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Iridium Ultra Finewire Spark Plug

Part Number AI5243 (153445353)
UPC: 840357600153
Package contents: 4 Each per Each
Select vehicle for guaranteed fit
PERFORMANCE PART
Unavailable

Description

Autolite® Iridium Ultra® is equipped with a laser welded iridium enhanced fine-wire center electrode that ensures your engine runs at maximum performance; while its double precious metal design provides increased durability, allowing your engine to maintain desired performance levels for longer. Iridium Ultra delivers optimal fuel efficiency, acceleration, and ignitability, making it the best OE replacement plug choice for modern engines.

Fitment

This part fits the following vehicles.

  • 2006-2007, 2009-2015 Cadillac CTS
  • 2007-2014 Cadillac Escalade
  • 2007-2014 Cadillac Escalade ESV
  • 2007-2013 Cadillac Escalade EXT
  • 2013 Chevrolet Avalanche
  • 2010-2015 Chevrolet Camaro
  • 2013-2017 Chevrolet Caprice
  • 2006-2013 Chevrolet Corvette
  • 2011-2014 Chevrolet Express 1500
  • 2011-2020 Chevrolet Express 2500
  • 2011-2020 Chevrolet Express 3500
  • 2006-2009 Chevrolet Impala
  • 2016-2020 Chevrolet LCF 3500
  • 1991-1995 Chevrolet Lumina
  • 1995 Chevrolet Monte Carlo
  • 2011-2013 Chevrolet Silverado 1500
  • 2011-2019 Chevrolet Silverado 2500 HD
  • 2011-2019 Chevrolet Silverado 3500 HD
  • 2014-2017 Chevrolet SS
  • 2003-2006 Chevrolet SSR
  • 2013-2014 Chevrolet Suburban 1500
  • 2013 Chevrolet Suburban 2500
  • 2016-2019 Chevrolet Suburban 3500 HD
  • 2010-2014 Chevrolet Tahoe
  • 2013-2014 GMC Savana 1500
  • 2013-2020 GMC Savana 2500
  • 2013-2020 GMC Savana 3500
  • 2013 GMC Sierra 1500
  • 2013-2019 GMC Sierra 2500 HD
  • 2013-2019 GMC Sierra 3500 HD
  • 2013-2014 GMC Yukon
  • 2013-2014 GMC Yukon XL 1500
  • 2013 GMC Yukon XL 2500
  • 1991-1995 Oldsmobile Cutlass Supreme
  • 2009 Pontiac G8
  • 1991-1995 Pontiac Grand Prix

Features & benefits

  • Engineered with an iridium-enhanced laser-welded fine-wire center electrode that provides focused ignition, optimal ignitability, and maximum performance.
  • Its proprietary platinum ground electrode provides increased durability and resistance to wear, extending the life of the plug.
  • The tapered ground wire enhances ignitability for improved combustion and performance.
  • The high alumina ceramic multi-rib insulator insulator provides thermal conductivity and superior insulation for increased strength & prevents flash-over.
  • The copper core within the plug provides reliable performance with higher thermal conductivity.
  • Includes a lifetime limited warranty that guarantees optimum performance equal to OE designed plugs.

Specifications

Center Electrode Core Material Copper
Center Electrode Design Fine Wire
Center Electrode Projection Long Projection
Center Electrode Tip Material Iridium
Country Of Origin MX
Electrical Terminal Type Non-Removable Nut
Grade Type Performance
Ground Electrode Core Material Nickel
Ground Electrode Quantity 1
Ground Electrode Tip Design Taper Cut
Ground Electrode Tip Material Platinum
Hex Size 5/8 in
Hex Type Hex
Indexed No
Insulator Material Ceramic
Manufacturer Heat Range 10
Resistance 4000 82
Resistor Type Yes
Seat Type Tapered
Skirt Yes
Street Legal Yes
Thread Diameter 14 mm
Thread Size M14 - 1.25
Thread Type Standard Metric
Washer(s) Included No

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