The Wacker Neuson is a genuine OEM Atmospheric Vent Screw designed for PT6-series trash pumps and the CT-series walk-behind concrete power trowels. As a direct OEM replacement, this part is sourced from Wacker Neuson and built to the same standards as the original component installed at the factory. Fitment spans the PT6LT, PT6LS, PT6Y, and PT6YT trash pump families, as well as the CT30, CT36, and CT48 walk-behind trowel lines — including gasoline, diesel, and electric variants. If you're servicing either a high-volume trash pump or a walk-behind trowel and need an exact-match vent screw, part is the correct OEM specification part for the job.
Key Features
- Genuine OEM Specification: — Manufactured to Wacker Neuson's original design tolerances, ensuring the vent passage dimensions and thread engagement match the housing precisely — no improvising with generic hardware.
- Threads In as a Direct Replacement: — Replaces the original atmospheric vent screw position-for-position, using the same thread spec and sealing interface as the factory-installed part.
- Broad Cross-Family Fitment: — Compatible with PT6LT, PT6LS, PT6Y, and PT6YT trash pump models, plus CT30, CT36, and CT48 walk-behind trowel variants in gasoline, diesel, electric, and variable-speed configurations.
- Maintains Proper Pressure Equalization: — A correctly functioning vent screw allows trapped air or pressure to escape from fluid chambers or housings, keeping internal components operating within their designed pressure range.
- Prevents Seal and Housing Stress: — A blocked or missing vent screw can cause pressure buildup that stresses seals and housings; replacing a damaged screw promptly protects surrounding components from accelerated wear.
An atmospheric vent screw is a small but functionally important fastener that provides a controlled pathway for air or low-level pressure to equalize between a sealed chamber and the surrounding atmosphere. On trash pumps, this prevents vacuum lock or pressure differential buildup inside pump housings and fluid reservoirs. On walk-behind concrete trowels, it serves a similar equalization role in gearbox or engine-adjacent cavities. When the vent screw becomes clogged, damaged, or missing entirely, pressure can accumulate inside the housing — placing excess load on seals, gaskets, and mating surfaces. Replacing it with the correct OEM part, Wacker Neuson 5000073929, restores proper venting and protects the integrity of the surrounding assembly.
Part Details
| Part Number | 5000073929 |
|---|---|
| Old Part Number | 0073929 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Atmospheric Vent Screw |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| PT6LT Pump w/Trailer | PT6LT | 5000007175, 5200014740 |
| 150mm/6in Centrifugal Trash Pu mp Skid Mounted | PT6LS | 5000007174, 5200014741 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP | 5000007596, 5000007595 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP-E | 5000008036, 5000008026 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP | 5000007592, 5000007591 |
| 915mm/36in CE Walk-behind Trow el | CT36ADP-E | 5000008034, 5000007697 |
| 1220mm/48in Walk-behind Trowel | CT48AGP | 5000007602, 5000007603 |
| 1220mm/48in CE Walk-behind Tro wel | CT48AGP-E | 5000008031, 5000008032 |
| 1220mm/48in Walk-behind Trowel | CT48ADP | 5000007598, 5000007599, 5000008199 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADP-E | 5000008027, 5000008028 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT-E | 5000007589, 5000008004 |
| 762mm/30in CE Walk-behind Trow el | CT30AGT | 5000008006, 5000008003 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT-E | 5000007587, 5000008002 |
| 1220mm/48in CE Walk-behind Tro wel | CT48AGT-E | 5000007601, 5000008020 |
| 762mm/30in CE Walk-behind Trow el | CT30ADT | 5000008005, 5000008001, 5000008197 |
| 1220mm/48in Walk-behind Trowel | CT48AGT | 5000008019, 5000008041 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT-E | 5000007590, 5000008008, 5000008226 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT-E | 5000007594, 5000008012 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADT-E | 5000007597, 5000008016 |
| 915mm/36in CE Walk-behind Trow el | CT36ADT | 5000008013, 5000008007, 5000008198, 5000008225, 5000009480 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT | 5000008014, 5000008011 |
| 1220mm/48in Walk-behind Trowel | CT48ADT | 5000008015, 5000008040 |
| 1220mm/48in Walk-behind Trowel | CT48BDT | 5000008017 |
| 915mm/36in Walk-behind Trowel | CT36BDT | 5000008009 |
| 1220mm/48in Variable Speed Wal k-behind Trowel | CT48AVP | 5000009219, 5000009220 |
| 1220mm/48in Variable Speed Wal k-behind Trowel | CT48AVT | 5000009217, 5000009218 |
| 915mm/36in CE Electric Walk-be hind Trowel | CT36EDT | 5000009064 |
| 762mm/30in CE Electric Walk-be hind Trowel | CT30EDT | 5000009063 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVP | 5000009235, 5000009236 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVT | 5000009233, 5000009234 |
| PT6Y | PT6Y-SA | 5100070835 |
| PT6YT | PT6YT | 5100070966 |
| PUMP PT6Y-AU | PT6Y-AU | 5100076956 |
| PT6YT | PT6YT-IN | 5100077923 |
| PT 6LS | PT6LS(I) | 5200017427, 5200012427 |
| 915mm/36in Walk-behind Trowel | CT36BDT-E | 5000008010 |
| Trash Pump | PT6LT(I) | 5100014076 |
| PT6Y | PT6Y | 5100064168, 5100069617 |
| Trash Pump | PTK6 | 5200007830 |
| PT6Y | PT6Y EPA T4 | 5100073464 |
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.
