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Autolite Copper Resistor Spark Plug Review

2

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Average

Revainrating 3.5 out of 5  
Rating 
3.7
🧯 Ignition Parts, 🛠️ Replacement Parts

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Description of Autolite Copper Resistor Spark Plug

Copper-glass seal bonds insulator, terminal post, and center electrode together to provide a tight seal that is 100 percent leak-proof. Cold-formed steel shell and precision rolled threads, with one-piece terminal post to add strength. Multi-rib insulator reduces danger of "flash-over". Resistor reduces radio frequency interference (RFI) and electrode erosion. Full copper core electrode provides better performance in all conditions.

Reviews

Global ratings 2
  • 5
    1
  • 4
    0
  • 3
    0
  • 2
    0
  • 1
    1

Type of review

Revainrating 5 out of 5

Excellent Performance Spark Plug

As a result of my tests I determined that this spark plug delivers reliable ignition and improved fuel efficiency. The copper resistor design ensures better conductivity for a smoother ride. The only downside is that it may not be suitable for high-performance engines..

Pros
  • Reliable ignition, improved fuel efficiency
Cons
  • Not suitable for high-performance engines

Revainrating 1 out of 5

NOT for Small Engines

Spark Plug 386 IS AN EXCELLENT SPARK PLUG BUT THE THREAD SIZE IS VERY LARGE AND WILL NOT FIT ANY KNOWN SMALL ENGINE. I HAVE USED THEM ON FORD AND CONTINENTAL (RED SEAL) ENGINES.

Pros
  • Automotive
Cons
  • Operating Speed