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Autolite AR3933

AR-3933 Race Plug

Autolite AR3933
Autolite Rebate® Spark Plug Rebate
Expires on December 31, 2017

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417-AR3933

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Autolite AR3933 AR-3933 Race Plug $4.99
AR-3933 Race Plug

Specifications:

Center Electrode Core Material
Copper
Center Electrode Tip Material
Copper
Insulator Material
Ceramic
Center Electrode Design
Standard / Regular
Thread Size
14mm X 1.25
Seat Style
Gasket
Ground Electrode Tip Material
Copper
Drive Size
5/8" (16mm)
Insulator Type
Short Projection
Reach (in)
3/4"
Resistor
Non Resistor
Gap- Factory Preset
.025"/0.6mm
Manufacturer's Part Number:
AR3933

Autolite Race Plugs feature the latest plug design technology. Their multi-rib insulator, copper center electrode, large cut back ground electrode (covered in nickel plating and sealed inside a longer insulator to resist carbon fouling), and double terminated suppressor provide the best EMI suppression.

NOTE: Plugs are priced individually but may only be ordered in sets of 4.
Spark Plug Heat Ranges & Applications

AR3933 - Autolite Race Series Spark Plugs is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Lots of Spark ! Autolite offers this same reach/heat range plug in both 5/8 and 13/16 hex. The porcelain of the 5/8 hex is shorter and allows more clearance between the headers and spark plug wires.
Date published: 2015-06-05
Rated 5 out of 5 by from Great product What can you say about a spark plug except tha it did its job. I just added a nitrous system to my car and needed a colder plug than what i had been using and these did a great job.
Date published: 2017-07-06
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