Wacker Neuson 5000114590 Hollow Hex SAE #4 Plug

The Wacker Neuson is a genuine OEM Hollow Hex SAE #4 Plug designed for RD11 series hydrostatic double drum vibratory rollers and RTKx-SC3 and RTK82-SC3 remote-controlled trench rollers. Sourced directly from Wacker Neuson, this plug meets the exact specifications of the original part it replaces. Compatible across multiple configurations of the RD11A, RD11V, and RD11AEC tandem rollers, as well as the full RTKx-SC3 and RTK82-SC3 trench roller lineup, part number is the correct choice when restoring hydraulic system integrity on these machines. Using the properly rated SAE #4 hollow hex plug ensures a secure, leak-free seal that keeps your hydraulic circuit operating as intended.

Key Features

• Genuine OEM Sealing Spec — Manufactured to Wacker Neuson's exact SAE #4 hollow hex thread and pressure rating, ensuring a proper hydraulic seal without improvisation.
• Direct-Install Fitment — Threaded to SAE #4 standard for drop-in installation into existing hydraulic ports on compatible machines — no thread chasing or adapters needed.
• Broad Roller Compatibility — Fits RD11A, RD11V, and RD11AEC hydrostatic double drum tandem rollers as well as RTKx-SC3 and RTK82-SC3 remote-controlled trench rollers across numerous serial configurations.
• Hydraulic Circuit Protection — A correctly seated plug prevents fluid loss, contamination ingress, and pressure drop in critical hydraulic circuits — conditions that lead to erratic drum drive or loss of vibration function.
• Fuel and Fluid Safety Compliance — In hydraulic systems, an improperly sealed port can result in fluid leak hazards and pressure system failures; using the correct OEM-rated plug directly addresses this risk.

A hollow hex plug is a threaded fastener used to seal unused or temporarily open hydraulic ports within a machine's fluid circuit. The hollow hex drive allows for installation and removal with a hex key in tight or recessed port locations. On machines like the RD11 tandem roller and RTKx-SC3 trench roller, maintaining a fully sealed hydraulic system is essential to consistent drum vibration, accurate propulsion response, and safe operation. A damaged, missing, or incorrect plug can cause hydraulic fluid leakage, pressure loss in the circuit, and contamination that degrades seals and valves throughout the system.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

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