


⚡ Ignite your marine engine’s true potential with Quicksilver precision!
The Quicksilver 816336Q NGK BPR6EFS spark plug is engineered for marine engines, featuring OEM pre-gapped precision, corrosion-resistant trivalent plating, and a high-strength ceramic insulator. It delivers reliable ignition, reduces misfires, and ensures smoother idling, making it the trusted choice for professional-grade marine performance.





| ASIN | B00N6DEEGY |
| Best Sellers Rank | #158,962 in Automotive ( See Top 100 in Automotive ) #1,110 in Automotive Performance Spark Plugs |
| Brand | Quicksilver |
| Customer Reviews | 4.8 4.8 out of 5 stars (144) |
| Date First Available | 21 March 2015 |
| Item Weight | 23 g |
| Item model number | 33-816336Q |
| Manufacturer | Quicksilver |
| Manufacturer Part Number | 33-816336Q |
| Model | 816336Q NGK BPR6EFS Standard Spark Plug, 1-Pack |
| OEM Part Number | 816336Q |
| Position | Front, Rear |
| Product Dimensions | 30.48 x 10.16 x 25.4 cm; 23 g |
C**S
Bought these to replace the ACDelco MR43LTS for my 1996 boat with a 4.3 engine. I installed the AC plugs and started having problems with dieseling after pulling a skier or a tube. I’m not saying these completely eliminated the problem but it certainly improved it. I think the AC plugs run a little hotter. These just work better.
T**5
QuickSilver is well known for their quality marine components so it is no surprise that after installing 4 of these new spark plugs into my Mercruiser 3.0L the engine seems to be running much smoother and is way better at idle than it was last season. Quality product with quick delivery.
Y**N
Bonne Spag plug et la livraison impeccable
T**K
Packaged and high quality as expected.
M**R
These plugs never let me down I make some pretty long runs fishing and need reliable. Never had one skip a beat I usually replace every 3 years but the last set went 5 . Boat only runs 4 months out of the year but is run hard
Trustpilot
3 weeks ago
1 month ago