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Spark Plug Autolite
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Spark Plug (Autolite) for 1987-2015 Avanti, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Oldsmobile, Pontiac, Saab, & Workhorse

$18.47
Save up to 80% vs List Price!

ℹ️ Product Notes

⚠️ Most jobs typically require 8 of this item.
Gap .043 (in)
Iridium XP Spark Plug
Autolite® Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.
Brand: Autolite
Condition: New
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120-Day Returns
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Insurance-Grade Quality

🛡️ Lifetime Warranty Included

This part comes with our industry-leading lifetime warranty. Shop with confidence!

SKU #
F18C9F1
  • New Condition
  • Autolite Quality
  • Easy Installation - No Modifications
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Product Specifications


Detailed specifications and attributes for this part:

Attribute Value
Center Electrode Core Material Copper
Center Electrode Design Fine Wire
Center Electrode Insulator Tip Projection 0.19, 4.83
Center Electrode Projection Long Projection
Center Electrode Tip Material Iridium
Core Nose Length 0.449, 11.4
Electrical Terminal Type Non-removable Nut
Grade Type Performance
Ground Electrode Quantity 1
Ground Electrode Tip Design Taper Cut
Ground Electrode Tip Material Platinum
Hex Size 5/8
Hex Type Hex
Indexed No
Insulator Height 2.026, 51.46
Insulator Material Ceramic
Pre Gap Size 0.044, 1.12
Reach 0.679, 17.25
Resistance 4000
Resistor Type Yes
Seat Type Tapered
Washer Included No

Vehicle Fitment Guide

This part fits the following vehicles:

Make Models
Avanti II
Buick Allure, Century, LaCrosse, Rainier, Regal, Skyhawk, Skylark
Cadillac Cimarron, CTS, Escalade, Escalade ESV, Escalade EXT
Chevrolet Avalanche, Avalanche 1500, Avalanche 2500, Beretta, Camaro, Caprice, Cavalier, Celebrity, Colorado, Corsica, Corvette, Express 1500, Express 2500, Express 3500, LLV, Lumina, Monte Carlo, S10, Silverado 1500, Silverado 1500 Classic, Silverado 1500 HD, Silverado 1500 HD Classic, Silverado 2500, Silverado 2500 HD, Silverado 2500 HD Classic, Silverado 3500 Classic, Silverado 3500 HD, Suburban 1500, Suburban 2500, Tahoe, Trailblazer, Trailblazer EXT
GMC Canyon, Envoy, Envoy XL, Envoy XUV, Savana 1500, Savana 2500, Savana 3500, Sierra 1500, Sierra 1500 Classic, Sierra 1500 HD, Sierra 1500 HD Classic, Sierra 2500, Sierra 2500 HD, Sierra 2500 HD Classic, Sierra 3500, Sierra 3500 Classic, Sierra 3500 HD, Sonoma, Yukon, Yukon XL 1500, Yukon XL 2500
Hummer H2, H3, H3T
Isuzu Ascender, Hombre
Oldsmobile Achieva, Cutlass Ciera, Cutlass Cruiser, Cutlass Supreme, Firenza
Pontiac 6000, Firebird, G8, Grand Am, Grand Prix, GTO, Sunbird, Sunfire, Tempest
Saab 9-7x
Workhorse FasTrack FT1061, FasTrack FT1261, FasTrack FT1461, FasTrack FT1601, FasTrack FT1801

This is a universal part that fits 2,226 vehicle configurations across 11 makes.

⚠️ Important: Please verify your vehicle's year, make, model, and specifications before ordering. If you're unsure about fitment, contact our customer service team for assistance.

Policies

Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.

More Information


Autolite® Iridium XP spark plugs are engineered with an iridium-enhanced fine-wire and a proprietary, platinum ground electrode, to increase durability*, while its tapered ground wire maximizes engine efficiency, delivering improved engine performance, fuel efficiency, acceleration, and ignitability.

Interchange Parts

Brand Part Number
ACDelco 41-162
ACDelco 41-985
Bosch HR9LI33U
NGK TR4-2IX
NGK TR4IX
Omnicraft QSP-4

Fits Years: 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

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