Scania Marine Raw Water Pumps & Impellers

Scania marine engines are built for endurance, reliability, and heavy-duty service across commercial, industrial, and leisure vessels. But no matter how well-designed the engine, it cannot perform without a dependable cooling system. At the heart of that system is the raw water pump , supported by its critical component — the impeller .

The raw water pump pulls seawater into the engine’s cooling circuit, while the impeller inside ensures steady flow and pressure. Without these parts functioning properly, even the most durable Scania engine can overheat and suffer damage.

At Diesel Pro Power, we specialize in supplying Scania raw water pumps and impellers to operators worldwide. Trusted by more than 40,000 satisfied customers in over 180 countries , our catalog ensures that fleet managers, engineers, and boat owners can source the correct pump and impeller quickly and with confidence.

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Why Raw Water Pumps Matter in Scania Marine Engines

Every Scania marine engine — from the compact DI09 to the heavy-duty DI16 — depends on its raw water pump. The pump ensures that seawater is drawn in, circulated through the heat exchanger, and then expelled overboard, carrying excess engine heat with it.

• Temperature Regulation – Maintains stable engine operating conditions.

• Component Protection – Prevents piston, liner, and cylinder head damage caused by overheating.

• Efficiency – Supports fuel economy and consistent performance across variable loads.

• Longevity – Extends the service life of the engine by preventing heat-related wear.

At the core of every raw water pump is the impeller — a flexible rubber rotor with multiple vanes that move seawater efficiently. Impellers wear down over time, making scheduled replacement vital for protecting the engine.

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Scania DI09 Marine Engines – Raw Water Pumps & Impellers

Engine Overview

The Scania DI09 is a 9-liter, inline 5-cylinder engine designed for medium-duty marine applications. Commonly found in fishing vessels, workboats, and ferries , the DI09 is valued for its balance of power and efficiency.

Raw Water Pump Function

On DI09 engines, the raw water pump provides steady seawater circulation through the engine’s cooling system. Its role is especially important for smaller commercial and passenger craft, where reliability ensures daily operations remain uninterrupted.

• Compact pump design for limited engine room space.

• Built to handle variable RPM conditions common in marine service.

• Designed to resist corrosion from continuous seawater exposure.

Impellers for Scania DI09

• Flexible impellers with rubber vanes for efficient seawater transfer.

• Easy-to-replace design — a routine task during preventive maintenance.

• Should be inspected every 12 months or 500 hours, whichever comes first.

Maintenance Notes

• Replace impellers annually to avoid vane breakage.

• Check for scoring or corrosion inside the pump housing.

• Monitor for leaks at the shaft seal, which can allow seawater into the bilge.

Why Buy From Diesel Pro Power

• Fast global shipping for Scania DI09 pumps and impellers.

• Expert verification of engine compatibility before shipping.

• Trusted by 40,000+ customers, ensuring operators avoid costly downtime.

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Scania DI13 Marine Engines – Raw Water Pumps & Impellers

Engine Overview

The Scania DI13 is a 13-liter, inline 6-cylinder engine, widely used in commercial marine fleets, offshore support vessels, and high-performance passenger ferries . It offers higher power than the DI09, making cooling performance even more critical.

Raw Water Pump Function

The DI13 raw water pump circulates larger volumes of seawater to match the engine’s higher horsepower demands. It ensures that elevated combustion and turbocharging temperatures remain under control.

• Built for high-capacity flow rates.

• Rugged construction to endure continuous-duty workloads.

• Engineered to operate under long-term stress in industrial and marine service.

Impellers for Scania DI13

• Larger diameter impellers for greater seawater volume.

• High-grade marine rubber for durability in saltwater conditions.

• Must be replaced at regular intervals to prevent overheating from reduced flow.

Maintenance Notes

• Inspect impellers for cracked or missing vanes.

• Lubricate new impellers during installation to avoid dry start damage.

• Replace gaskets and seals at the same time to prevent leaks.

Why Buy From Diesel Pro Power

• Coverage of all DI13 marine raw water pump configurations.

• 24-hour average shipping time to minimize vessel downtime.

• Direct support from marine diesel specialists who confirm fitment before shipping.

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Scania DI16 Marine Engines – Raw Water Pumps & Impellers

Engine Overview

The Scania DI16 is a 16-liter, V8 powerhouse designed for large commercial vessels, offshore rigs, tugs, and luxury yachts . With output levels significantly higher than DI09 and DI13 models, it places extreme demands on its cooling system.

Raw Water Pump Function

On the DI16, the raw water pump is engineered for maximum seawater throughput . The pump must maintain continuous flow at high RPMs, often under heavy load conditions where engine temperature climbs rapidly.

• Large-capacity pump assemblies for high-horsepower marine engines.

• Heavy-duty shafts and bearings built to withstand long service intervals.

• Designed to perform reliably in both tropical waters and cold environments.

Impellers for Scania DI16

• Oversized impellers for high-volume cooling capacity.

• Constructed from marine-grade rubber reinforced for durability.

• Replacement required at least annually, with more frequent intervals recommended for continuous-duty operations.

Maintenance Notes

• Monitor pump seals carefully — even minor leaks can compromise performance.

• Inspect impellers every 500 hours or sooner in heavy service.

• Replace pump bearings if unusual vibration or noise is detected.

Why Buy From Diesel Pro Power

• Direct availability of DI16 marine raw water pumps and impellers.

• Proven track record of supplying fleets, shipyards, and industrial operators worldwide.

• Trusted by 40,000+ satisfied customers, backed by fast delivery and expert guidance.

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Common Symptoms of Raw Water Pump & Impeller Failure

Operators of Scania DI09, DI13, and DI16 engines should remain alert to warning signs that pumps or impellers need service:

• Engine Overheating – Often caused by worn or missing impeller vanes.

• Reduced Water Discharge – A sign of restricted flow through the pump.

• Noise or Vibration – Bearing wear or shaft misalignment inside the pump.

• Saltwater Leaks – Indicate failing seals or gaskets.

• Rubber Debris in Strainer – A clear sign that the impeller is breaking apart.

Prompt replacement of worn impellers or pumps prevents more severe engine damage and downtime.

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Why Marine Operators Choose Diesel Pro Power

Operators choose Diesel Pro Power for more than just availability — they choose us because we deliver long-term value:

• Dependable Quality – Every Scania raw water pump and impeller we supply is engineered for the demands of marine service.

• Comprehensive Support – Our team verifies compatibility for DI09, DI13, and DI16 engines before shipping.

• User-Friendly Website – Designed for easy part identification, so you can find your pump or impeller in minutes.

• Fast Global Shipping – Most orders leave our warehouse within 24 hours, keeping your vessel moving.

• Proven Trust – Backed by over 40,000 satisfied customers across 180+ countries.

Conclusion

Whether you operate a Scania DI09 powering a fishing vessel, a DI13 in a high-speed ferry, or a DI16 in a heavy-duty tug or luxury yacht, your raw water pump and impeller are essential for reliable performance. These components safeguard your engine against overheating and ensure efficient operation under all marine conditions.

At Diesel Pro Power, we make it simple to source Scania raw water pumps and impellers with fast global delivery, expert support, and trusted quality. With decades of experience and a customer base spanning more than 180 countries, Diesel Pro Power is the worldwide leader in Scania marine cooling solutions.

Explore our catalog today and keep your Scania engine performing at its best.