🏎️ Autolite-AR3910X AR High Performance Racing Non-Resistor Spark Plug: 4-Pack for Optimal Engine Performance Review

Great spark plugs! We use them for my sons' predatory scribbling. Works perfectly! It always starts on the first try, no matter how long it takes.

Great race plug for my Predator 212 engine but the advertising is misleading. The ad shows four forks priced at $5.95, but when you receive your order there is only one fork.

Ideal for Honda vehicles, Honda clones or Predator engines. It ignites on the first pull, no matter where the throttle is installed. Beautiful plug. I don't notice any increase in performance or big changes in performance.

I bought this for my mild 212cc Predator engine. I have stock internals, stock flywheel and 18-pound valve springs. I had issues with the engine running rich, difficult to tune the carburetor and difficult to start with the stock spark plug. I replaced this Autolite and the bike starts much easier and the carburettor is easier to tune due to better spark.

So far so good. I use them in a modified cloned 212 engine on a mini bike. The engine runs a little richer and idles a bit rough with the stock spark plug, but after I swapped it out for one of those spark plugs it runs much better and starts a bit easier too. I definitely recommend these "racing" connectors as an affordable and easy upgrade. The only problem, if you can call it that, is that the picture on the box does NOT match what the forks look like. never mind

Look this is a great product for Jr 2 and up racing karts in combination with a clone or predator. I bought it for a Jr.1 kart and had to change the plug after every race and the kart would stall during hot and special races. I was told it was air due to limited air to run this plugin in Jr.1 class so I switched to Autolite 3922 and my problems went away. It's a good product, don't get me wrong, but it may not work well with limited disk cards. I gifted them to a friend as my son is a grade…

My GX 160 will not start and flames came out of the exhaust. I was looking for sparks, we had them. So I thought it was about time. I have a 10.3 degree ignition key, high pressure piston and connecting rod. So I thought maybe it's too advanced because of the new translation, but no. The sync key was ok. I opened up the crankcase and checked that the cam was properly aligned with the crankshaft. everything was good. Keep in mind that it takes two to about 2 hours to do all of this. Then I…