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Engine Assembly for Heavy Machinery

Restore full power and efficiency to your equipment with premium engine assemblies for heavy machinery from Imara Engineering Supplies. Our complete engine units are engineered for performance, durability, and compatibility, ensuring your excavators, loaders, bulldozers, and other construction machines operate at peak output. Built to withstand demanding workloads and harsh environments, Imara engine assemblies deliver reliable combustion, smooth operation, and long service life.

Designed as direct-fit replacements for leading equipment brands, our OEM-style and aftermarket engine assemblies make machine overhauls faster, simpler, and more cost-effective. Whether you're dealing with reduced power, engine failure, or high operating hours, installing a new or remanufactured engine assembly can drastically reduce downtime and restore productivity. With Imara’s technical support and worldwide delivery, your fleet can get back to work with confidence.

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53 products

Caterpillar C27 Rebuild Engine Assembly 440-0240

Rebuild Engine Assembly 440-0240 4400240 for Caterpillar C27

Regular price $185,000.00
Sale price $185,000.00 Regular price $171,208.94
C15 Engine Assy 487-6161 for CAT 374D 374F

C15 Engine Assy 487-6161 4876161 for CAT 374D, 374F Excavators

Regular price $111,678.52
Sale price $111,678.52 Regular price $1,678.52
Engine Assembly 8188177 VOE8188177 for Volvo EC360BLC Engine

Engine Assembly 8188177 VOE8188177 for Volvo EC360BLC Engine

Regular price $0.00
Sale price $0.00 Regular price
Engine Ass'y 4M50 for Mitsubishi KATO HD820-5 SY215-10

Mitsubishi Engine Ass'y 4M50 for KATO HD820-5 & Sany SY215-10 Excavators

Regular price $8,900.00
Sale price $8,900.00 Regular price $8,000.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Isuzu Engine Ass'y 6BG1-TABFD-08-C2 for Excavators

Regular price $8,500.00
Sale price $8,500.00 Regular price $5,500.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Isuzu Engine Ass'y 6BG1 for Hitachi EX200-5, EX225-5, ZAX230-6 & ZAX210W Excavators

Regular price $7,890.00
Sale price $7,890.00 Regular price $5,500.00
Hydraulic/Transmission Cooler Type 2 56021486 LH621 Loader

Engine Ass'y S4S 32A32-05100 for Mitsubishi Excavators (Straight-Through Configuration)

Regular price $11,800.00
Sale price $11,800.00 Regular price $1,200.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 4JG1 for Isuzu-Powered Doosan DH55 & Hitachi ZAX70 Excavators

Regular price $3,600.00
Sale price $3,600.00 Regular price $1,800.00
Water Pump GP 235-4536 for Caterpillar C13 C15 C18 Engines

Engine Ass'y 3TNV88-GGHWC for Yanmar 3D88 & 3D88E Excavators

Regular price $5,998.00
Sale price $5,998.00 Regular price $2,999.00
Engine Ass'y 4M50 for Mitsubishi KATO HD820-5 SY215-10

Engine Ass'y 6CTA8.3 for Cummins-Powered Excavators

Regular price $16,798.00
Sale price $16,798.00 Regular price $8,399.00
Water Pump GP 235-4536 for Caterpillar C13 C15 C18 Engines

Engine Ass'y QSK23 for Komatsu PC1250 & EX1200-6 Excavators

Regular price $2,200.00
Sale price $2,200.00 Regular price $1,100.00
Water Pump GP 235-4536 for Caterpillar C13 C15 C18 Engines

Engine Ass'y 6BT5.9-6D102 for Cummins Excavators

Regular price $6,580.00
Sale price $6,580.00 Regular price $3,290.00
Hydraulic/Transmission Cooler Type 2 56021486 LH621 Loader

Engine Ass'y QSM11-C375 for Cummins Excavator Applications

Regular price $26,000.00
Sale price $26,000.00 Regular price
Hydraulic/Transmission Cooler Type 2 56021486 LH621 Loader

Engine Ass'y 4BT-C130 for Cummins 4-Cylinder Applications

Regular price $12,000.00
Sale price $12,000.00 Regular price
Engine Ass'y C13 for CAT 336 Excavator & 740 Dump Truck

Engine Ass'y QSK50-C2000 for Liebherr R9400 Excavator

Regular price $500,000.00
Sale price $500,000.00 Regular price $250,000.00
Engine Ass'y 4BT3.9 for Cummins Excavator Applications

Engine Ass'y QSX15 510HP for CE750-8 Excavator

Regular price $19,200.00
Sale price $19,200.00 Regular price $9,600.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 4BT3.9 Turbo for Cummins Excavators

Regular price $6,800.00
Sale price $6,800.00 Regular price $3,400.00
Engine Assembly 6I0793 for Cat 3116 Engine – CAT 953B Loader

Engine Ass'y 6BT5.9 for Cummins Equipment

Regular price $6,600.00
Sale price $6,600.00 Regular price $3,300.00
Hydraulic/Transmission Cooler Type 2 56021486 LH621 Loader

CAT C2.2 Engine Ass'y 233-6648 for CAT 216B, 226B Skid Steer Loaders

Regular price $0.00
Sale price $0.00 Regular price

Collection: Engine Assembly

Why Choose Imara for Engine Assemblies?

Contractors, fleet managers, and operators trust Imara Engineering Supplies for aftermarket engine assemblies that meet or exceed OEM specifications. Customers rely on us because we offer:

High-performance engines built for durability and continuous operation

Compatibility with Caterpillar, Komatsu, Hyundai, Hitachi, John Deere, and more

Competitive pricing and reliable global shipping

Expert technical guidance and 24/7 after-sales support

With Imara, sourcing the right replacement engine assembly is efficient, accurate, and hassle-free.

Our Range of Complete Engine Assemblies

We supply a wide variety of engine assemblies for heavy equipment, including:

Fully assembled diesel engines

Remanufactured engines for cost-effective replacements

Long block and short block assemblies

OEM-style rebuilds and high-quality aftermarket upgrades

Each listing includes detailed compatibility notes so you can select the correct unit with certainty.

Applications in Heavy Machinery

Engine assemblies are the core of machine performance, delivering the power needed for digging, lifting, grading, and driving. Imara’s heavy-duty engines are used across construction, mining, agriculture, and industrial sectors—providing the torque, reliability, and fuel efficiency operators depend on. By choosing quality assemblies, contractors reduce maintenance costs, extend machine life, and keep productivity high even under extreme workloads.

Order with Confidence

When you choose Imara Engineering Supplies, you’re partnering with a supplier committed to performance and reliability. Every engine assembly undergoes rigorous testing to ensure optimal output, smooth operation, and long-term durability. With fast international delivery and round-the-clock support, Imara makes it easy to restore your machinery to full working condition.

Frequently Asked Questions

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