The Multiquip 0660009990 Switch Key EY35/EY40/EH34 GA5/MDR9 is a genuine OEM ignition switch key designed for EH34, EY35, EY40, and MDR9 series equipment. As a direct OEM replacement, this key is manufactured to the exact specifications required for proper ignition system operation across compatible Multiquip models. Sourced directly through the Multiquip OEM parts program, the part ensures correct fitment with no guesswork for operators working on EY35, EY40, EH34, or MDR9 units. Keep a verified replacement on hand to avoid unnecessary downtime when a key is lost or worn.
Key Features
- OEM Ignition Compatibility — Cut and coded to the correct ignition cylinder profile for EH34, EY35, EY40, and MDR9 series equipment, ensuring smooth engagement every time.
- Genuine Multiquip OEM Part — Supplied directly through the Multiquip OEM parts program, matching the original key specification for the ignition switch assembly.
- Direct Drop-In Replacement — Fits the existing ignition switch cylinder without modification, restoring full start/stop function immediately upon installation.
- Broad Series Fitment — Confirmed compatibility across EH34, EY35, EY40, and MDR9 models, making this a practical stock item for operators running multiple units in this family.
- Ignition System Integrity — A correctly fitting key prevents ignition switch wear caused by forcing an incorrect key, protecting the switch cylinder from premature failure.
- Electrical Safety Assurance — Using the correct OEM key ensures the ignition circuit engages and disengages cleanly, supporting safe and reliable machine shutdown in all operating conditions.
The ignition switch key is the operator's primary interface with the machine's ignition circuit — it physically actuates the switch that controls power to the engine's start and stop systems. A key that is worn, broken, or incorrectly profiled can prevent the machine from starting, cause intermittent ignition faults, or in a worst case, prevent the operator from shutting the engine down cleanly. Replacing a lost or damaged key with the correct OEM part restores full control of the ignition system and ensures the switch cylinder is not subjected to unnecessary stress from a mismatched key blank.
Part Details
| Part Number | 0660009990 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Switch Key EY35/EY40/EH34 GA5/MDR9 |
Compatibility & Fitment
| Name | Model |
|---|---|
| EH34 | EH34 |
| EY35 | EY35 |
| EY40 | EY40 |
| MDR9 | MDR9 |
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.
