Wacker Neuson 5100044386 Washer — Genuine OEM Replacement

The Wacker Neuson Washer is a genuine OEM component designed for the PT3A, PT4A, PT3A(I), and PT4A(I) series trash pumps. Sourced directly through Wacker Neuson's authorized parts program, this washer carries the exact geometry and material specification as the original hardware installed at the factory. Confirmed fitment spans both standard and international variants across the PT3A and PT4A model families, making it a straightforward drop-in solution for scheduled maintenance or field repairs.

Key Features

• Genuine OEM Hardware Consistency — Manufactured to the same dimensional tolerances as the original washer, ensuring proper load distribution and clamp force at the fastened joint.
• Direct Bolt-In Replacement — Matches the bore diameter, outer diameter, and thickness of the factory washer so it seats correctly without reworking the mounting surface.
• Broad PT-Series Coverage — Verified for PT3A, PT4A, PT3A(I), and PT4A(I) trash pumps across multiple build configurations and serial ranges.
• Protects Mating Surfaces — A correctly sized washer spreads fastener load evenly, preventing surface damage, bolt pull-through, and loosening under pump vibration.
• Authentic Parts Traceability — Carrying OEM part number 5100044386, this washer is fully traceable through Wacker Neuson's authorized supply chain for accurate record-keeping.

A washer serves as a load-distributing interface between a fastener and the surface it secures. By spreading clamping force across a wider area, it prevents the bolt head or nut from digging into softer material, maintains consistent joint tension, and reduces the risk of loosening caused by vibration — a common stress in pump applications. When a washer wears thin, deforms, or goes missing entirely, the fastened connection can work loose over time, leading to component misalignment or accelerated wear on surrounding hardware.

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.