CAT 230-2633 Rocker Arm Shaft

Product Overview

The CAT 230-2633 Rocker Arm Shaft is a Genuine Caterpillar OEM engine component designed to support the rocker arm assembly and facilitate smooth reciprocating motion within the engine valve train. The rocker arm shaft serves as the pivot point for the rocker arms, enabling them to accurately open and close the engine valves for proper intake of air and fuel and the expulsion of exhaust gases during the combustion cycle. Manufactured to Caterpillar’s exact engineering specifications, the 230-2633 Rocker Arm Shaft delivers the durability, reliability, and precision required for demanding heavy-duty engine applications.

As a Genuine Caterpillar OEM replacement part, the rocker arm shaft ensures proper fit, dependable valve train operation, and long service life while maintaining original engine performance.

Key Features

• Genuine Caterpillar OEM Rocker Arm Shaft
• Part Number: 230-2633
• Supports rocker arm movement within the valve train
• Provides a precision pivot surface for rocker arms
• Promotes accurate valve timing and smooth valve operation
• Manufactured to Caterpillar OEM specifications
• Designed for durability, reliability, productivity, and extended service life
• Direct OEM replacement for Caterpillar engine applications
• Engineered for demanding industrial, marine, mining, and power generation environments

Technical Specifications

Note: Caterpillar has not published additional specifications such as shaft diameter, material composition, surface finish, weight, or lubrication details for the CAT 230-2633 Rocker Arm Shaft.

Application Information

The CAT 230-2633 Rocker Arm Shaft is an essential component of the engine valve train. It provides the mounting surface and pivot axis for the rocker arms, allowing precise transfer of motion from the camshaft and pushrods to the intake and exhaust valves. Proper rocker arm shaft operation is critical for maintaining accurate valve timing, efficient combustion, engine power, fuel efficiency, and long-term engine reliability.

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

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

These characteristics help ensure smooth valve operation and extend engine service life.

Compatible Caterpillar Equipment

The CAT 230-2633 Rocker Arm Shaft is compatible with a wide range of Caterpillar equipment, including:

Engines

• 3512B
• 3512C
• 3512E
• 3516B
• 3516C
• 3516E
• 3508B
• 3508C
• C4.4

Industrial Engines

• 3512B
• 3512C
• 3512E
• 3508B
• 3516B
• 3516C

Marine Engines

• 3508
• 3508B
• 3508C
• 3512
• 3512B
• 3512C
• 3512E
• 3516
• 3516B
• 3516C
• 3516E

Marine Auxiliary Engines

• 3508B
• 3508C
• 3512
• 3512B
• 3512C
• 3516B
• 3516C

Generator Sets

• 3508
• 3508B
• 3512B
• 3512C
• 3516B
• 3516C
• 3516E
• SR5

Power Modules

• PM3508
• PM3512
• PM3516
• PP3516
• XQ2280
• XQC1200
• XQC1600

Track-Type Tractors

• D11N
• D11R

Off-Highway Trucks

• 785
• 785D
• 789
• 789D
• 789G
• 793
• 793D

Wheel Loaders

• 992G
• 994D
• 994F
• 994H
• 994K
• 995

Wheel Dozers

• 854G

Hydraulic Shovels

• 6060

Mining Excavators

• 5130B
• 5230B

Rotary Drills

• MD6380
• MD6540C

Rotary Cutter

• RC20

Pumpers

• SPF343
• SPF343C
• SPF743
• SPS343
• SPT343

Petroleum Engines

• 2016
• 3508B
• 3508C
• 3512B
• 3512C
• 3512E
• 3516B
• 3516C

Petroleum Packages

• TH48-E70

Petroleum Transmissions

• TH48-E80

Locomotive Engines

• 3508B
• 3508C
• 3512B
• 3512C
• 3512E
• 3516B
• 3516C

Reman Engines

• 3516B

Compatibility should always be verified using the machine’s Product Identification Number (PIN), Engine Serial Number, Arrangement Number, or the existing part number before ordering.

Additional Compatibility Information

The 230-2633 Rocker Arm Shaft 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 shaft part number
• Cylinder head configuration
• 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 230-2633 Rocker Arm Shaft helps:

• Restore proper valve train operation
• Maintain accurate valve timing
• Support smooth rocker arm movement
• Improve engine reliability and efficiency
• 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 operating environments.