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HomeEngineEngine ComponentsCylinder Heads & ComponentsCylinder Head Components258-8721: 18mm Outer Diameter Rocker Arm Button
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EngineEngine ComponentsCylinder Heads & ComponentsCylinder Head Components258-8721: 18mm Outer Diameter Rocker Arm Button
258-8721: 18mm Outer Diameter Rocker Arm Button
Cat® Basic Engine Rocker Arm Button provides smooth contact between the rocker arm and the valve stem, allowing for efficient valve actuation
Brand: Cat
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258-8721: 18mm Outer Diameter Rocker Arm Button
Cat® Basic Engine Rocker Arm Button provides smooth contact between the rocker arm and the valve stem, allowing for efficient valve actuation
Brand: Cat
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Warranty Information
Warranty Information
Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.
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Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.
Need More Help? Contact Us
Find a DealerEmail
Description
Description
Description:
Inserts are important components of rocker arms, which open and close valves to allow fuel and air in and exhaust out of the combustion chamber
Attributes:
Cat® parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse
Warning:This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Description:
Inserts are important components of rocker arms, which open and close valves to allow fuel and air in and exhaust out of the combustion chamber
Attributes:
Cat® parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse
Warning:This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications
Specifications
Units of MeasureUSMetric
Width (mm): 101.6
Height (mm): 12.7
Length (in): 4
Material: Low Alloy Steel,Alloy Steel
Length (mm): 101.6
Height (in): 0.5
Units of MeasureUSMetric
Width (mm): 101.6
Height (mm): 12.7
Length (in): 4
View More
Compatible Models
Compatible Models
Pumper
CPT372
Generator Set
C32
Wheel Tractor
637E631E
Truck Engine
C-103406EC-15C11C13C15C18
Power Module
PM3456
Petroleum Engine
C32
Load Haul Dump
R1600R1700GR2900R1700 II
Motor Grader
18
Wheel Loader
980 XE980966H972H980H982 XE
Engine - Machine
3176C
Gen Set Engine
3406E3456
Marine Engine
C18C12C153406E
Industrial Engine
C13C153176C34563406E
Wheel Scraper
657657B
View More
Pumper
CPT372
Warranty Information
Warranty Information
Generally, warranty for parts purchased on Parts.Cat.Com is 12 months from the invoice date as defined in the Caterpillar Limited Warranty. Parts Warranty covers defects in material and workmanship throughout the Warranty period once it has been installed. For complete Warranty detail contact your local Cat Dealer.
Need More Help? Contact Us
Find a DealerEmail
Return Policy
Return Policy Information
Unless otherwise noted by a non-returnable part
icon, most parts can be returned to your authorized Cat® dealer under their return policy.
Need More Help? Contact Us
Find a DealerEmail
Parts diagram for 258-8721
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DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 258-8721
View Detailed Parts Diagrams
Add Your Equipment
Description for part number 258-8721
Description:
Inserts are important components of rocker arms, which open and close valves to allow fuel and air in and exhaust out of the combustion chamber
Attributes:
Cat® parts are manufactured to precise specifications and are built for durability, reliability, productivity, less environmental impact, and reuse
View More
Warning:This product can expose you to chemicals including Lead and lead compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Specifications for part number 258-8721
Units of Measure
USMetric
Width (mm): 101.6
Height (mm): 12.7
Length (in): 4
Material: Low Alloy Steel,Alloy Steel
Length (mm): 101.6
Height (in): 0.5
View More
Compatible Models for part number 258-8721
PUMPER
CPT372
GENERATOR SET
C32
WHEEL TRACTOR
637E 631E
TRUCK ENGINE
C-10 3406E C-15 C11 C13 C15 C18
POWER MODULE
PM3456
PETROLEUM ENGINE
C32
LOAD HAUL DUMP
R1600 R1700G R2900 R1700 II
MOTOR GRADER
18
WHEEL LOADER
980 XE 980 966H 972H 980H 982 XE
ENGINE - MACHINE
3176C
GEN SET ENGINE
3406E 3456
MARINE ENGINE
C18 C12 C15 3406E
INDUSTRIAL ENGINE
C13 C15 3176C 3456 3406E
WHEEL SCRAPER
657 657B
View More
KeyKey
Factory Fit
This part is designed to fit your Cat equipment based on the manufacturer’s specifications.
Any changes to the manufacturer’s configuration might result in the product not fitting your Cat equipment. Please consult your Cat Dealer before purchasing to ensure that this part is appropriate for your Cat equipment in its current condition and assumed configuration. This indicator cannot guarantee compatibility for all parts.
Remanufactured
Non-Returnable
Kit
Replaced
Remanufactured
Non-Returnable
Kit
Replaced
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