AUTOLITE
More Information for AUTOLITE 5143
{Alternate Inventory Numbers: 5143BP}
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AUTOLITE 5143  
($1.16/Each)
Price
 $0.00
Core
 + Sold in packs of 1x1
Pack
 $1.16
Total
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AUTOLITE 5143 Specifications
Center Electrode Core MaterialCopper
Center Electrode DesignStandard
Center Electrode Tip MaterialNickel
Electrical Terminal TypeStud
Gap Size0.054"
Gap Size1.4mm
Ground Electrode Core MaterialNickel
Ground Electrode Quantity1
Ground Electrode Tip DesignTapered
Ground Electrode Tip MaterialNickel
Hex Size16mm
Hex Size5/8"
Insulator MaterialCeramic
Reach0.809"
Reach20.5mm
Resistance4000 82
Resistor TypeYes
Seat TypeTapered
Thread Diameter14mm
Tip ConfigurationExtra-Long Projection
Copper Resistor; Pre-Set Gap: 0.054"
Since 1936, Autolite has been a trusted leader and innovator in spark plug technology. You can count on Autolite copper plugs for performance and value, backed by decades of experience and passion.

Features & Benefits:
  • Guaranteed to deliver quick starts, good fuel economy and smooth acceleration.
  • Copper core center electrode for higher thermal conductivity
  • Specially engineered high nickel alloy center and ground electrode for extended life
  • High alumina ceramic for high dielectric strength
  • Leak proof, heat fused internal seal for durability
  • Multi-rib insulator prevents flash-over
This spark plug is pre-gapped, but may require minor adjustments with a Spark Plug Gap Tool / Feeler Gauge to match your engine's specifications. For proper engine performance, gaps should be within ±0.004" of OE-Recommended value.
Which AUTOLITE Spark Plug Is Right For You?

Material / Series Lifespan / Durability Performance / Ignitability Efficiency / Fuel Economy
Copper / Nickel
Copper 		★ ★
Platinum
Platinum		 ★★★ ★★ ★
Double Platinum
Double Platinum		 ★★★★ ★★ ★
Iridium XP
Iridium XP		 ★★★★★ ★★★★★ ★★
Iridium Ultra
Iridium Ultra		 ★★★★★★ ★★★★★ ★★
OEM / Interchange Numbers: 8U2J12405FA

Closeout Inventory Warranty Information:
Wholesaler Closeout items have a 30 day warranty (but still are covered by our Return Policy).

AUTOLITE Regular Inventory Warranty Information:
2 years for Copper Spark Plugs; 4 years for Platinum Spark Plugs; 5 years for Double Platinum Spark Plugs; Limited Lifetime years for Iridium XP Spark Plugs; 5 years for Professional Series Wire Sets; 1 year for Glow Plugs
Warranty Details