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3116
Caterpillar

The Cat 3116 is a classic, 6.6-liter inline-six-cylinder diesel engine renowned for its robust mechanical design, outstanding reliability, and versatile application across multiple industries. Although no longer in production, it remains a highly valued power source worldwide due to its mechanical simplicity, durable construction, and cost-effective operation, making it a trusted choice for demanding environments.
The following table summarizes the key technical data for the 3116 engine platform:
Note: Power varies significantly by configuration (e.g., industrial, marine, truck).
The Cat 3116 engine is a highly adaptable power plant found in a wide array of equipment:
Construction & Earthmoving: Early-model excavators (e.g., Cat 320, 325), wheel loaders (e.g., Cat 928G, 930G), and other heavy machinery.
On-Highway Trucks: Medium-duty trucks such as GMC TopKick, Chevrolet Kodiak, and Ford F-Series (F600-F750).
Industrial & Power Generation: Stationary generator sets, air compressors, and industrial pumps.
Marine Applications: Auxiliary power and propulsion for small commercial vessels and workboats.
Mechanical Fuel System: The engine utilizes a reliable Mechanical Unit Injection (MUI) system. Its (medium-pressure injector) operates between 40-120 MPa, known for durability and easier maintenance compared to modern electronic systems.
Durable Core Structure: Built with a cast-iron cylinder block and head, a forged steel crankshaft, and wet cylinder liners for exceptional longevity and ease of rebuild.
Turbocharged Performance: Most configurations are turbocharged and aftercooled, providing a strong power-to-weight ratio and responsive torque.

The Cat 3116 is a classic, 6.6-liter inline-six-cylinder diesel engine renowned for its robust mechanical design, outstanding reliability, and versatile application across multiple industries. Although no longer in production, it remains a highly valued power source worldwide due to its mechanical simplicity, durable construction, and cost-effective operation, making it a trusted choice for demanding environments.
The following table summarizes the key technical data for the 3116 engine platform:
Note: Power varies significantly by configuration (e.g., industrial, marine, truck).
The Cat 3116 engine is a highly adaptable power plant found in a wide array of equipment:
Construction & Earthmoving: Early-model excavators (e.g., Cat 320, 325), wheel loaders (e.g., Cat 928G, 930G), and other heavy machinery.
On-Highway Trucks: Medium-duty trucks such as GMC TopKick, Chevrolet Kodiak, and Ford F-Series (F600-F750).
Industrial & Power Generation: Stationary generator sets, air compressors, and industrial pumps.
Marine Applications: Auxiliary power and propulsion for small commercial vessels and workboats.
Mechanical Fuel System: The engine utilizes a reliable Mechanical Unit Injection (MUI) system. Its (medium-pressure injector) operates between 40-120 MPa, known for durability and easier maintenance compared to modern electronic systems.
Durable Core Structure: Built with a cast-iron cylinder block and head, a forged steel crankshaft, and wet cylinder liners for exceptional longevity and ease of rebuild.
Turbocharged Performance: Most configurations are turbocharged and aftercooled, providing a strong power-to-weight ratio and responsive torque.
