The Wacker Neuson Cap is a genuine OEM component designed for the HSH350, HSH380, E1100, and E1250 series hydronic surface heaters. As a direct OEM replacement, this cap is manufactured to the same specifications as the original part, ensuring a proper, trouble-free installation on your Wacker Neuson heating equipment. Compatible across multiple configurations — including LP/NG, diesel, standard, basic, and premium variants — part number covers a wide range of the HSH and E-series heater lineup. Keeping this cap in good condition is essential to maintaining the sealed integrity of your hydronic system and protecting its performance in demanding cold-weather applications.
Key Features
- Genuine OEM Sealing Integrity — Manufactured to original Wacker Neuson specifications, this cap provides the same pressure-rated seal as the factory-installed component, critical for hydronic fluid containment.
- Direct-Fit Replacement — Designed to thread or seat exactly as the original, this cap installs without modification on compatible HSH and E-series heater assemblies.
- Broad Series Compatibility — Fits HSH350, HSH380B, HSH380S, E1100, E1250B, E1250S, and E1250P hydronic surface heaters across LP/NG, diesel, and generator-equipped configurations.
- Protects System Pressure — A correctly seated cap prevents fluid loss and maintains circuit pressure, keeping the hydronic loop operating at full heating capacity.
- Fuel and Configuration Agnostic — A single part number covers propane, natural gas, and diesel-fueled variants, simplifying parts stocking for fleets running mixed heater configurations.
A cap on a hydronic surface heater serves as a closure point for fluid ports, fill points, or system access points within the heating circuit. It maintains a sealed environment inside the hydronic loop, which is essential for sustaining the pressure and fluid volume needed to transfer heat evenly across ground-thawing hoses or surface heating mats. When this cap is cracked, missing, or improperly seated, the system can lose fluid or pressure, leading to uneven heat distribution or a complete loss of heating performance — a critical failure on cold-weather concrete curing or ground-thawing jobsites.
Part Details
| Part Number | 5000168677 |
|---|---|
| Old Part Number | 0168677 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cap |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Hydronic Surface Heater | HSH350 | 5000620254, 5200001677 |
| E1250S | E1250S | 5200012355, 5200012354 |
| E1100 GROUND HEATER | E1100 | 5000620172, 5000620244, 5200001676 |
| 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.
