The Wacker Neuson is a genuine OEM Machined High Speed Gearbox designed for the CT36 and CT48 series walk-behind concrete power trowels. As a direct replacement sourced from Wacker Neuson, this gearbox is manufactured to the same specifications as the original component installed at the factory. Confirmed fitment spans a wide range of CT36 and CT48 models, including the CT36-5A, CT36-6, CT36-8A, CT36-9, CT36-400E, CT36-X, CT48-8A, CT48-9, CT48-11A, and CT48-13A-V variants.
Key Features
- Precision-Machined Gear Housing — manufactured to exact dimensional tolerances for smooth, consistent power transfer to the trowel blades.
- Genuine OEM Component — sourced directly from Wacker Neuson, ensuring this gearbox matches the original part in material grade, gear ratio, and fitment interface.
- Broad CT-Series Compatibility — fits CT36 and CT48 walk-behind power trowel models across multiple engine and voltage configurations, including standard, vari-speed, and EU variants.
- High-Speed Output Performance — engineered specifically for high-speed blade operation, enabling the trowel to achieve the surface finish speeds required for professional concrete work.
- Drop-In Installation — mounts to the existing drive system using the original bolt pattern and output shaft interface, keeping your repair straightforward.
The gearbox in a walk-behind concrete power trowel transmits engine power to the rotating blade assembly, stepping up rotational speed to drive the finishing blades at the rate needed to properly work and finish a concrete slab. A high-speed gearbox is specifically designed to achieve the faster blade RPM required for finishing passes. When the gearbox wears or fails, blade speed becomes inconsistent or drops entirely, resulting in poor surface finish quality and potential damage to the concrete. Replacing a worn gearbox with the correct OEM unit restores full blade performance and protects the integrity of the trowel's drive system.
Part Details
| Part Number | 5000163904 |
|---|---|
| Old Part Number | 0163904 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Machined High Speed Gearbox |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CT36-8A-V | CT36-8A-V | 5000620832, 5000009442 |
| CT36-8A Trowel | CT36-8A | 5000009439, 5000620831 |
| CT48-8A Trowel | CT48-8A | 5000009449 |
| CT48-11A Trowel | CT48-11A | 5000009450, 5000620835 |
| CT48-13A-V Trowel | CT48-13A-V | 5000009452, 5000620836 |
| CT48-8A | CT48-8A EU | 5000620837 |
| CT36-400E Trowel | CT36-400E | 5000009448, 5000620828 |
| CT36-5A Trowel | CT36-5A | 5000009438, 5200016256 |
| CT36-5A | CT36-5A EU | 5000620829 |
| CT36-9-V Trowel | CT36-9-V | 5000009447, 5000620834 |
| CT36-5A-C Trowel | CT36-5A-C | 5000620040 |
| CT36-9 Trowel | CT36-9 | 5000009444, 5000620833 |
| CT36-6 Trowel | CT36-6 | 5000009443, 5000620830 |
| CT48-9 Trowel | CT48-9 | 5000009453, 5000620838 |
| 915mm/36in, Walk-Behind Trowel | CT36-X | 5000620036 |
| 915mm/36in, Walk-behind Trowel | CT36-X-C | 5000620039 |
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.
