Bomag 05717761 Marginal Relay

The Bomag 05717761 Marginal Relay is a genuine OEM electrical relay designed for Bomag tandem rollers and single drum rollers, including the BW 141 AD-4, BW 154 AD-4, BW 151 AD-4, BW 161 AD-4, BW 177 DHC-4, BW 179 DHC-4, and related variants. Sourced directly from Bomag, this relay matches the original component's switching specifications and connector configuration, ensuring a drop-in fit with no circuit modifications. Whether you're servicing a BW 138 AD tandem roller or a BW 145 DH 40 single drum roller, this genuine OEM part delivers the exact electrical response the machine's control system expects. Contact DHS Equipment to confirm availability and place your order.

Key Features

• Correct Switching Specs — genuine OEM construction means this relay matches the original coil resistance, contact rating, and trigger threshold required by Bomag's machine control circuits
• Direct Connector Match — terminals and housing conform to the original wiring harness layout, allowing straightforward installation without splicing or adapting existing connections
• Broad Tandem and Single Drum Coverage — fits BW 141 AD-4, BW 154 AD-4, BW 151 AD-4, BW 161 AD-4, BW 151 AC-4, BW 138 AD, BW 138 AC, BW 135 AD, BW 177 DHC-4, BW 177 PDHC-4, BW 179 DHC-4, BW 145 DH 40, BW 145 PDH 40, and AM variants across both families
• Electrical System Integrity — a failed marginal relay can cause erratic or non-responsive control behavior; replacing it with the correct OEM part restores predictable circuit switching and protects downstream electrical components
• Genuine Bomag OEM Part — manufactured to the same standard as the relay fitted at the factory, with part number 05717761 traceable directly through Bomag's parts catalog

A marginal relay is an electrical switching component that controls a secondary or auxiliary circuit within the machine's overall electrical system. It receives a low-current signal from the control unit and uses it to open or close a higher-current circuit, keeping sensitive control electronics isolated from the loads they govern. When a marginal relay fails — through contact corrosion, coil burnout, or housing fatigue — the circuit it controls may behave intermittently or stop responding entirely, leading to operational faults that can be difficult to diagnose without replacing the relay first.

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.

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.