Wacker Neuson 5002001815 Retaining Ring

The Wacker Neuson is a genuine OEM Retaining Ring designed for a broad range of Wacker Neuson walk-behind concrete power trowels and reversible vibratory plate compactors. This part covers CT30, CT36, and CT48 trowel series as well as DPU 2000–7000 series reversible plates, making it a widely applicable service component for contractors running mixed Wacker Neuson fleets. As a genuine OEM part, the is manufactured to the exact material and dimensional standards set by Wacker Neuson, ensuring proper retention and function within the assembly it secures. Keep a spare on hand — this small but critical part is a common service item across multiple machine families.

Key Features

• Genuine OEM Dimensional Accuracy — Manufactured to Wacker Neuson's exact groove-width and wire-diameter specifications, ensuring the ring seats and releases correctly without distorting the retaining groove.
• Direct-Fit Replacement — Installs into the existing groove with standard snap-ring pliers; no machining or modification to the shaft or housing needed.
• Broad Trowel Fitment — Compatible with CT30, CT36, and CT48 walk-behind concrete power trowel families across gas, diesel, and electric drive variants.
• Wide Compaction Equipment Coverage — Also fits DPU 2000 through DPU 7000 series reversible vibratory plate compactors, including DPU 4045H, DPU 5045H, DPU 5545, DPU 6055, and DPU 6555 models.
• Prevents Axial Component Movement — A failed or missing retaining ring allows shafts, bearings, or gears to shift axially, causing accelerated wear and potential component damage. Replacing it immediately restores correct component positioning.

A retaining ring — also called a snap ring — is a fastening device that seats into a machined groove on a shaft or inside a bore to prevent lateral movement of the components it secures, such as bearings, gears, or drive assemblies. Without a correctly seated retaining ring, the retained component can walk along the shaft under load, leading to misalignment, accelerated wear on surrounding parts, and eventual mechanical failure. Because retaining rings are subject to stress every time the assembly is serviced or a load shift occurs, they should be inspected at each service interval and replaced whenever distortion, corrosion, or loss of spring tension is observed.

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.