2 Genuine NGK 7421 BMR6A Spark Plugs
Product Description
This listing is for two (2) genuine NGK 7421 BMR6A spark plugs. These plugs deliver dependable ignition performance and long service life for a wide range of small engines.
Cross Reference: Replaces NGK 5921 BM6A
| Feature | Description |
|---|---|
| Construction | NGK standard plug design for long life and optimal ignition performance. |
| Metal Plating | Trivalent metal plating for superior anti-corrosion and anti-seizing protection. |
| Insulator | Pure alumina silicate ceramic with corrugated ribs to prevent flashover; excellent heat transfer. |
| Core Material | High-conductivity copper core for improved heat removal. |
| Sealing | Triple-sealed to prevent combustion gas leakage. |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 mm |
| Reach | 9.5 mm (3/8″) |
| Hex Size | 3/4″ (19 mm) |
| Gap | 0.028″ |
| Material | Nickel |
We at M&M Products are a stocking distributor for Briggs and Stratton, Kohler, Toro dealer.
We not only sell their OEM parts but we also use them on our equipment repairs and rebuilds.
If there is something you need and don’t see it on one of our auctions, please email me through
[email protected] and I can get it in and create an auction for that item.We also ship internationally!
We not only sell their OEM parts but we also use them on our equipment repairs and rebuilds.
If there is something you need and don’t see it on one of our auctions, please email me through
[email protected] and I can get it in and create an auction for that item.We also ship internationally!







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