The Wacker Neuson Coolant Bypass Wire Harness is a genuine OEM component designed for the RT56, RT82, RTLx, RTKx, and RTx series remote-controlled vibratory trench rollers. As a direct factory replacement, this harness is produced to the same specifications as the original, ensuring correct connector fit, wire gauge, and routing within the machine's cooling system circuit. It is compatible across a wide range of SC2 and SC3 generation trench roller configurations, including Compatec-equipped models. Confirm your machine number against the fitment list before ordering to ensure an accurate match.
Key Features
- Genuine OEM Wiring Integrity — Manufactured by Wacker Neuson to original circuit specifications, delivering correct conductor sizing and connector terminations for the coolant bypass system.
- Direct Plug-In Replacement — Connectors and harness routing match the original layout, allowing the harness to seat correctly into existing mounts and terminals without modification.
- Broad Trench Roller Compatibility — Fits RT56-SC, RT56-SC2, RT82-SC, RT82-SC2, RTLx-SC3, RTKx-SC3, RTx-SC2, RTL82-SC3, RTK82-SC3, and HTC15 trench roller variants, covering both SC2 and SC3 generation machines.
- Protects Cooling System Operation — A correctly functioning coolant bypass harness ensures the engine's thermal management signals are read and acted on accurately; a faulty harness can cause incorrect coolant routing, overheating, or false fault codes.
- Electrical Safety Assurance — As a component in the engine cooling control circuit, using a genuine OEM harness with correct insulation and shielding helps prevent shorts and signal errors that could compromise machine operation in the trench.
The coolant bypass wire harness carries control signals between the engine management system and the coolant bypass valve, directing the flow of coolant based on operating temperature. When the engine is cold, the bypass circuit keeps coolant circulating internally to reach operating temperature faster; as temperature rises, the system opens to route coolant through the full cooling circuit. A damaged or failed harness can interrupt these signals, leading to erratic temperature readings, inefficient warm-up cycles, or uncontrolled overheating — any of which can force an unplanned shutdown during compaction operations.
Part Details
| Part Number | 5000161278 |
|---|---|
| Old Part Number | 0161278 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Coolant Bypass Wire Harness |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Vibratory Trench Roller | RT82-SC2 | 5000620530, 5000620293, 5000620367, 5000620525, 5000620528, 5000620529, 5000620526, 5000620527 |
| Vibratory Trench Roller | RT82-SC2 EU | 5000620845, 5200003107 |
| Vibratory Trench Roller | RT56-SC2 | 5000620294, 5000620368 |
| Vibratory Trench Roller | RT56-SC2 EU | 5000620844 |
| Vibratory Trench Roller | RT82-SC | 5000009025, 5000620365, 5000620324, 5000620353, 5000620480, 5000620481, 5000620482 |
| Vibratory Trench Roller | RT56-SC | 5000009026, 5000620366 |
| RTLx-SC3 TRENCH ROLLER,GRN | RTLx-SC3 | 5200019251, 5200019250, 5200019254, 5200019252, 5100018515, 5100018516, 5200019253, 5100038346, 5100045091, 5100052332, 5100052269 |
| RTL82-SC3 ROLLER,SMOOTH DRUM | RTL82-SC3 | 5200019234, 5200019238, 5200019232, 5200019233, 5200019235, 5200019236, 5200019237, 5200019239, 5200022541 |
| RTKx-SC3 Trench Roller | RTK82-SC3 | 5200019257, 5200019256, 5200019255 |
| RTKx-SC3 TRENCH ROLLER,GRN | RTKx-SC3 | 5200019258, 5200019259, 5100018517, 5100018518, 5100034371, 5100037397, 5100039613, 5100052333, 5100052334, 5100052335, 5100052336, 5100052337 |
| Trench Roller | RTx-SC2 EU | 5100028378, 5200008540, 5100052330 |
| RTx-SC2 TRENCH ROLLER | RTx-SC2 | 5200008538, 5200008539, 5200018044, 5200018329 |
| Trench Roller | HTC15 | 5100065571 |
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.
