Parts For Caterpillar 3114

Engine Specifications & Applications of the Caterpillar 3114 Engine

Introduction to the Caterpillar 3114 Engine

The Caterpillar 3114 is a mid-displacement, four-cylinder diesel engine renowned for its durability, mechanical simplicity, and versatility in off-highway equipment. Built as part of Caterpillar’s 3100 engine series, the 3114 was primarily used in construction, agriculture, and industrial applications where mid-range horsepower and high torque were required in a compact footprint.

Unlike many modern electronically controlled engines, the 3114 is a purely mechanical engine—making it ideal for operators who prioritize serviceability and reliability in harsh conditions. With its heavy-duty components and straightforward fuel system, the Caterpillar 3114 remains a go-to option in the aftermarket for equipment rebuilds, repairs, and part replacements.

Diesel Pro Power offers extensive aftermarket support for the Cat 3114, including rebuilt and new components that meet or exceed OEM standards.

Caterpillar 3114 Engine Technical Specifications

Base Engine Configuration

Specification	Detail
Engine Model	Caterpillar 3114
Engine Type	Inline 4-Cylinder, 4-Stroke Diesel
Displacement	6.6 Liters (403 cubic inches)
Bore x Stroke	105 mm x 127 mm (4.13" x 5.0")
Compression Ratio	17.5:1 to 18.5:1
Aspiration	Naturally Aspirated or Turbocharged
Fuel System	Direct Injection, Mechanically Controlled
Cooling System	Water-Cooled
Engine Weight (dry)	Approx. 900–1,100 lbs (varies by setup)
Flywheel Rotation	Counterclockwise (viewed from flywheel)

Power & Torque Output

Configuration	Output Range
Naturally Aspirated	90 – 105 HP @ 2200 RPM
Turbocharged	110 – 130 HP @ 2200 RPM
Max Torque	Up to 375 lb-ft @ 1400–1600 RPM

Note: Actual power ratings vary based on application and tuning. Some marine or stationary versions may be rated differently for duty cycle and emissions standards.

Caterpillar 3114 Engine Variants and Features

The 3114 engine was developed with modularity in mind. Key variations include:

Naturally Aspirated Version: Simpler configuration, popular in loader and backhoe models.
Turbocharged Version: Used in applications requiring more power and altitude compensation.
Industrial Packaged Versions: Factory-configured for gensets, compressors, and stationary pumps.

Many core components such as pistons, liners, fuel injection parts, and crankshafts are shared between the 3114 and other 3100 series engines like the 3116. However, the 3114 is strictly a 4-cylinder platform, whereas the 3116 and 3126 are inline-6 configurations.

Diesel Pro Power supports both standard and turbocharged 3114 versions with compatible parts such as turbochargers, injectors, water pumps, oil pumps, and rebuild kits.

Applications of the Caterpillar 3114 Engine

The Caterpillar 3114 engine has been deployed across a wide range of equipment due to its balance of compact design, mid-range torque, and excellent field serviceability. Its applications span construction, agriculture, industrial, and marine auxiliary systems.

Construction Equipment

The 3114 engine powers a broad range of Caterpillar machines, especially those from the 1990s and early 2000s. These include:

Wheel Loaders: Cat 924, 926, and similar mid-sized loaders
Backhoe Loaders: Cat 446 and 436 series
Track-Type Loaders: Models like the Cat 933 and 943
Skid Steer Loaders: Select older models with hydraulic demand
Small Excavators: Compact and mid-size units requiring rugged, low-maintenance engines

Agricultural Equipment

Due to its reliability and low-RPM torque, the Cat 3114 is a good fit for:

Tractors and Tow Units: Ideal for mid-power utility tractors
Grain Augers and Conveyors
Harvesting Machinery: Mechanically simple units operating in dusty, remote fields
Irrigation Pumps: Continuous-duty cycles benefit from the engine’s steady fuel consumption

Diesel Pro Power offers common maintenance items such as gasket sets, filters, and fuel system components to keep agricultural 3114-powered equipment running smoothly.

Industrial and Stationary Applications

The 3114 has been used extensively in fixed-installation equipment and mobile industrial units, including:

Power Generation Units (Gensets): Output ranges from 60 kW to 100 kW
Air Compressors: Used in remote job sites and large facility air systems
Hydraulic Power Packs: For industrial tooling or heavy lifting operations
Oilfield Equipment: Mud pumps and winches in remote or off-grid locations

Because of its mechanical injection system and straightforward design, the 3114 is easy to support without advanced diagnostic tools—making it perfect for field installations.

Marine Auxiliary Use

The Cat 3114 engine also sees use in marine environments—mainly for auxiliary and support functions rather than propulsion. Typical marine applications include:

Marine Generators
Hydraulic Systems
Bilge or Fire Pumps
Crane or Winch Drives

Marine variants may include freshwater cooling via heat exchanger or keel-cooled configurations. Diesel Pro Power carries water pumps, fuel system parts, and other marine-compatible components for these configurations.