Wacker Neuson 5000178156 O-Ring Manifold RD12 Tow Valve
Wacker Neuson

Wacker Neuson 5000178156 O-Ring Manifold RD12 Tow Valve

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SKU:
5000178156-Wacker Neuson
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The Wacker Neuson is a genuine OEM O-Ring Manifold RD12 Tow Valve designed for RD12, RD16, and CB14B series tandem rollers. As a direct OEM replacement, part is manufactured to the exact material and dimensional tolerances required by Wacker Neuson for proper tow valve manifold sealing. This part fits a wide range of configurations across the RD12A-90, RD12-90, RD16-90, RD16-100, CB14B-900, and CB14B-1000 series, including solid ROPS and foldable ROPS variants. Sourcing the correct OEM o-ring for this application ensures the hydraulic manifold assembly maintains a leak-free seal under operating pressures.

Key Features

  • OEM Elastomer Specification — Manufactured to Wacker Neuson's material grade for this tow valve manifold position, ensuring correct compression set and chemical resistance with hydraulic fluid.
  • Drop-In Manifold Replacement — Sized and profiled to seat directly into the tow valve manifold groove on applicable RD-series and CB14B-series rollers without re-machining or adaptation.
  • Broad RD and CB14B Fitment — Covers RD12-90, RD12A-90, RD16-90, RD16-100, CB14B-900, and CB14B-1000 series tandem rollers across multiple machine configurations.
  • Maintains Hydraulic Integrity — A correctly seated tow valve manifold o-ring prevents hydraulic fluid bypass and keeps the tow release circuit functioning as designed — critical for safe machine towing and transport.
  • Tow Circuit Safety — The tow valve controls hydraulic bypass during non-powered towing; a failed or degraded o-ring in this manifold can compromise the machine's ability to be safely moved, making prompt replacement essential.

The tow valve manifold o-ring seals the hydraulic passage within the tow valve assembly — the circuit that allows the roller's hydrostatic drive to be bypassed when the machine needs to be towed without engine power. This o-ring prevents internal hydraulic leakage at the manifold interface, which keeps the valve operating correctly and maintains pressure containment within the circuit. When this o-ring deteriorates or is damaged during service, hydraulic fluid can bypass the seal, causing the tow valve to function erratically or the manifold to weep fluid — conditions that require immediate attention to avoid drivetrain damage or unsafe towing behavior.

Part Details

Part Number5000178156
Old Part Number0178156
BrandWacker Neuson
Part TypeGenuine OEM
DescriptionO-Ring Manifold RD12 Tow Valve

Compatibility & Fitment

Name Model Machine Number
RD16-90 Vibratory Roller RD16-90 5000620060, 5000620127, 5000620799
RD 16-100 RD16-100 5000620402, 5000620798
RD12A-90 ROLLER,DBL DRUM,GRN RD12A-90 5000620369, 5000620058, 5000620320
RD12-90 ROLLER, DOUBLE DRUM, SOLID ROPS RD12-90 5000620059, 5000620321
Soil and Asphalt Compaction CB14B-900 5200004071, 5200004073, 5200004074, 5200005252, 5200019030
Soil and Asphalt Compaction CB14B-1000 5200004072, 5200004688, 5200019031

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.