The Wacker Neuson 5200021787 Brake Line Kit is a genuine OEM component designed for the APT4T, APT6T, and APT8T Surge Brake pump series, including all standard and Cold Weather configurations. As a factory-sourced part, it is manufactured to the exact specifications required by these trailer-mounted pump units, ensuring a direct, correct-fit installation without the guesswork of adapting an off-spec replacement. Confirmed fitment covers the APT4T, APT4T Cold Weather, APT6T, APT6T Cold Weather, APT8T, and APT8T Cold Weather models. Keeping the brake line system in top condition is essential for safe towing and consistent surge brake response on any worksite.
Key Features
- Genuine OEM Brake Line Integrity — Manufactured to Wacker Neuson's exact pressure ratings and line diameter specifications, so the surge brake system operates as engineered — no compromised hydraulic response from undersized or incompatible tubing.
- Drop-In Installation — Engineered to match the original routing, connection points, and fittings of the APT-series brake system, allowing a straightforward swap with the correct tools and no line modification.
- Broad APT-Series Coverage — A single kit fits the APT4T, APT6T, and APT8T Surge Brake pump units, including Cold Weather variants, covering the full range of Wacker Neuson trailer pump configurations.
- Consistent Surge Brake Activation — Intact, properly routed brake lines maintain the hydraulic pressure transfer needed for the surge mechanism to engage smoothly and proportionally during deceleration.
- Critical Safety Component — Brake line condition directly affects stopping performance of the towed pump unit; a cracked, kinked, or leaking line can cause delayed or failed brake engagement, making timely replacement essential.
The brake line kit is part of the hydraulic circuit that connects the surge coupler to the wheel brake actuators on a trailer-mounted pump. When the towing vehicle decelerates, the coupler compresses and pushes hydraulic fluid through these lines to apply the trailer brakes proportionally — a process that depends entirely on line integrity and a leak-free connection. A damaged or deteriorated brake line reduces fluid pressure, leading to sluggish or non-existent brake response, which creates a serious towing hazard and can put the operator and others at risk.
Part Details
| Part Number | 5200021787 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Brake Line Kit |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT6T Pump, Surge Brake, Cold Weather | APT6T CW | 5200019794 |
| APT6T Pump, Surge Brake | APT6T | 5200019646 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796 |
| APT4T Pump, Surge Brake | APT4T | 5200019643 |
| APT8T Pump, Surge Brake | APT8T | 5200019648 |
| APT4T Pump, Surge Brake, Cold Weather | APT4T CW | 5200019792 |
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.
