The Wacker Neuson Washer is a genuine OEM component designed for the E1250 and HSH380 series hydronic surface heaters. Sourced directly from Wacker Neuson, this washer delivers the exact material grade, dimensional tolerancing, and surface finish specified for these units — ensuring proper load distribution and a secure, leak-free assembly. It is confirmed to fit the E1250S, E1250P, and E1250B series as well as HSH380S and HSH380B models across diesel, natural gas, and propane configurations. Keeping the correct hardware in place is a straightforward step that protects the integrity of the broader assembly and keeps your heater performing at full output.
Key Features
- OEM-Spec Material and Tolerancing — Manufactured to Wacker Neuson's exact dimensional and material specifications, ensuring the washer seats correctly and maintains the clamping load required in hydronic heater assemblies.
- Drop-In Hardware Replacement — Matches the original fastener stack-up precisely, so it installs without modification alongside existing hardware in the assembly.
- Broad E1250 and HSH380 Series Coverage — Fits E1250S, E1250P, and E1250B variants plus HSH380S and HSH380B models, spanning diesel, LP, and natural gas fuel configurations.
- Protects Mating Surfaces — Correct load distribution prevents fastener pull-through and surface damage to manifolds, brackets, or panels — damage that incorrect or worn hardware can accelerate over time.
- Genuine Wacker Neuson Part — Supplied as authentic OEM hardware, giving you full confidence that part number 5200021049 matches the original specification for your machine.
A washer distributes the clamping force of a fastener across a wider surface area, preventing the bolt or nut from pulling through or damaging the material it secures. In a hydronic surface heater like the E1250 or HSH380 series — where assemblies are subject to thermal cycling, vibration, and pressurized fluid circuits — using the correct washer in every position is essential to maintaining joint integrity. A missing, incorrect, or worn washer can lead to fastener loosening, surface damage, or fluid leaks that compromise heater output and require more extensive repairs.
Part Details
| Part Number | 5200021049 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
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.
