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HomeEngineEngine ComponentsCylinder Heads & ComponentsCylinder Head Components255-8666: Insert-Valve Seat
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EngineEngine ComponentsCylinder Heads & ComponentsCylinder Head Components
255-8666: Insert-Valve Seat
255-8666: Insert-Valve Seat

Cat® Valve Seat Insert (Intake)

Brand: Cat

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255-8666: Insert-Valve Seat
255-8666: Insert-Valve Seat
255-8666: Insert-Valve Seat
255-8666: Insert-Valve Seat
255-8666: Insert-Valve Seat

Cat® Valve Seat Insert (Intake)

Brand: Cat

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DiagramDescriptionSpecificationsCompatible Models
Parts diagram for 255-8666
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Specifications for part number 255-8666

Units of Measure

USMetric
Outside Diameter (mm): 42.6
Height (mm): 5.6
Material: Alloy Steel
Inside Diameter (mm): 36.5
Inside Diameter (in): 1.44
Height (in): 0.22
Outside Diameter (in): 1.68
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Time for maintenance?

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Complete maintenance kits available by equipment type including 250, 500, and 1,000-hour intervals.

Compatible Models for part number 255-8666

GENERATOR

SR4B

GENERATOR SET

C9.3

WHEEL TRACTOR

627H 637K

TRUCK ENGINE

C9 C-9

WHEEL TRACTOR-SCRAPER

627K 627K LRC 637K

SITE PREP TRACTOR

2864C 586C

MOTOR GRADER

12M 3 12M 2 160M 2 160M 3 140M 3 AWD 12M 3 AWD 160M 3 AWD 140M 3 140M 2

WHEEL LOADER

972K 972M 972L 966K XE 966L 966K 966M

TRACK-TYPE TRACTOR

D6T XW D6T LGP D6T XL D6T LGPPAT D6T XL PAT D6T XW PAT D6T D7E LGP D7E

ARTICULATED TRUCK

725C 725C2

MARINE ENGINE

C9.3

PIPELAYER

PL72

INDUSTRIAL ENGINE

C9.3

WHEEL SCRAPER

637K

EXCAVATOR

336E LN 340F 336E LH 336F LNXE 340F L LRE 336E 336F 336F LN XE 336F LN 336F L 568 FM LL 336F XE 336F L XE 568 FM 336E LNH 336E L 336E H

MOBILE HYD POWER UNIT

336F 336E 336E HVG

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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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