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HomeUpgrade & Repair KitsRepair & Service KitsEnginesGeneral Engine Repair & Service Kits421-9722: Top End Engine Overhaul Kit
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Upgrade & Repair KitsRepair & Service KitsEnginesGeneral Engine Repair & Service Kits
421-9722: Top End Engine Overhaul Kit
421-9722: Top End Engine Overhaul Kit

TOP END OVERHAUL KIT FOR THE 3412 MARINE ENGINE.

Brand: Cat

Product Images
Aftercooler & Lines Install Gasket Kit
GASKET (F) KIT
3/8 - 16 Thread High-Temperature Taperlock Stud
3/8''-16 Cone Lock Nut
3/8''-16 Hex Nut
2.95 x 23.47mm 90A NBR O-Ring
100mm Long Taper Lock Steel Stud
0.8mm Thick Square Gasket
Oil Cooler and Lines Gasket Kit
Expansion Tank Install Gasket Kit
23.16mm Inside Diameter Seal-O-Ring
81mm Inner Diameter O-Ring Seal
Engine Water Temperature Regulator
Secondary Fuel Filter
0.8mm Thick Exhaust Flange Gasket
Single Cylinder Head Install Kit
21.08mm Inner Diameter Lifter Guide Spring
88.26mm Inside Diameter Seal-O-Ring
Engine Oil Filter
421-9722: Top End Engine Overhaul Kit

TOP END OVERHAUL KIT FOR THE 3412 MARINE ENGINE.

Brand: Cat

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Items included

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219-6544: Aftercooler & Lines Install Gasket Kit
219-6544: Aftercooler & Lines Install Gasket KitQuantity: 1
421-1305: GASKET (F) KIT
421-1305: GASKET (F) KITQuantity: 1
516-5987: 3/8 - 16 Thread High-Temperature Taperlock Stud
516-5987: 3/8 - 16 Thread High-Temperature Taperlock StudQuantity: 4
2N-2766: 3/8''-16 Cone Lock Nut
2N-2766: 3/8''-16 Cone Lock NutQuantity: 24
3E-6916: 3/8''-16 Hex Nut
3E-6916: 3/8''-16 Hex NutQuantity: 4
3D-2824: 2.95 x 23.47mm 90A NBR O-Ring
3D-2824: 2.95 x 23.47mm 90A NBR O-RingQuantity: 1
106-1792: 100mm Long Taper Lock Steel Stud
106-1792: 100mm Long Taper Lock Steel StudQuantity: 24
245-8342: 0.8mm Thick Square Gasket
245-8342: 0.8mm Thick Square GasketQuantity: 1
421-8976: Oil Cooler and Lines Gasket Kit
421-8976: Oil Cooler and Lines Gasket KitQuantity: 1
6V-0237: Expansion Tank Install Gasket Kit
6V-0237: Expansion Tank Install Gasket KitQuantity: 1
8F-4994: 23.16mm Inside Diameter Seal-O-Ring
8F-4994: 23.16mm Inside Diameter Seal-O-RingQuantity: 1
4L-8337: 81mm Inner Diameter O-Ring Seal
4L-8337: 81mm Inner Diameter O-Ring SealQuantity: 2
248-5513: Engine Water Temperature Regulator
248-5513: Engine Water Temperature RegulatorQuantity: 2
1R-0749: Secondary Fuel Filter
1R-0749: Secondary Fuel FilterQuantity: 2
4H-9541: 0.8mm Thick Exhaust Flange Gasket
4H-9541: 0.8mm Thick Exhaust Flange GasketQuantity: 1
419-8601: Single Cylinder Head Install Kit
419-8601: Single Cylinder Head Install KitQuantity: 2
305-6843: 21.08mm Inner Diameter Lifter Guide Spring
305-6843: 21.08mm Inner Diameter Lifter Guide SpringQuantity: 24
5S-1188: 88.26mm Inside Diameter Seal-O-Ring
5S-1188: 88.26mm Inside Diameter Seal-O-RingQuantity: 2
1R-1808: Engine Oil Filter
1R-1808: Engine Oil FilterQuantity: 2
Showing 1 to 19 of 19
DescriptionSpecificationsCompatible Models
Specifications for part number 421-9722

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

Compatible Models for part number 421-9722

MARINE ENGINE

3412

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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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