5I8426 O-Ring Seal for Caterpillar Equipment

The 5I8426 is an O-ring seal used in Caterpillar equipment, including listed Caterpillar engine, machine, and excavator applications. This is a new aftermarket spare part manufactured by CTP (Costex Tractor Parts).

The part is identified as a sealing component for the Caterpillar models and engine series specified below. The supplied application data includes both Caterpillar engine designations and Caterpillar excavator model designations; the exact installation position is not specified in the available data.

Fitment

The 5I8426 O-ring seal is listed for the following Caterpillar equipment models and engine series:

• Caterpillar 3066
• Caterpillar 3116
• Caterpillar 3176C
• Caterpillar C4.2
• Caterpillar C6
• Caterpillar C6.4
• Caterpillar 318C
• Caterpillar 319C
• Caterpillar 319D
• Caterpillar 319D L

The available fitment information covers Caterpillar engine and machine applications as well as Caterpillar excavator applications. Model compatibility should be checked against the equipment serial number and the part number being replaced before installation, because the supplied data does not include serial-number ranges or production years.

Cross-reference numbers

The following number is associated with this O-ring seal in the available parts data:

• Caterpillar equipment manufacturer reference number: 5I8426
• CTP part number: 5I8426

The Caterpillar reference identifies the applicable equipment part number. The CTP part number uses the same numeric designation for this aftermarket O-ring seal. No additional supplier numbers or separate superseding numbers are provided in the available information.

Specifications

The listed dimensions and weight are provided as product specifications. The available data does not state the O-ring cross-section, internal diameter, outside diameter, material compound, hardness, temperature range, or installation position. These parameters are therefore not specified for this part description.