Multiquip 01090201 Diode Assembly Id80/Id81

The Multiquip 01090201 is a genuine OEM Diode Assembly Id80/Id81 designed for RAMMAX walk-behind roller models including the RW1404, RW1404MR, and RW1504HF. As an authentic Multiquip OEM component, it meets the exact electrical specifications of the original part installed at the factory, ensuring correct output and a proper drop-in fit within the machine's charging or rectification circuit. Verify your serial number against fitment notes — the RW1404MR application applies to S/N 326075 and up, while the RW1504HF application covers units up to S/N.

Key Features

• Correct Electrical Specification — Genuine OEM construction ensures this diode assembly matches the precise rectification rating of the Id80/Id81 spec, preventing under- or over-voltage conditions in the electrical system.
• Direct-Fit Replacement — Engineered to install in the same position as the original component with no reworking of the wiring harness or mounting bracket required.
• Confirmed Roller Fitment — Compatible with RW1404, RW1404MR (S/N 326075 and up), and RW1504HF (up to S/N 1534188) RAMMAX roller models; always cross-reference your serial number before ordering.
• Protects the Charging Circuit — A functioning diode assembly allows current to flow in only one direction, safeguarding the battery and downstream electrical components from reverse current damage.
• Electrical Safety Integrity — Using a correctly rated OEM diode prevents uncontrolled current feedback that can damage sensitive control circuits or create hazardous conditions in the machine's electrical system.
• Genuine Multiquip OEM Part — Sourced directly through the Multiquip OEM supply chain and sold by DHS Equipment, so you can order with confidence that part number 01090201 is the correct, unmodified component.

A diode assembly in a roller's electrical system acts as a one-way gate for electrical current, allowing current to pass in a single direction while blocking any reverse flow. In RAMMAX roller applications, this component is typically part of the charging or rectification circuit, converting alternating current from the alternator into usable direct current for the battery and onboard electronics. When a diode assembly fails, the machine may experience a dead or draining battery, erratic electrical behavior, or damage to connected components — making timely replacement critical to keeping the roller operational.

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.