The Wacker Neuson 5200020039 Ring Gear is a genuine OEM component designed for LTN4Y and LTN5Y series light towers and APT4S and APT4T series pumps. Sourced directly from Wacker Neuson, this ring gear matches the original part in tooth geometry, material grade, and dimensional tolerances — ensuring proper mesh and power transfer in the drivetrain. Fitment covers a wide range of configurations across the LTN4Y and LTN5Y light tower family, including cold weather, 60 Hz, 120V/60 Hz, high-definition, and remote head variants, as well as APT4S and APT4T pump models in standard, cold weather, surge brake, and electric brake configurations. If you are replacing a worn or damaged ring gear on any of these machines, part number 5200020039 is the correct OEM specification part for the job.
Key Features
- Matched Tooth Profile: — Manufactured to OEM tooth geometry specifications, ensuring full mesh engagement and smooth power transfer without slippage or accelerated wear on the mating pinion.
- Direct OEM Replacement: — Installs in place of the original ring gear with no rework to surrounding drivetrain components; correct bore and tooth count confirmed for all listed models.
- Broad Model Coverage: — Fits LTN4Y and LTN5Y light tower variants — including 60 Hz, 120V/60 Hz, cold weather, high-definition, and remote head builds — plus APT4S and APT4T pump configurations.
- Drivetrain Integrity: — A correctly functioning ring gear maintains consistent torque delivery to the driven assembly; a worn or cracked ring gear causes rough engagement, noise, and eventual loss of drive.
- Genuine Wacker Neuson OEM Part: — Supplied as an authorized OEM component under part number 5200020039, giving you confidence that material grade and heat treatment match the original production specification.
The ring gear is a toothed circular component that meshes with a smaller pinion gear to transmit rotational force and multiply torque within a drivetrain assembly. On light towers and pump units, it plays a critical role in transferring engine or motor output to the driven load smoothly and at the correct ratio. When a ring gear wears down or cracks — typically from insufficient lubrication, impact damage, or extended service without inspection — tooth contact becomes uneven, causing vibration, noise, and ultimately a complete loss of drive that takes the machine out of service.
Part Details
| Part Number | 5200020039 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Ring Gear |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| LTN5Y CH | LTN5Y CH | 5100069552 |
| LTN5Yp | LTN5Yp | 5100069549 |
| LTN5Ypa | LTN5Ypa | 5100069551 |
| LTN5Y SA | LTN5Y SA | 5100069548 |
| LTN4Y | LTN4Y ME | 5100069545 |
| LTN4Y | LTN4Y | 5100073603 |
| LTN4Y SA | LTN4Y SA | 5100069547 |
| LTN4Y 60 Hz | LTN4Y 60Hz | 5100069546 |
| LTN5Ypk | LTN5Ypk | 5100077880 |
| LTN4Y 120V/60Hz | LTN4Y 120V/60Hz | 5100075978 |
| LTN5Yp HD | LTN5Yp HD | 5100079429 |
| LTN4Y RH | LTN4Y RH | 5100077620 |
| LTN5Y UK | LTN5Y UK | 5100069553 |
| LTN5Y | LTN5Y | 5100069550 |
| APT4S Pump w/Skid, Cold Weather | APT4S CW | 5200019798 |
| APT4T Pump, Electric Brake | APT4T | 5200019644, 5200019643 |
| APT4S Pump w/Skid | APT4S | 5200018977 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792, 5200019793 |
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.
