The Wacker Neuson Washer is a genuine OEM component designed for the GP3800A, GP5600A, GP6600A portable generators and the PT4A and PT4A(I) self-priming centrifugal trash pumps. As a factory-sourced part, it meets the exact dimensional and material standards set during original assembly, ensuring a correct, secure fit without guesswork. This washer is confirmed across multiple unit configurations within these product families, making it a reliable choice when servicing any of the listed models. Keep a spare on hand to minimize disruption during routine maintenance or repair.
Key Features
- Genuine OEM Material Spec — Sourced directly from Wacker Neuson, this washer meets the exact thickness, inner diameter, and material grade specified for the original assembly.
- Drop-In Fit for Listed Models — Engineered to seat correctly in the hardware stack of the GP and PT series, eliminating the need to measure or trial-fit substitute hardware.
- Broad Cross-Family Compatibility — A single part number confirmed across the GP3800A, GP5600A, GP6600A generators and PT4A and PT4A(I) trash pumps, covering a wide range of common service needs.
- Maintains Clamping Integrity — A worn or undersized washer can lead to uneven load distribution, loosening fasteners, and potential leaks or structural movement; the correct OEM washer preserves proper clamping force.
- Supports Scheduled Maintenance — Replacing worn hardware with genuine parts during routine service intervals helps preserve torque retention and connection security across both generator and pump applications.
A washer serves as a load-distributing element placed under a bolt head or nut to spread clamping force evenly across a joint surface. By preventing fastener pull-through and reducing surface damage, it helps maintain the integrity of the connection throughout the machine's service life. When a washer wears thin, deforms, or is replaced with an incorrect size, the fastener can lose proper torque, leading to vibration-related loosening, fluid leaks, or component misalignment — particularly problematic in high-vibration equipment like trash pumps and portable generators.
Part Details
| Part Number | 1000133835 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GP3800A | GP3800A | 5100041978 |
| GP5600A | GP5600A | 5100041979 |
| PT4A | PT4A | 5100042217, 5100042604 |
| GP6600A | GP6600A | 5100042220 |
| PT4A(I) | PT4A(I) | 5100042615 |
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.
