Caterpillar 2138433 Seal Kit

Caterpillar 2138433 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-2138433. Catalog description: OK-CHECK VALVE KIT.

Product Details

• Hercules part number: CTC-2138433
• Product type: Pump, motor, valve, or hydraulic repair kit
• Reference brand/application: Caterpillar
• Approximate weight: 0.004 lb
• Catalog data source: 2026 US Mobile Kit Catalog

Catalog Application Data

• Equipment type: Excavators; Loaders - Wheel; Telehandlers
• Catalog page reference: 205, 210, 228, 250, 251, 260, 267, 268, 269, 270, 271, 272, 279, 283, 287, 288, 289, 407, 410, 411, 412, 41...

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CTC-2138433. 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-2138433 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.