Milwaukee 01521-7-40 Cylinder Repair Kit

Milwaukee 01521-7-40 Cylinder Repair 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 MIL-01521-7-40. Catalog description: SK-I-V-5 12-1.375x2.500.

Product Details

• Hercules part number: MIL-01521-7-40
• Product type: Replacement cylinder or cylinder repair component
• Reference brand/application: Milwaukee
• Approximate weight: 0.131 lb
• Catalog data source: 2026 US Industrial Catalog

Catalog Application Data

• Catalog page reference: 99

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for MIL-01521-7-40. 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 MIL-01521-7-40 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.