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HomeUpgrade & Repair KitsRepair & Service KitsEnginesGeneral Engine Repair & Service Kits421-9728: Top End Engine Overhaul Kit
HomeUpgrade & Repair KitsRepair & Service KitsEnginesGeneral Engine Repair & Service Kits421-9728: Top End Engine Overhaul Kit

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4H-9541: 0.8mm Thick Exhaust Flange Gasket

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5S-1188: 88.26mm Inside Diameter Seal-O-Ring

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2N-2766: 3/8''-16 Cone Lock Nut

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420-4426: Fuel System Gasket Kit

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1R-0749: Secondary Fuel Filter

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DescriptionSpecificationsCompatible Models

Description for part number 421-9728

Containing all the basics for your best top end overhaul, our Foundational Level Kit is designed for convenience - prepackaged, ordered with a single part number and delivered in a single box. Includes all gaskets and seals required for a complete top end overhaul and many 100% replacement items, ranging from thermostats to gear bushings.

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 421-9728

We are still working on adding a specification for this part.

Compatible Models for part number 421-9728

MARINE ENGINE

3412E

Key

Key

Factory Fit

This part is designed to fit your Cat equipment based on the manufacturerā€™s specifications.

Any changes to the manufacturerā€™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