The Wacker Neuson Cap is a genuine OEM component designed for the HSH380, E1250, and E1100 series hydronic surface heaters. Sourced directly from Wacker Neuson, this cap delivers an exact, verified fit for the models it serves — including LP/NG, Diesel, Basic, Standard, and Premium configurations across the E1250B, E1250S, and E1250P lines, as well as HSH380B and HSH380S variants and the E1100 series. As a genuine OEM part, it is manufactured to the same specifications as the original component installed at the factory, ensuring consistent performance and compatibility across the full range of supported heater configurations.
Key Features
- Genuine OEM Construction — Manufactured to Wacker Neuson's original material and dimensional spec, so the cap seats, seals, and functions exactly as the original did in service.
- Broad Hydronic Heater Coverage — Fits HSH380B, HSH380S, E1250B, E1250S, E1250P, and E1100 series hydronic surface heaters across LP/NG, Diesel, and generator-equipped configurations.
- Direct Drop-In Replacement — Matches the original mounting interface and dimensions, requiring no modification to adjacent fittings, hoses, or components during installation.
- Maintains System Integrity — A correctly fitted cap keeps the hydronic circuit sealed and pressurized; a damaged or missing cap can lead to fluid loss, pressure drop, and reduced heating output.
- Verified Part Number — Part number 5000168040 is confirmed against multiple Wacker Neuson HSH and E-series hydronic heater model configurations for confident ordering.
A cap in a hydronic surface heating system serves as a closure point on the fluid circuit — sealing ports, access points, or fluid pathways to maintain proper system pressure and prevent coolant or heat-transfer fluid from escaping. In hydronic heaters like the Wacker Neuson HSH380 and E1250 series, maintaining a sealed, pressurized loop is critical to efficient heat transfer across the hose network. When a cap is cracked, missing, or improperly seated, the system can lose pressure or fluid, causing uneven heating performance or complete system shutdown until the issue is corrected.
Part Details
| Part Number | 5000168040 |
|---|---|
| Old Part Number | 0168040 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| E1250S | E1250S | 5200012355, 5200012354 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| Hydronic Surface Heater w/ Gen erator, 3000 ft hose | S3000 | 5000620218, 5000620182 |
| 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.
