Caterpillar
No suggested results. Try again.

Select Store

Complete your tax details anytime right here.
Caterpillar
Complete your tax details anytime right here.

Select Store

For pricing & availability

Add Equipment

To find the parts that fit.

Search for part number or name

Select Store

Add Equipment

Complete your tax details anytime right here.
421-9723: Engine Overhaul (Top End) Kit
HomeUpgrade & Repair KitsRepair & Service KitsEnginesEngine Gasket Kits421-9723: Engine Overhaul (Top End) Kit

421-9723: Engine Overhaul (Top End) Kit

Marine Bundled Repair Solution, 3412 Engine Overhaul

Brand: Cat

421-9723: Engine Overhaul (Top End) Kit

Product Images

421-9723: Engine Overhaul (Top End) Kit

421-9723: Engine Overhaul (Top End) Kit

Marine Bundled Repair Solution, 3412 Engine Overhaul

Brand: Cat

Parts included in this kit

No results available.

106-1792: 100mm Long Taper Lock Steel Stud

Quantity: 28

1R-0749: Secondary Fuel Filter

Quantity: 2

1R-1808: Engine Oil Filter

Quantity: 2

219-6544: Aftercooler & Lines Install Gasket Kit

Quantity: 1

245-8342: 0.8mm Thick Square Gasket

Quantity: 1

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

Quantity: 24

305-6843: 21.08mm Inner Diameter Lifter Guide Spring

Quantity: 24

3D-2824: 2.95 x 23.47mm 90A NBR O-Ring

Quantity: 1

3E-6916: 3/8''-16 Hex Nut

Quantity: 4

419-8601: Single Cylinder Head Install Kit

Quantity: 2

419-9849: Fuel System Gasket Kit

Quantity: 1

420-8545: Oil Cooler and Lines Gasket Kit

Quantity: 1

4H-9541: 0.8mm Thick Exhaust Flange Gasket

Quantity: 1

4L-8337: 81mm Inner Diameter O-Ring Seal

Quantity: 2

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

Quantity: 2

8F-4994: 23.16mm Inside Diameter Seal-O-Ring

Quantity: 1

593-7750: Water Temperature Regulator

Quantity: 2

Showing 1 to 17 of 17

Description for part number 421-9723

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 421-9723

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

Compatible Models for part number 421-9723

GENERATOR

SR4

GENERATOR SET

3412C

Key

Key

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