158-8986 Hydraulic Swing Motor for CAT 320C 320D 321C 321D 323D Excavator

Aftermarket 158-8986 swing motor for selected CAT 320C, 321C, 320D, 321D and 323D excavators. Verify part number, motor tag and machine model before ordering.

Function & Typical Symptoms

Hydraulic Swing Motor is used in the upper structure swing system of the excavator. Common symptoms of a worn swing motor include weak swing force, unstable rotation, internal leakage, abnormal noise and slow response.

Part Numbers & Fitment Notes

Reference Numbers: 158-8985; 191-5542; 334-9968; 20R-0075; 20R-1757

Application: CAT 320C, 321C, 320D, 321D, 323D, 320D L excavators

Reference numbers commonly listed in the reviewed sources include 158-8985; 191-5542; 334-9968; 20R-0075; 20R-1757.

Fitment is based on the reviewed public references and should still be confirmed by the removed unit tag.

Before Ordering

To reduce ordering mistakes, please confirm the removed unit tag, complete part number, machine model, tooth count, flange pattern and hydraulic port layout before purchase.

Quality Control & Supply

This page is written for an aftermarket replacement part. OEM numbers and model names are used for identification and fitment reference only. For quotation, please send the part number, machine model and clear photos of the motor tag or removed unit.

Packaging & Shipping

MOQ: 1 piece. Export packing can be arranged for courier, air freight or sea shipment according to your order quantity and destination.