Parts for Caterpillar 3406C – Marine Water Pump Section

Maintaining proper cooling is critical to the performance and longevity of your Caterpillar 3406C marine engine. The raw water pump system ensures seawater is drawn in, circulated, and used to regulate operating temperatures under the most demanding marine conditions. Below you’ll find a complete catalog of water pumps, impellers, zincs, coolant hoses, and clamps designed for the Caterpillar 3406C. Each part is built for durability in corrosive saltwater environments and engineered to meet the exact specifications of Caterpillar’s heavy-duty cooling system design.

Marine Water Pump for Caterpillar 3406C

A robust seawater pump designed specifically for Caterpillar 3406C engines, this pump provides consistent seawater circulation essential to cooling efficiency.

• Port Type: 2” Flange

• Heavy-duty marine construction for long-term reliability

• Engineered to withstand vibration, temperature swings, and continuous operation in offshore environments

• Direct fit for Caterpillar 3406C marine cooling systems

Impeller Tools & Components

Impeller Puller for Marine Water Pumps
A precision tool designed to safely and quickly remove impellers from the pump housing. Using an impeller puller prevents shaft damage and extends the lifespan of the water pump. Ideal for routine maintenance intervals on Caterpillar 3406C engines.

Replacement Impeller for Caterpillar 3406C

• 12-blade impeller with double flat drive design

• Diameter: 3 3/4” – Height: 3 1/2”

• High-quality marine-grade rubber ensures excellent water flow and resistance to wear

• Compatible with raw water pumps fitted to the Caterpillar 3406C

Zinc Anodes for Caterpillar 3406C Marine Engines

Protecting your cooling system from corrosion is vital when operating in seawater environments. Diesel Pro Power supplies a full range of zinc anodes engineered for the Caterpillar 3406C. These sacrificial zincs safeguard critical components such as heat exchangers, pump housings, and cooling jackets.

• NPT 1/4” Zincs – Compact protection for auxiliary cooling channels.

• NPT 3/8” and 1/2” Zincs – Standard replacements for Caterpillar marine cooling systems.

• NPT 3/4” to 1 1/4” Zincs – Heavy-duty options for maximum corrosion resistance on larger system components.

• Built with high-purity zinc for consistent performance in saltwater.

• Easy to install and replace during scheduled maintenance cycles.

Silicone Coolant Hoses for Caterpillar 3406C

Silicone hoses provide superior flexibility, heat resistance, and durability compared to standard rubber hoses. They are essential in maintaining coolant flow between the raw water pump, heat exchanger, and other cooling components.

• Available in multiple inside diameters ranging from 1” up to 4”

• Resistant to oil, saltwater, and high operating temperatures

• Sold in convenient 1-foot sections for easy custom fitting

• Designed to minimize collapse under vacuum conditions

Hose Clamps for Caterpillar 3406C Cooling System

Durable hose clamps are critical for preventing leaks and maintaining a secure seal in high-pressure marine environments. Diesel Pro Power provides a full selection of clamps compatible with Caterpillar 3406C coolant and fuel hoses.

• Effective diameter ranges from 9/16” up to 3”

• Stainless steel construction for maximum corrosion resistance in saltwater service

• Smooth inner band design to prevent hose damage

• Suitable for both coolant and fuel applications in Caterpillar 3406C engines

Why Buy Your Marine Water Pump for Caterpillar 3406C from Diesel Pro Power

When it comes to keeping your Caterpillar 3406C marine engine running at peak efficiency, the raw water pump is one of the most critical components in the cooling system. Without a reliable seawater pump, your engine is at risk of overheating, suffering premature wear, and losing valuable uptime during operations. That’s why choosing the right supplier matters just as much as choosing the right part. Diesel Pro Power has earned the trust of more than 40,000 satisfied customers worldwide, and here’s why operators continue to rely on us when sourcing marine water pumps and cooling components for the Caterpillar 3406C.

A True Marine-Only Focus

Unlike general parts suppliers that cater to multiple industries, Diesel Pro Power is dedicated exclusively to heavy-duty diesel engines in marine and industrial applications. That means every water pump we supply is sourced with the unique challenges of marine service in mind—saltwater corrosion, continuous duty cycles, and the need for absolute reliability. When you buy your Caterpillar 3406C water pump from us, you’re getting a product that has been tested and proven for the harshest marine environments.

Complete Cooling System Coverage

Purchasing a water pump is only part of maintaining the Caterpillar 3406C’s cooling system. Impellers must be replaced regularly, zinc anodes need to be monitored and swapped out before they are consumed, and hoses and clamps must remain secure to avoid leaks. Diesel Pro Power provides every component you need in one place—from the heavy-duty raw water pump itself to impellers, zincs, silicone coolant hoses, and clamps. Having access to a complete catalog means you can order everything in one shipment, saving valuable time and reducing the risk of overlooking a critical part.

Proven Global Reach and Fast Delivery

Downtime can cost operators thousands of dollars per day. That’s why Diesel Pro Power ships Caterpillar 3406C marine water pumps and components to over 180 countries, with trackable, expedited delivery options that minimize waiting times. Whether you are operating a tugboat in North America, a supply vessel in the Middle East, or a cargo ship in Asia, you can count on Diesel Pro Power to deliver parts quickly and reliably, reducing your vessel’s idle time and keeping your schedule intact.

Trusted by Marine Operators Worldwide

The Caterpillar 3406C is a workhorse engine found in countless vessels across the globe, and Diesel Pro Power has become the go-to source for operators who value consistency, precision, and durability. Our reputation is built on years of supplying fleets, shipyards, and individual vessel owners with marine cooling solutions that last. Every product is backed by expert knowledge and a commitment to reliability that has kept customers returning again and again.

Expert Technical Support at Every Step

Not every operator has a full engineering team on hand, and troubleshooting cooling systems can be challenging. That’s why Diesel Pro Power offers personalized technical support to help with impeller sizing, zinc replacement schedules, gasket compatibility, and raw water pump rebuilds. Our team understands the Caterpillar 3406C inside and out, and we provide guidance that ensures you order the right components for your application the first time.

Confidence in Every Purchase

By sourcing your Caterpillar 3406C water pump from Diesel Pro Power, you gain more than just a replacement part—you gain peace of mind. With a marine-exclusive catalog, a proven record of reliability, and global customer support, you can trust that every component will meet or exceed OEM performance standards. That confidence translates into fewer breakdowns, longer engine life, and maximum uptime for your vessel.

In short, Diesel Pro Power is the dependable partner Caterpillar 3406C operators trust to keep their cooling systems efficient, corrosion-free, and ready for continuous service.