Mercury MerCruiser Quicksilver Ignition Key 126 | 30431126 | OEM Key Code 126
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Part Details
- Part Number: 30431126
- Brand: Mercury Marine / Quicksilver (Genuine OEM)
- Official Product Type: Ignition Key — Key Code 126
- Key Number Stamped: 126
- Key Series: Mercury 30431 / 89491 ignition key series
- System: Ignition / Electrical — Ignition Switch Key
- GTIN / UPC: 745061134195
- Dimensions (approx.): 1.65 in. × 0.80 in. × 0.08 in.
- Weight (approx.): ~5 g / ~0.01 lb
What This Part Is
This is the genuine OEM Mercury / Quicksilver replacement ignition key stamped 126, part number 30431126. It is part of the Mercury 30431 ignition key series and is used wherever the ignition switch or key chart specifies key code 126. Match by the number stamped on the original key or the key code shown in the ignition switch parts diagram — not by engine model or horsepower.
Compatible Applications
This key is matched by ignition key code 126, not by engine displacement or drive model. It is compatible with Mercury and MerCruiser ignition switches in the 30431 and 89491 series that specify key number 126. Verify the required key code from:
- The number stamped on the existing key
- The ignition switch key chart in the Mercury parts diagram for your vessel’s electrical or remote control group
- The stamped key-code reference on the ignition switch housing
Key Code Notice
The 30431 series covers key codes 123 through 134 (part numbers 30431123 through 30431134). Each key code is unique to its switch — only the correct stamped number will operate the switch. Do not order by engine serial number or vessel model alone; always confirm the key code first.
When This Part Needs Replacement
- Original key is lost
- Key is bent, cracked, or worn
- Key no longer turns the ignition switch smoothly
- A spare key is needed for the vessel or emergency access
Installation Notes
- No mechanical installation required — insert the key into the ignition switch and test before use
- Confirm the ignition switch is coded for key 126 before ordering
- Do not force the key if it does not turn smoothly — the switch may require a different key code or the ignition cylinder may be worn
- Keep a spare key in a secure, accessible location on board
Cross-Reference Part Numbers
- Mercury / Quicksilver: 30431126
- Key stamped: 126
- Key series: 30431 / 89491
- Related key codes in same series: 123, 124, 125, 127, 128, 129, 130, 131, 132, 133, 134 — confirm your exact code before ordering
Related Parts
- Browse Spark Plugs & Ignition Parts for Mercury and MerCruiser ignition components
- Browse MerCruiser Marine Engine Parts for the full Mercury / MerCruiser catalog
Parts Desk Insights
Best use case: The most common reason this key is ordered is a lost original — it is also a good idea to keep a spare on board for any vessel where access to the ignition is time-sensitive. Because the price point is low, ordering a second key at the same time as the first is always worth considering.
Common issue: The most frequent ordering mistake is selecting a key without confirming the stamped key code. The 30431 series covers multiple key codes that look identical but operate different ignition cylinders. Always read the number stamped on the existing key or reference the Mercury key chart for the ignition switch. If the original key is already lost, the key code is usually stamped on the ignition switch housing or available through the vessel’s Mercury parts diagram.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.