable installations

• High-temperature resistance for extended durability

Why Choose Diesel Pro Power for Caterpillar 3406B Cooling Parts

Operators around the world rely on Diesel Pro Power for Caterpillar 3406B cooling system components because of our proven track record, specialized focus, and commitment to long-term performance. Keeping a Caterpillar 3406B marine engine running cool under heavy workloads requires dependable parts, and Diesel Pro Power delivers on every level.

• Trusted by 40,000+ Customers Worldwide – Our reputation is built on decades of service to tugboats, commercial fishing fleets, ferries, offshore vessels, and shipping companies. From independent operators to global fleets, customers know they can count on us for consistent quality.

• Global Shipping to Over 180 Countries – Whether your Caterpillar 3406B powers a vessel in a busy port or a remote harbor, our fast, trackable delivery ensures you receive the right parts when you need them most. Minimizing downtime is our top priority.

• Complete Catalog in One Place – We stock the full range of Caterpillar 3406B cooling system parts, including raw water pumps, impellers, zinc anodes, hoses, gaskets, clamps, and seals. Having everything in one catalog means operators save valuable time searching for multiple suppliers.

• Exclusive Marine Focus – Unlike general suppliers who serve multiple markets, Diesel Pro Power is dedicated solely to heavy-duty marine engines like the Caterpillar 3406B. This specialization ensures that every product is carefully sourced for marine-grade durability and saltwater resistance.

• Expert Technical Support – Our team provides more than just parts. We offer guidance on impeller sizing, zinc replacement intervals, hose compatibility, pump rebuild procedures, and troubleshooting cooling system issues to keep your Caterpillar 3406B running efficiently.

• Proven Reliability in Harsh Conditions – Every component we supply is designed for the demanding marine environment, with a focus on resisting corrosion, handling constant exposure to seawater, and providing consistent performance during long hours of operation.

By sourcing Caterpillar 3406B cooling parts from Diesel Pro Power, operators gain more than just replacement components—they gain peace of mind. With our unmatched customer support, global reach, and marine-specific expertise, you can be confident that every part is engineered for durability, precision fit, and reliable service life.