CAT 4N-5614 Rocker Arm Assembly

Product Overview

The CAT 4N-5614 Rocker Arm Assembly is a Genuine Caterpillar OEM engine valve train component designed to transfer motion from the camshaft, through the pushrod, to the engine valves. The rocker arm opens and closes the intake and exhaust valves, allowing the proper flow of air and fuel into the combustion chamber and the expulsion of exhaust gases during the engine cycle. Manufactured to Caterpillar’s exact engineering specifications, the 4N-5614 Rocker Arm Assembly delivers reliable valve train operation, durability, and long service life in demanding heavy-duty applications.

As a Genuine Caterpillar OEM replacement part, the rocker arm provides OEM-quality fit and function, helping restore original engine performance and dependable valve timing. A Cat® Reman alternative is available under part number 20R-6263.

Key Features

• Genuine Caterpillar OEM Rocker Arm Assembly
• Part Number: 4N-5614
• Transfers camshaft motion to the engine valves
• Supports accurate valve timing and valve operation
• Manufactured to Caterpillar OEM specifications
• Direct OEM replacement
• Built for durability, reliability, and long service life
• Suitable for demanding industrial, marine, mining, and power generation applications
• Cat® Reman alternative available: 20R-6263 Valve Rocker Arm

Technical Specifications

Note: Caterpillar has not published additional specifications such as material composition, weight, rocker ratio, shaft diameter, or operating clearances for the CAT 4N-5614 Rocker Arm Assembly.

Application Information

The CAT 4N-5614 Rocker Arm Assembly is a critical component of the engine valve train. Operated by the pushrod from the camshaft, the rocker arm converts reciprocating motion into valve movement, opening and closing the intake and exhaust valves with precise timing. Proper rocker arm operation is essential for efficient combustion, engine power, fuel economy, emissions performance, and long-term engine reliability.

Manufactured to Caterpillar OEM standards, the rocker arm is designed to withstand:

• Continuous valve train loading
• High engine operating temperatures
• Constant lubrication exposure
• Heavy-duty industrial and mining service
• Marine and power generation operating environments

Compatible Caterpillar Equipment

The CAT 4N-5614 Rocker Arm Assembly is compatible with the following Caterpillar equipment:

Truck Engines

• 3406
• 3406B
• 3406C
• 3408
• 3408B

Marine Engines

• 3406
• 3406B
• 3406C
• 3408
• 3408B
• 3408C
• 3412
• 3412C
• 3412D
• 3412E
• C30
• C32

Generator Sets

• 3406C
• 3408C
• 3412
• 3412C

Generators

• SR500
• SR4
• SR4B
• WEG SR4

Power Modules

• PM3412

Underground Articulated Trucks

• AD40
• AD45
• AE40
• AE40 II

Off-Highway Trucks

• 773

Track-Type Tractors

• D7G
• D8 GC
• D8GC
• D8L
• D8N
• D8R
• D8R II
• D9 GC
• D9L
• D9N
• D9R
• D10N
• D10R

Pipelayers

• 578
• 583R
• 587R
• 589

Excavators

• 245
• 245B
• 245D
• 375-A
• 375-A L

Front Shovel

• 5080

Mining Excavators

• 5110B

Motor Graders

• 16G
• 16H
• 24H

Wheel Tractors

• 621

OEM Solutions

• 3412C

Pumpers

• HT400
• SCT673
• SPS342
• SPT342

Winches

• 57H
• 58
• 58L
• 59
• 59L
• 59N

Stabilizer Mixers

• SM-350

Compatibility should always be verified using the machine’s:

• Product Identification Number (PIN)
• Engine Serial Number
• Arrangement Number
• Existing rocker arm part number

before ordering.

Additional Compatibility Information

The 4N-5614 Rocker Arm Assembly is a configuration-specific valve train component. Before installation, verify:

• Engine model
• Engine serial number
• Product Identification Number (PIN)
• Engine arrangement number
• Existing rocker arm part number
• Valve train configuration

Any modifications to the original engine configuration may affect compatibility. Verification through Caterpillar Parts information or an authorized Cat dealer is recommended before installation.

Benefits

Installing a genuine CAT 4N-5614 Rocker Arm Assembly helps:

• Restore proper valve train operation
• Maintain accurate valve timing
• Improve combustion efficiency
• Support reliable engine performance
• Reduce valve train wear
• Minimize downtime with a direct OEM replacement
• Preserve factory engine performance
• Deliver OEM-quality fit, durability, and long-lasting reliability in demanding heavy-duty applications.