Name: Autolite AR3910 14mm Racing Spark Plug-5/8 Hex-Gasket-3/4 Reach-Cold
Brand: Autolite
SKU: 3733910
Price: 6.19 USD
Availability: Discontinued

Product Summary

Gasket Spark Plug Seat Style, Gasket Seat Taper

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Key Specs

MFG. Part #	AR3910
Brand	Autolite
Thread Pitch	14mm

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Need To Know

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Autolite AR3910 Details

Autolite Racing spark plugs feature a cut back ground electrode, anti-corrosive nickel plating, and large ground electrode for better heat transfer. Heat range needed with Standard tip or Power tip Coldest.

14 mm plug
.75" reach
5/8" hex
Gasket seat
Non-resistor
Vendor Number: AR3910

Item Details

Coldest
Power Tip
Vendor Part Number AR3910

Please use the Vendor Number to reference the PDF chart links listed.

Application

Spark Plug Application Chart

Charts

Heat Range Chart (PDF)

Racing Plug Tech Note (PDF)

Understanding Heat Range (PDF)

Autolite Cross Reference Chart (PDF)

Guides & Documents

Spark Plugs Technical Information (3733910)

Performance Spark Plug Buyer’s Guide

Spark Plugs Technical Information (3733910)

CARB Warning

For race/ off road use only

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

CARB warning

Autolite AR3910 Specifications

KEY SPECS
MFG. Part #	AR3910
Brand	Autolite
Thread Pitch	14mm

GENERAL
Spark Plug Seat Style	Gasket
Seat Taper	Gasket
Spark Plug Reach	0.75"
Resistor	No
Insulator Type	Projected
Spark Plug Heat Range	3
Core Material	Copper
Tip Material	Nickel Alloy
Overall Length	14.00"
Wrench Size	5/8"
Sold in Quantity	Each
Notes	Cold
GTIN Code	00009100017802

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