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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 face metal-on-metal friction. At IMARA Engineering Supplies, we offer high-performance oil pumps built for the heavy-duty combustion engine used in mining and construction. Our pumps protect the engine block and cylinder head from heat, preventing sudden engine failure.

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25 products

Solenoid Valve 122-5053 1225053 for CAT E325C E325CL M325

Oil Pump Solenoid Valve 122-5053 1225053 for CAT E325C E325CL M325 E322C E322CL – Engine 3126 3126B

Regular price £53.00
Sale price £53.00 Regular price
Oil Pump Assembly 178-6539 for Caterpillar E320C E320B E312D

Oil Pump Assembly 178-6539 1786539 for Caterpillar E320C, E320B, E312D Excavators

Regular price £515.00
Sale price £515.00 Regular price £159.00
Engine Oil Pump 7W-0053 / 4P-5638 for CAT 3508 3512 3516

Engine Oil Pump 7W-0053 / 4P-5638 for CAT 3508 3512 3516 – Industrial / Marine Engine

Regular price £1,891.00
Sale price £1,891.00 Regular price £946.00
Engine Oil Pump 4P-5638 for CAT 3508B 3512B – Engine

Engine Oil Pump 4P-5638 for CAT 3508B 3512B – Engine

Regular price £2,403.00
Sale price £2,403.00 Regular price £1,202.00
Engine Oil Pump 5202923 520-2923 for CAT C27 C32 Engine

Engine Oil Pump 5202923 520-2923 for CAT C27, C32 Engine

Regular price £1,019.00
Sale price £1,019.00 Regular price
High Pressure Oil Pump 32192040519 for JCB Diesel Engine

High Pressure Oil Pump (Common Rail Tube) 32192040519 for JCB Diesel Engine

Regular price £515.00
Sale price £515.00 Regular price £0.00
High pressure oil pump for Volvo EC210D, EC210B Excavator

High pressure oil pump (Common Rail Tube) for Volvo EC210D, EC210B, EC220D, EC220DL, EC240B Excavator

Regular price £515.00
Sale price £515.00 Regular price £0.00
High pressure oil pump 458-3416 - CAT E320D C6.6 Engines
High Pressure Oil Pump Tube 0445226047 for VOLVO240 D7E

High Pressure Oil Pump Tube 0445226047 for VOLVO240 D7E Excavator

Regular price £515.00
Sale price £515.00 Regular price £0.00
VH23810E0060 Common Rail Tube for SK200-8 J05E

High Pressure Oil Pump (Common Rail Tube) VH23810E0060 for SK200-8 J05E Excavator

Regular price £515.00
Sale price £515.00 Regular price £0.00
Transmission Oil Pump 20/900400 for JCB 3CX 3C 3D

Transmission Oil Pump 20/900400 (also JCB20900400) for JCB 3C, 3CX, 3D

Regular price £288.00
Sale price £288.00 Regular price £151.00
Engine Oil Pump Assy 233-5220 for CAT345 Excavator

Engine Oil Pump Assy 233-5220 2335220 for CAT 3176C, C-10, C-12, C13 Engines

Regular price £444.00
Sale price £444.00 Regular price
Cummins Oil Pump | Engine Oil Pump | Imara Engineering Supplies
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Oil Pump ME084586 for Mitsubishi 6D31 6D34 Engine

Regular price £254.00
Sale price £254.00 Regular price
Oil Pump T411864 for Perkins C4.4 1206E E70TTA CAT 329 8435

Oil Pump T411864 for Perkins C4.4 1206E E70TTA – Compatible with CAT 329 8435 – Lubrication System

Regular price £324.00
Sale price £324.00 Regular price
Oil Pump 6221-51-1100 6221-51-1101 PC300-5 Engine S6D108

Oil Pump 6221-51-1100 for Komatsu PC300-5 S6D108 Engine – Lubrication System

Regular price £183.00
Sale price £183.00 Regular price
Oil pump for DOOSAN DE12TI 65-05100-6203

Oil Pump 65-05100-6203 for DOOSAN DE12TI – Engine Lubrication System

Regular price £170.00
Sale price £170.00 Regular price
Engine oil pump 6136-52-1100 6136-52-1210 6151-51-1005 6128-52-1013

Engine Oil Pump 6136-52-1100 6136-52-1210 6151-51-1005 6128-52-1013 – Lubrication System Component

Regular price £296.00
Sale price £296.00 Regular price
RE20918 AR201738 AR75648 AR85538 Transmission Oil Pump for John Deere 4040 4050 4055 4230 4240 4250 4255 4430 4440

Transmission Oil Pump RE20918 for John Deere 4040–4440 – Powertrain System

Regular price £371.00
Sale price £371.00 Regular price

Collection: Oil 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' efficiency might be the hidden culprit.

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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