Caterpillar 3E8877 Seal Kit

Caterpillar 3E8877 Seal Kit is a Hercules catalog product available from WQC Parts for hydraulic cylinder, seal kit, pump, motor, valve, and heavy-equipment repair applications.

This listing uses Hercules part number CTC-3E8877. Catalog description: 2-3/8 X 4-1/2.

Product Details

• Hercules part number: CTC-3E8877
• Product type: Hydraulic cylinder seal kit
• Reference brand/application: Caterpillar
• Approximate weight: 0.33 lb
• Catalog data source: 2026 US Mobile Kit Catalog, 2026 US Cylinder Catalog

Catalog Application Data

• Application reference: Boom, Cylinder
• Equipment type: Backhoe Loaders; Telehandlers; Backhoe
• Model or series reference: 416B, 416C, 1784, 79
• Style / kit type: CTC-3E8877
• Catalog page reference: 103, 104, 121, 122, 132, 507, 15

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CTC-3E8877. It is intended to help restore sealing performance, reduce leakage, and support reliable equipment repair when correctly matched to the application.

Fitment Verification

Before ordering, confirm the CTC-3E8877 reference against your OEM reference number, machine model, cylinder location, bore and rod size, pump/motor series, and serial-number range. Manufacturer names and part numbers are used for identification and fitment reference only. If you are unsure, compare the old parts, measurements, and parts-book callout before installation.