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Oil Pump Assembly in Diesel Engines

In any internal combustion engine, the oil pump assembly is a vital safety and performance part. These units maintain proper oil pressure, ensuring that lubricating oil reaches all moving parts in heavy machinery.

Without steady lubrication, engine parts like pistons and bearings can rub against each other. This causes metal-on-metal friction.

We provide high-performance oil pumps. They are designed for heavy-duty combustion engines used in mining and construction. Our pumps protect the engine block and cylinder head from heat, preventing sudden engine failure.

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58 products

Engine Water Pump 3800883 For Cummins B3.3 QSB 3.3 QSB 4.5

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Water Pump 2W1225 for Caterpillar CAT Excavator E3208 3208T

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Water Pump 2W1225 for Caterpillar CAT Excavator E3208 3208T Engine

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Water Pump 3803605 for CUMMINS N14 NT855

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Water Pump 6685-61-1024 & 6685-611024 for Cummins NH220 Engine | Imara Engineering Supplies

Water Pump Assy 6685-61-1024 6685-611024 for Cummins NH220 Engine

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Water pump 4W7589 7C4508 For CAT E325B Excavator 3116 Engine

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Water Pump 349-6213 Caterpillar C7.1 C9.3 Engines – Engine

Water Pump 349-6213 for Caterpillar C7.1 C9.3 Engines – Engine

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Water Pump GP 235-4536 for Caterpillar C13 C15 C18 Engines

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Water Pump 20R9847 / 6031668 - Caterpillar C15 / C16 Engines

Water Pump 20R9847 20R‑9847 / 6031668 603-1668 for Caterpillar C15 / C16 / C18 / 3406E Engines

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Water Pump 6031668, 20R9847, 10R8660 - Caterpillar 740B ADT
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Water Pump U45017952 for Perkins 104-22 Engine

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Water Pump 1767000 for Caterpillar C12 Excavator Engine

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New KOBELCO E200B S6K 320 Water Pump 517693

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Collection: Water Pumps

High-Pressure Lubrication for Maximum Engine Protection

Heavy-duty engines face more stress than those running on gasoline. Using diesel fuel creates intense pressure that strains piston rings and bearings. To handle this, a high-quality pump must provide high-pressure lubrication to keep the engine operating safely and boost overall engine performance.

Reducing Friction and Protecting Components

Proper oil pressure creates a thin film over parts. Being properly lubricated significantly reduces friction, which helps improve fuel economy by letting the engine run with less resistance.

Heat Dissipation and Temperature Control

Engine oil also acts as a coolant. By moving fluid from the oil pan through the engine block, the pump pulls heat away. This stops parts from warping and lowers general wear and tear.

Supporting Accurate Engine Timing and Combustion

Stable pressure ensures the combustion chamber stays balanced. While diesel engines don’t use spark plugs, they rely on perfect timing. Good lubrication keeps these internal combustion cycles smooth.

The Connection Between Oil Pumps and the Fuel Delivery System

Lubrication and fuel systems work together. Even the best fuel injectors can't fix the damage caused by a worn oil pump.

Proper lubrication supports:

  • Smooth fuel injector operation.
  • Better fuel efficiency by cutting internal drag.
  • Balanced combustion engine cycles.

If you notice your equipment using too much fuel, your high-performance oil pumps might be losing efficiency.

Engineered for Heavy-Duty Equipment Performance

IMARA pumps are built for tough machines like excavators and dozers. While some fuels are refined from crude oil for cars, industrial engines need much stronger parts. Our oil pump assembly options are compatible with Caterpillar, Cummins, and Komatsu.

Every pump is tested for:

  • Steady high-pressure lubrication.
  • Resistance to wear and tear.
  • Protection for all internal engine parts.

Technical Support and Precision Fitment

Getting the right fit is key. At IMARA Engineering Supplies, we use your engine serial numbers to find the perfect match for your cylinder head and block, helping you avoid costly engine failure.

Frequently Asked Questions

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