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Autolite AR3910 4PK Performance Racing Non Resistor Review

1

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Excellent

Revainrating 5 out of 5  
Rating 
5.0
🧯 Ignition Parts, 🛠️ Replacement Parts

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Details

BrandAutolite
Core MaterialNickel
Top Material TypeAlloy Steel
Vehicle Service TypeCar

Description of Autolite AR3910 4PK Performance Racing Non Resistor

Replacement racing spark plug used by many professional car drivers. Specifically designed with colder heat ranges than the factory plug to enable performance modifications and handle intense conditions. Contains an Yttrium-enhanced alloy to enable up to 8% reduction in side wire temperature for improved durability and less pre-ignition. Features cut back ground electrode for improved ignitability of flame kernel. Coated in an anti-corrosive nickel plating to prevent rusting.

Reviews

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Type of review

Revainrating 5 out of 5

what is colder on Spark Plugs and Wires

Used these in my VW 2.0 at max timing and high octane but still needed some cooler. I called Autolite 855.200.5200 and spoke to Marty. He told me that the AR3910 would be colder, in order would be AR3932 and AR3931. 31 is the coldest connector they make in this configuration - thread size, key size etc. AR3933 has the same heat range as 3910 but without the extended tip that 3911 and 3910 have. In that sense, 3911 is hotter than 3910. 33, 32, and 31 have a standard tip, not extended. Marty…

Pros
  • Spark Plugs and Wires
Cons
  • Quality