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ARIMAR Liferaft DEEP SEA II SOLAS 6-Person Throw-Overboard | 4Boats
ARIMAR Liferaft DEEP SEA II SOLAS 6-Person Throw-Overboard | 4Boats
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OMC Ignition Key #21 - 501786
Premium Replacement for 73 Series Ignition Systems
This high-quality replacement ignition key is specifically engineered for OMC, Evinrude, and Johnson outboard motors and stern drive systems. Identified by key number 21, it is part of the "73 Series" of keys used during the mid-1970s. Whether you have lost your original key or need a reliable spare for your vessel, this key ensures smooth operation and consistent ignition contact.
Key Features
- ✔ Direct fit for Key Code #21
- ✔ High-strength corrosion-resistant metal
- ✔ Fits in-dash and remote control boxes
- ✔ Durable design for marine environments
Technical Specs
| Key Number: | 21 |
| Key Series: | 73 Series |
| Application: | Mid-Choke Systems |
| Material: | Nickel Plated Brass |
Compatibility / Fitment Guide
| Engine Type | Year Range | Notes |
|---|---|---|
| OMC / BRP (Evinrude / Johnson) | 1973 - 1976 | Fits remote controls & dash switches |
| OMC Stern Drive | 1973 - 1976 | 73 Series Switches ONLY |
OEM Cross Reference
| OMC / BRP | 501786, 0501786 |
| Reference Code | 73-21 |
Questions & Answers
Is this a genuine original part?
This is a premium quality replacement part manufactured to match original BRP/OMC specifications for fitment and reliable engine starting.
How do I know if I need Key #21?
The key number (21) is typically stamped on the face of your original ignition switch or on your original key. This key belongs to the 73 Series (used 1973-1976).
Will this work on models newer than 1976?
Usually no. In 1977, OMC switched to the 77 Series keys which have a different cut. Please verify your ignition series before ordering.
Note: 4boats.co.uk recommends verifying your key number against the switch housing before purchase to ensure compatibility.
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