Multiquip

Multiquip 2177140101 Rectifier Diode EY40

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2177140101 | Multiquip

The Multiquip 2177140101 Rectifier Diode EY40 is a genuine OEM component designed for EY40 series equipment. As a direct OEM replacement, it meets the original electrical specifications required for correct charging system operation on EY40-powered machines. Sourced directly through Multiquip's authorized parts network, this diode delivers the same performance as the unit it replaces. Confirm your model against the EY40 fitment designation before ordering to ensure a correct match.

Key Features

  • OEM-Matched Electrical Specification — Built to the original rectification and voltage tolerance spec for the EY40 series, ensuring the diode performs correctly within the charging circuit without risking over- or under-voltage output.
  • Direct Drop-In Replacement — Engineered to the same connector configuration and mounting profile as the original, allowing straightforward installation without adaptation.
  • EY40 Series Fitment — Confirmed compatibility with EY40-powered equipment; verify your model code before ordering to ensure this is the correct diode for your application.
  • Protects Downstream Electrical Components — A properly functioning rectifier diode delivers clean, stable DC current to the system; a failed diode can allow AC bleed-through that damages sensitive electrical components including regulators, batteries, and control boards.
  • Genuine OEM Part — Supplied as a genuine Multiquip OEM component, manufactured to the same standards as the original production unit for full system compatibility.

The rectifier diode is a critical component in the engine's charging circuit. Its job is to convert alternating current (AC) generated by the alternator into the direct current (DC) that the battery and electrical system require. When a rectifier diode fails or degrades, the charging system loses efficiency or stops delivering usable DC output entirely — leading to battery drain, erratic electrical behavior, or a complete loss of charge. Replacing a worn or shorted diode with the correct OEM unit restores clean, consistent power delivery and protects the broader electrical system from damage caused by improper current flow.

Part Details

Part Number2177140101
BrandMultiquip
Part TypeGenuine OEM
DescriptionRectifier Diode EY40

Compatibility & Fitment

Name Model
EY40 EY40

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.