The Wacker Neuson is a genuine OEM Lock Washer designed for a broad range of Wacker Neuson hydronic surface heaters, ground heaters, indirect air heaters, and related heating system accessories. This OEM part covers fitment across the E3000, E2200, E5000, E1100, E1250, HI770XHD, HSH, CUB400, CUB700, Pureheat, and Arctic Bear HD and XHD series, along with pump packs, heat exchangers, hose handling systems, and mobile drying systems. As a genuine Wacker Neuson component, the is sourced directly through the manufacturer's supply chain, ensuring it meets the same specifications as the hardware installed at the factory. Confirm your model number before ordering to ensure this Lock Washer is correct for your specific configuration.
Key Features
- Genuine OEM Locking Security — Engineered to the exact hardness and spring tension spec required to maintain secure fastener preload under the thermal cycling and vibration loads common in heating equipment.
- Direct Hardware Match — Replaces the original Lock Washer in the same position with no rework; matches the OEM bore, outside diameter, and split profile for correct seating against mating fasteners.
- Broad Heating System Fitment — Covers E3000, E2200, E5000, E1100, E1250, HI770XHD, HSH350/380/650/700, CUB400/700, Pureheat, Arctic Bear HD/XHD, and associated pump packs, heat exchangers, and hose handling systems.
- Thermal Environment Rated — Built to retain its locking function in the elevated-temperature operating environment of hydronic and indirect-fired heating equipment, where standard washers can relax and allow fasteners to loosen.
- Fuel and Fluid System Integrity — Used in assemblies that may involve fuel lines, fluid connections, or burner components; maintaining correct fastener torque through a properly functioning lock washer is critical to leak-free, safe operation of these systems.
A lock washer is a hardened split-ring or toothed washer installed under a bolt or nut to resist loosening caused by vibration, thermal expansion, and contraction. In heating equipment such as hydronic surface heaters, ground heaters, and indirect air heaters, mechanical vibration from burners, pumps, and fans — combined with repeated heat-and-cool cycles — can cause standard fasteners to back off over time. The lock washer bites into both the fastener and the mating surface, maintaining clamp load and keeping critical connections sealed and secure. When a lock washer loses its tension or is missing entirely, fasteners can work loose, leading to fluid leaks, combustion air path issues, or structural connections that shift under load.
Part Details
| Part Number | 5000167733 |
|---|---|
| Old Part Number | 0167733 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Lock Washer |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E3000 Hydronic Surface Heater with generator | E3000 | 5000620219, 5000620679, 5000620158, 5000620678, 5200014677, 5200004952, 5100017807, 5100017809, 5200014678, 5200014679, 5200014720, 5100017806, 5100017808, 5200014721, 5100017810, 5100017811, 5100025046, 5100055568, 5100056441, 5100017801, 5100056440, 5100025045 |
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| HSH700 | HSH700G | 5000620243 |
| E2200 GROUND HEATER, W/ LIFT BAIL | E2200 | 5000620215, 5000620176, 5000620216, 5000620226, 5100017448, 5100017449 |
| E5000 GROUND HEATER, W/GAS BURNER | E5000 | 5000620898, 5000620897, 5000620899 |
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| HP252 | HP252 | 5000620249 |
| DPP33 Dual Pump Pack | DPP33 | 5000620429 |
| SPP4.4 Single Pump Pack | SPP4.4 | 5000620427 |
| DPP8.8 Dual Pump Pack | DPP8.8 | 5000620428 |
| HX50 Heat Exchanger | HX50 | 5000620431 |
| HX100 Heat Exchanger | HX100 | 5000620432 |
| Skid Mounted-Indirect Fired Ai r Heater, NG/LP | CUB700 | 5000620208, 5000620213, 5000620687, 5000620207 |
| HHS702 Hose Handling System | HHS702 | 5000620426 |
| BP45 Pureheat Booster Pump, 1.5hp | BP45 | 5000620433 |
| Pureheat Hydronic Heater, Oil Burner | Pureheat | 5000620245, 5000620246, 5000620190, 5000620220 |
| E1250S | E1250S | 5200012355, 5200012354 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
| E3000 ES Hydronic Surface Heater | E3000ES | 5000620968, 5000620967 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| Skid Mounted-Indirect Fired Ai r Heater, NG/LP | CUB400 | 5000620206, 5000620211, 5000620212, 5000620615 |
| E12540B | E1250B | 5200012353, 5200007613 |
| HSH650 | HSH650 | 5000620991 |
| Mobile Drying System | MC5200 | 5000620201, 5000620232 |
| HSH380s | HSH 380S | 5100054643 |
| E 1250P Hydronic Heater, Premium, Diesel | E1250P | 5200012357, 5200012356 |
| Indirect Mobile Air Heater, Na tural Gas | Arctic Bear HD | 5000620199, 5000620197 |
| HSH380S-Diesel, with Generator | HSH380S | 5200012371, 5200012370 |
| HSH380B-Diesel, without generator | HSH380B | 5200012359, 5200007614 |
| Hydronic Surface Heater, 700m hose | E700M | 5000620195 |
| HHS2202 Hose Handling System | HHS2202 | 5000620423 |
| Mobile Indirect Fired Air Heat er, Diesel w/Genset | CUB700GM | 5000620759 |
| Hose Handling System | HHS2200 | 5000620418 |
| Hose Handling System | HHS3000 | 5000620419 |
| Hose Handling System | HHS700M | 5000620420 |
| Hose Handling System | HHS1101 | 5000620421 |
| HHS3002 Hose Handling System | HHS3002 | 5000620424 |
| HHS3004 Hose Handling System | HHS3004 | 5000620425 |
| Mobile Indirect Fired Air Heat er, Diesel | CUB700M | 5000620758 |
| HHS2502 Hose Handling System | HHS2502 | 5200003554 |
| Cross Heater with oil burner | CH5000 | 5000620240, 5000620242 |
| Hose Handling System | HHS1701 | 5000620422 |
| HHS1251 Hose Handling System | HHS1251 | 5200019011 |
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.
