Multiquip 17421 Rear Wear Ring Shim Pack

The Multiquip 17421 Rear Wear Ring Shim Pack is a genuine OEM component designed for DLW400ES, DLW400ESA, and DLW400ESA1 series diesel light welders. As a direct OEM replacement sourced through Multiquip's authorized parts network, this shim pack ensures tolerances are restored to original specification without guesswork or makeshift shimming. Confirm your model code against the fitment list before ordering to ensure this pack matches your machine's rear wear ring configuration.

Key Features

• Genuine OEM Shimming Precision — Manufactured to exact Multiquip tolerances, ensuring the rear wear ring seats and loads correctly — critical for consistent pump or drive alignment in welder service applications.
• Direct Drop-In Fit — Engineered to install into the same rear wear ring pocket as the original, with no machining or custom fitting required to achieve proper stack height.
• Confirmed Fitment for DLW400ES Series — Verified for DLW400ES, DLW400ESA, and DLW400ESA1 diesel light welder models, so you order with confidence.
• Restore Correct Axial Clearance — Worn or missing shims allow excessive play at the rear wear ring, leading to premature wear, vibration, and uneven loading. This pack brings clearances back into spec.
• Complete Shim Set — Supplied as a full pack, giving you the range of shim thicknesses needed to dial in the correct fit during reassembly rather than sourcing individual pieces separately.

A rear wear ring shim pack controls the axial clearance between the wear ring and the rotating assembly it supports. Shims of precise thickness are stacked during assembly to achieve the correct running gap — too much clearance causes vibration and accelerated wear, while too little can cause binding or overheating. Over time, shims can compress, deform, or be lost during service, and replacing them with a correctly specified OEM pack is the most reliable way to restore the assembly to its original operating condition.

For fitment questions or to confirm compatibility with your specific DLW400ES unit, contact the DHS Equipment parts team directly.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.