Commercial 391-3681-001 Pump, Motor And Valve Kit

Commercial 391-3681-001 Pump, Motor And Valve 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 CM-391-3681-001. Catalog description: M1391K (ball valve 7/16in-20thd).

Product Details

• Hercules part number: CM-391-3681-001
• Product type: Pump, motor, valve, or hydraulic repair kit
• Reference brand/application: Parker/Commercial Intertech
• Approximate weight: 0.027 lb
• Catalog data source: 2026 US Mobile Kit Catalog, 2026 Pump, Motor, and Valve Repair Kits

Catalog Application Data

• Catalog section: Standard Series Pump Parts > P20/30/31 SERIES; P50/51 SERIES; G101 / G102 PARTS BREAKDOWN; P20 PARTS BREAKDOWN; Gasket Seals > P30 PARTS BREAKDOWN; P31 PARTS BREAKDOWN; P50 PARTS BREAKDOWN
• Equipment type: Excavators
• Model or series reference: T1391; P75/76, T1391
• Material / grade reference: Seal
• Catalog page reference: 1202, 1203, 1204, 1205, 1206, 12, 13, 14, 15, 16

Use this product when your parts book, service manual, cylinder repair list, pump/motor breakdown, or existing component calls for CM-391-3681-001. 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 CM-391-3681-001 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.