AutoliteAR3910X Ar High Performance Racing Non-Resistor Spark Plug, 4-Pack
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AutoliteAR3910X Ar High Performance Racing Non-Resistor Spark Plug, 4-Pack

4.7/5
Product ID: 68566183
Secure Transaction
12 interest-free installments with tabby

Details

  • Brand
    Autolite
  • Core Material
    Nickel
  • Thread Size
    14mm X 1.25
  • Top Material Type
    Alloy Steel
  • Vehicle Service Type
    Car
Cut-back electrode for faster ignition
🔩Precision 14mm x 1.25 thread fit
🏎️Vehicle-specific high-performance design

Description

⚡ Ignite your drive with race-ready precision!

  • TAILORED FIT - 14mm x 1.25 thread size ensures perfect compatibility with your vehicle, eliminating guesswork and installation hassle.
  • TRUSTED QUALITY - Manufactured by FRAM in Mexico, these plugs combine reliability with cutting-edge racing technology.
  • LIGHTWEIGHT POWER - At just 1.92 ounces per plug, these spark plugs deliver high performance without adding bulk.
  • IGNITE WITH PRECISION - Cut-back ground electrode enhances flame kernel ignitability for quicker starts and smoother acceleration.
  • DURABLE ALLOY STEEL TOP - Chrome exterior and alloy steel top provide long-lasting resistance to wear and corrosion under extreme conditions.

The Autolite AR3910X 4-pack spark plugs feature a cut-back ground electrode for improved ignitability, a precise 14mm x 1.25 thread size for vehicle-specific fit, and a durable alloy steel top with chrome exterior. Designed for high-performance racing applications, these lightweight plugs deliver reliable ignition and enhanced acceleration, manufactured by FRAM in Mexico.

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Specifications

BrandAutolite
Core MaterialNickel
Thread Size14mm X 1.25
Top Material TypeAlloy Steel
Vehicle Service TypeCar
Global Trade Identification Number00009100031105
UPC009100031105
ManufacturerFRAM
ModelAR3910X-4PK
Item Weight1.92 ounces
Product Dimensions1.4 x 0.45 x 0.16 inches
Country of OriginMexico
Item model numberAR3910X-4PK
Is Discontinued By ManufacturerNo
ExteriorChrome
Manufacturer Part NumberAR3910X-4PK

Have a Question? See What Others Asked

This spark plug makes my Predator - 212cc engine run very hot compared to a standard spark plug, is it normal to gain 30+ temps using this plug?
What size plug wrench does this plug take?
How much longer are these compared to NGK race plugs extened tip ?
Does it increase horse power

Reviews

4.7

All from verified purchases

M**R

Great Racing product

They were/are great in my high compression race car!

M**R

Clone racing

If you race clone motors in go karts and change the spark plug Weekly this is flat out the best deal you’re gonna find.

D**N

A must have for big-builds

I only have experience with the plug's characteristics in what would be considered 212cc - 264cc open-class motors. Qualifiers would be an aftermarket ignition, .360 or greater valvetrain lift, compression, and ignition timing requiring 100 or better octane, a big valve ported head, and big jets on a big carb.These big-build configurations show a noticeable torque increase across the entire RPM range with the AR3910X plug. The power is diminished if I swap out this plug for an AR3910 or any other transistor plug. I tested a dozen or so spark plugs.I do live in coastal central Florida. So there are times these motors are burning more water than air. You may have different results if you live in a more favorable PA/DA climate.

A**.

running good

the part is good

A**K

Better price on here!

Way better pricing for the same thing from other sites. I see gps selling them for $10/each! You get basically 2 free extra by buying this 4 pack!

J**E

Great

Great

I**N

For My Minibike

A bad spark plug must've been what was causing all of the problems with my minibike cause man, this autolite racing plug WOKE IT UP!!! The engine is a month old so Im not sure if it was the existing plug or not. Regardless, these things sure seem to burn every bit of fuel in the cylinder. Extremely efficiently as well. I'd buy again for sure.

P**S

Works Better Then Expected on My Predator 212

It was a very easy install and It started first pull with it in. I definitely also feel a slight difference in performance a little more torque and I gained 2mph in top speed. Overall an Easy 5 stars and I would recommend buying if your looking for a small and easy Performance boost for ur engine.

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Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Ravi S.

I loved the variety of products available. Will definitely shop again.

2 months ago

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Secure Transaction
12 interest-free installments with tabby

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Autolitear3910x Ar High Performance Racing Non Resistor Spark Plug 4 | Desertcart KSA