Yamaha YP400 Majesty Spark Plug
The Yamaha YP400 Majesty (346cc) takes an NGK CR8E spark plug, gapped to 0.028".
Key takeaways
- Spark plug: NGK CR8E.
- Iridium upgrade: NGK BPR7EIX.
- Gap: 0.028 inch - set it before fitting.
- Covers 1981-1982.
Buy the plugs for your Yamaha YP400 Majesty
The standard plug is the exact-fit replacement. The iridium version drops into the same spot, lasts longer, and fires a little stronger for a few dollars more. Many engines take more than one - check how many cylinders you have.
As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.
Frequently asked
What spark plug does a Yamaha YP400 Majesty take?
The Yamaha YP400 Majesty takes an NGK CR8E spark plug, gapped to 0.028 inch. The iridium upgrade is the BPR7EIX.
What is the spark plug gap for a Yamaha YP400 Majesty?
The spark plug gap for the Yamaha YP400 Majesty is 0.028 inch. Check and set the gap before fitting a new plug - most powersports plugs need a small adjustment out of the box.
Can I use an iridium plug in a Yamaha YP400 Majesty?
Yes. The BPR7EIX is the iridium version of the CR8E - same fit, longer life, and a slightly stronger spark. It is a straight upgrade.
More parts for your Yamaha YP400 Majesty
We cover the other consumables for your machine too - the exact fit, cited, in one place.