Caterpillar 3412C Raw Water Pump & Cooling Components Catalog

The Caterpillar 3412C is one of the most trusted heavy-duty marine engines in the world, powering vessels that demand durability, efficiency, and long-lasting cooling performance. A properly functioning raw water pump and related cooling components are essential to ensure that this engine maintains safe operating temperatures under continuous duty.

This catalog brings together all the major raw water pump assemblies, impellers, zinc anodes, hoses, clamps, and gauges that make up the Caterpillar 3412C marine cooling system. Whether you are maintaining a commercial vessel, offshore platform, or high-capacity tug, Diesel Pro Power provides a complete solution backed by expertise and global reliability.

Marine Raw Water Pump for Caterpillar 3412C

At the heart of the Caterpillar 3412C cooling system is the marine raw water pump. This pump draws seawater from the ocean and pushes it through the engine’s heat exchangers and aftercoolers. Without it, the engine risks overheating, corrosion damage, and reduced performance.

• Designed for Heavy Marine Loads – Built to withstand continuous seawater circulation at variable flow rates.

• Precision Engineering – Provides steady flow to maintain consistent engine temperatures under heavy load.

• Durable Housing – Constructed from corrosion-resistant materials to handle harsh saltwater environments.

• Reliable Sealing – Ensures no leakage that could compromise the cooling cycle.

When replacing or servicing your Caterpillar 3412C raw water pump, it’s critical to use marine-grade components designed for high durability. Diesel Pro Power’s catalog includes the exact pump styles required for the 3412C and compatible Caterpillar marine series engines.

Marine Water Pump Impellers for Caterpillar 3412C

The impeller inside the raw water pump is one of the most important wear components. Over time, rubber blades can crack, harden, or lose flexibility, reducing water flow and increasing the risk of overheating.

• 20-Blade Bronze Impeller – Designed for high efficiency and durability in saltwater applications.

• 32-Blade Bronze Impeller – For higher flow capacity, ensuring consistent cooling even in demanding operating conditions.

• Marine-Grade Bronze Construction – Resistant to saltwater corrosion and capable of withstanding continuous flexing.

• Routine Maintenance Item – Recommended replacement at regular intervals to prevent cooling system failure.

By keeping spare impellers onboard, operators can perform fast replacements and avoid costly downtime at sea.

Expansion Tank Gasket Sets for Caterpillar 3412C

Expansion tanks regulate coolant volume and pressure within the closed-loop side of the cooling system. The gaskets within these tanks ensure a tight seal and prevent leaks.

• Engineered Fit – Designed specifically for the Caterpillar 3412C cooling system.

• Heat & Pressure Resistant – Able to withstand thermal cycling under heavy marine use.

• Prevents Coolant Loss – Essential for maintaining proper coolant levels and avoiding overheating.

Zinc Anodes for Caterpillar 3412C

Electrolysis and galvanic corrosion are constant threats in marine environments. Zinc anodes protect raw water pumps, heat exchangers, and other components by sacrificing themselves as the first line of defense.

• Multiple Sizes & Thread Types – 1/4”, 3/8”, 1/2”, 3/4”, and 1 1/4” NPT sizes available.

• Designed for Marine Use – Ensures Caterpillar 3412C engines are fully protected against saltwater corrosion.

• Easily Replaceable – Quick installation for routine maintenance schedules.

• Critical for Longevity – Protects not only the raw water pump but also internal cooling passages and heat exchangers.

Replacing zincs on schedule is one of the simplest, most cost-effective steps in extending the life of a Caterpillar 3412C.

Silicone Coolant Hoses for Caterpillar 3412C

Coolant hoses carry both seawater and coolant throughout the marine engine system. High-temperature silicone hoses are superior to standard rubber, offering greater resilience and durability.

• Range of Diameters – Available from 1” up to 4” to cover all 3412C cooling applications.

• Marine-Grade Silicone – Resistant to heat, pressure, and chemical exposure.

• Flexible & Strong – Handles constant vibration and thermal cycling in marine environments.

• Extended Service Life – Outlasts traditional rubber hoses, reducing replacement frequency.

Proper hoses are essential to prevent leaks, maintain water flow, and protect the entire cooling system from failure.

Hose Clamps for Caterpillar 3412C

Clamps may seem small, but they are critical for sealing connections between hoses and fittings. A failed clamp can cause catastrophic coolant loss in marine conditions.

• Full Range of Sizes – From 9/16” up to 3” and beyond.

• Marine-Grade Construction – Corrosion-resistant materials designed for saltwater use.

• Secure Fit – Ensures hoses remain tightly sealed even under vibration and pressure changes.

• Simple Maintenance – Easy to tighten or replace during scheduled service.

Mechanical & Electric Gauges for Caterpillar 3412C

Monitoring the cooling system in real time is essential for safe operation. Gauges help operators spot problems before they become failures.

• Mechanical Gauges – Simple, reliable, and effective for direct monitoring.

• Mechanical Gauges with Alarm – Provide audible or visual alerts for unsafe temperature or pressure conditions.

• Electrical Gauges – Available in both 12-volt and 24-volt configurations, suitable for different vessel setups.

• Critical Data – Monitor raw water flow, coolant temperature, and system pressure.

Marine Controls & Cables

Beyond the raw water pump and cooling system itself, proper control cables and marine controls ensure that operators have smooth, reliable engine management. Diesel Pro Power provides a wide catalog of marine control components, allowing ship operators to integrate and monitor their Caterpillar 3412C engine systems with precision.

Why Diesel Pro Power for Caterpillar 3412C Cooling Parts

Choosing the right supplier is just as important as choosing the right part. With the Caterpillar 3412C, every cooling component plays a critical role in protecting the engine from overheating, corrosion, and costly downtime. Diesel Pro Power is trusted worldwide for Caterpillar marine cooling solutions because we combine quality parts with unmatched service and support.

• Trusted by 40,000+ Customers Worldwide – Commercial fleets, tugboat operators, offshore vessels, and industrial users rely on our proven track record. Our customers know that when they source raw water pumps, impellers, or zinc anodes from Diesel Pro Power, they receive components designed to perform under the toughest marine conditions.

• Global Shipping to 180+ Countries – We deliver parts wherever your Caterpillar 3412C is operating. Fast, trackable service ensures you can maintain schedules and avoid extended downtime, even in remote shipping lanes or offshore locations.

• All-in-One Catalog – Instead of sourcing parts from multiple vendors, Diesel Pro Power offers a comprehensive catalog for the 3412C. From complete marine water pumps to replacement impellers, zinc anodes, hoses, clamps, and gauges, everything you need is available in one reliable source.

• Exclusive Marine & Industrial Focus – Unlike automotive suppliers, we specialize in heavy-duty diesel engines used in marine and industrial settings. This focus ensures that every Caterpillar 3412C cooling component we carry is built for continuous-duty performance and durability.

• Expert Technical Guidance – Our team provides support to help you identify the correct part for your setup. Whether you need advice on impeller size, zinc thread type, or hose diameter, our specialists ensure you select the right component the first time, reducing errors and preventing delays.

With Diesel Pro Power, you get more than just parts—you gain a trusted partner dedicated to keeping your Caterpillar 3412C running at peak efficiency.