Engine Assemblies for Excavators & Heavy Equipment Skip to content

Questions about installation or compatibility? Our experts are here to help. Call us now: +61 405 244 342 / 1300 974 961 For USA/CANADA, call +1 213 289 0578 Fast International Shipping Worldwide.

Complete Engine Assemblies for Excavators & Heavy Equipment

A complete engine assembly is the central power source in tracked machinery and plays a critical role in overall equipment performance. Engine assemblies generate and regulate power flow, driving hydraulic pumps, track drive systems, and final drives that move excavators, bulldozers, and other heavy equipment efficiently.

In demanding environments, a new engine assembly ensures stable power delivery to undercarriage drive components such as excavator drive sprockets, track links, and track chains. When engines are running smoothly, machines experience reduced wear and tear, improved control, and longer component life.

Poor engine output or unstable torque can lead to power loss, uneven movement, and excessive strain on undercarriage systems. This type of poor engine performance often accelerates sprocket damage and shortens the lifespan of connected components.

IMARA Engineering Supplies provides high-performance engine assemblies engineered for long-term reliability. Whether replacing a failed unit or upgrading a fleet, our engines deliver consistent torque, controlled fuel consumption, and dependable operation that protects your machinery and keeps productivity high.

Compare (0/5)

53 products

Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y SAA6D114E-3 for Komatsu PC300-8, PC350-8 & PC360-8 Excavators

Regular price £4,638.00
Sale price £4,638.00 Regular price £2,319.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y D1105 for Kubota Diesel Applications

Regular price £2,697.00
Sale price £2,697.00 Regular price £1,349.00
Engine Ass'y 4BT3.9 for Cummins Excavator Applications

Engine Ass'y 1106D-70 for Perkins Applications

Regular price £7,334.00
Sale price £7,334.00 Regular price £3,667.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y ISB QSB 6.7 6D107 for Cummins Applications

Regular price £4,853.00
Sale price £4,853.00 Regular price £2,427.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y SAA12V140E-3 for Komatsu PC2000 & HD785-7

Regular price £10,785.00
Sale price £10,785.00 Regular price £5,393.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 404D-22T for Perkins Industrial Applications

Regular price £540.00
Sale price £540.00 Regular price £270.00
Engine Ass'y 4BT3.9 for Cummins Excavator Applications

Engine Ass'y 4BT3.9 for Cummins Excavator Applications

Regular price £2,697.00
Sale price £2,697.00 Regular price £1,349.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 6CTA8.3-G1 G2 for Cummins Generators

Regular price £3,775.00
Sale price £3,775.00 Regular price £1,888.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 4BT3.9 for Hyundai R170LC-5 Excavator

Regular price £3,236.00
Sale price £3,236.00 Regular price £1,618.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 6BTAA5.9-C for CLG927D Excavator

Regular price £5,770.00
Sale price £5,770.00 Regular price £2,885.00
Engine Ass'y C13 for CAT 336 Excavator & 740 Dump Truck

Engine Ass'y S4S 32A32-05100 for Excavators

Regular price £1,295.00
Sale price £1,295.00 Regular price £648.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y C15 365-2961 for CAT Excavators

Regular price £20,026.00
Sale price £20,026.00 Regular price £10,013.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Caterpillar C2.2 Diesel Engine Assembly (Perkins 1104D-44T) for CAT 216B & 226B Skid Steer Loaders

Regular price £5,069.00
Sale price £5,069.00 Regular price £2,551.00
Caterpillar C11 Engine Assembly 360-6751 for CAT 330D 950H

C11 Engine Assembly 360-6751 3606751 for CAT Caterpillar 330D, 345C, 950H, 740B Engines

Regular price £28,057.00
Sale price £28,057.00 Regular price £28,057.00
Diesel Engine Assembly PE11203 for John Deere 323D Loader

Diesel Engine Assembly PE11203 for John Deere 323D Compact Track Loader

Regular price £5,325.00
Sale price £5,325.00 Regular price

Collection: Engine Assembly

Complete Engine Assemblies vs. Component Rebuilds

When an engine fails, operators must decide whether to repair individual components or install a full engine assembly. While rebuilds may address isolated issues, complete engine assemblies offer clear operational advantages.

Minimized Downtime:

A drop-in engine assembly can be installed quickly. This reduces downtime compared to long rebuilds. Rebuilds often involve internal parts like pistons, crankshafts, or a worn timing belt.

Factory-Tested Performance:

Each engine assembly is balanced and tested to ensure efficient power transmission and smooth interaction with hydraulic pumps and track drive systems.

Extended Service Life:

Modern engines are designed to handle heat, vibration, and continuous workloads. Improved internal tolerances help protect exhaust systems, cooling components, and undercarriage parts from early failure.

Engineered for Mining and Construction Applications

Our engine assemblies are designed for heavy-duty construction, mining, and industrial use. From machines requiring heavy-duty drive sprockets for mining excavators to those operating under constant load cycles, our engines deliver dependable output.

Each assembly supports efficient power flow, converting fuel energy into controlled motion while maintaining excellent fuel economy. Proper alignment between the engine and drivetrain ensures smoother movement, reduced shock loading, and consistent traction across steel or rubber tracks.

Unlike a car engine, heavy equipment engines must sustain continuous output without interruption, even when operating alongside auxiliary systems that rely on electric power and higher operational demands.

Engine Maintenance for Long-Term Reliability

Even the best engine assembly requires proper engine maintenance to perform optimally. A lack of routine care can result in reduced efficiency, overheating, or premature failure.

Regular Checks and Filters:

Regular checks of air filters and fuel filters help keep the fuel system clean and protect internal components from contamination that leads to wear and tear.

Monitor Warning Indicators:

Ignoring a check engine light or warning codes related to sensors such as the oxygen sensor can lead to undetected performance issues and increased fuel consumption.

Cooling and Exhaust Systems:

Maintaining the cooling system prevents overheating that can damage seals and internal components. Well-maintained exhaust systems also help engines operate efficiently under load.

Proper maintenance ensures engines continue running smoothly, deliver stable power, and avoid sudden power loss that can disrupt operations.

Order Engine Assemblies with Confidence

When you choose IMARA Engineering Supplies, you partner with a supplier focused on performance, reliability, and technical accuracy. Each engine assembly undergoes rigorous testing to ensure proper power delivery, controlled emissions, and durability under demanding conditions.

Frequently Asked Questions

Powering Your Projects with Premium Parts.
Your Trusted Source for Heavy Equipment Solutions.
Engineered for Excellence, Delivered on Time.