ACDelco 18 | Spark Plug

Part Number
Spark Plug

Fits: Acura EL, Audi 100 Quattro, Audi 90 Quattro, Audi A4, Audi A4 Quattro, Audi A6, Audi A6 Quattro, Audi A8 Quattro, Audi Q7, Audi S5, Audi S6, Audi S8, Bentley Continental, BMW 323Ci, BMW 325i, BMW 325is, BMW 325xi, BMW 328is, BMW 330Ci, BMW 330i, BMW 330xi, BMW 525i, BMW 530i, BMW 540i, BMW 550i, BMW 650i, BMW 740i, BMW 740iL, BMW 750i, BMW 750Li, BMW 840Ci, BMW M3, BMW X5, Cadillac CTS, Chevrolet Astra, Chevrolet Aveo, Chevrolet Aveo5, Chevrolet Prizm, Chevrolet Sonic, Chevrolet Trax, Chrysler 300, Chrysler 300M, Chrysler Concorde, Chrysler Intrepid, Chrysler Pacifica, Chrysler Prowler, Chrysler Sebring, Dodge Avenger, Dodge B1500, Dodge B2500, Dodge B3500, Dodge Challenger, Dodge Charger, Dodge Dakota, Dodge Durango, Dodge Intrepid, Dodge Journey, Dodge Magnum, Dodge Nitro, Dodge Ram 1500, Dodge Ram 1500 Van, Dodge Ram 2500, Dodge Ram 2500 Van, Dodge Ram 3500, Dodge Ram 3500 Van, Dodge Ramcharg

Special Price $9.00 Regular Price $12.99
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ACDelco Gold (Professional) RAPIDFIRE Spark Plugs are a high quality alternative to Original Equipment (OE) parts. These RAPIDFIRE Single Platinum Performance Spark Plugs are designed for everyday use and are a high quality replacement for many vehicles on the road today. These premium aftermarket spark plugs have high-quality suppressors that help prevent misfiring, an improved plug to boot seal, and a pure copper core for greater durability. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ? WARNING: Cancer and Reproductive Harm -



  • Acura;Audi;Bentley;BMW;Cadillac;Chevrolet;Chrysler;Dodge;Ford;Honda;Jeep;Mazda;Mercedes-Benz;Mitsubishi;Pontiac;Ram;Rolls-Royce;Saab;Ski-Doo;Suzuki;Toyota;Volkswagen
  • Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models
  • Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system
  • Premium aftermarket replacement part
  • Pure copper core provides great heat transfer and helps maximize plug durability
  • Ribless insulator helps optimize plug to boot seal
  • Solid state suppressor, with two-piece glass and brass seal, can help reduce radio frequency interference, regulates spark energy for long electrode life, and helps protect against high combustion pressures
  • Some ACDelco Gold parts may have formerly appeared as ACDelco Professional


Center Electrode Tip MaterialPlatinum
FAQ - Answer 1Yes, this interval depends on what type of spark plug your vehicle requires. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
FAQ - Answer 2Yes, if it is the scheduled time for spark plug replacement. It is okay to replace one spark plug if it is fouled or damaged prior to scheduled maintenance, provided the source of the damage is found and corrected.
FAQ - Answer 3Yes. Diesel engines require glow plugs because diesel engines operate differently than gas engines. ACDelco Professional Glow Plugs are specially designed to give diesel engines the heat they need for their cold starts. Refer to your owner's manual or contact your vehicle's manufacturer for more information.
FAQ - Answer 4Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification.
FAQ - Answer 5Not always, but you should inspect your spark plug wires for wear when replacing your spark plugs. Refer to your vehicle owner's manual or contact the manufacturer for more information.
FAQ - Answer 6Yes, pre-ignition can cause serious damage to your engine. Pre-ignition is the ignition of fuel before the actual spark occurs, which causes a rapid temperature rise in the combustion chamber that can damage engine components and melt spark plug electrodes. Causes of pre-ignition include but are not limited to a buildup of deposits that can become incandescent in the combustion chamber, improper installation torque being applied to spark plugs, and having spark plugs with a heat range that is too hot for the engine's operating condition.
FAQ - Answer 7No, cleaning your old spark plugs is not recommended. Dirty, fouled spark plugs may also have broken or chipped insulator tips, worn electrodes, or worn or missing side wires. These conditions severely affect spark plug performance. Replace your dirty, fouled spark plugs with new ACDelco spark plugs.
FAQ - Answer 8Yes, ACDelco has marine spark plugs for many applications.
FAQ - Question 1Is there a recommended interval for changing my vehicle's spark plugs?
FAQ - Question 2Should I change all of my vehicle's spark plugs at the same time?
FAQ - Question 3Does a diesel engine require a different type of plug than a gas engine?
FAQ - Question 4Are ACDelco spark plugs pre-gapped?
FAQ - Question 5When I replace my spark plugs, should I also replace my spark plug wires?
FAQ - Question 6What is pre-ignition and can it damage my engine?
FAQ - Question 7Can I just clean my spark plugs instead of replacing them?
FAQ - Question 8Does ACDelco have marine spark plugs?
Good Maintenance Practices - Section 1 - Bullet 1Grasp the spark plug boot and gently rotate it 90 degrees counterclockwise. Pull the spark plug boot and cable away from the spark plug. If necessary, use a spark plug boot removing tool. DO NOT grab or violently pull spark plug cables.
Good Maintenance Practices - Section 1 - Bullet 2Brush or air blast dirt away from the well areas before removing spark plugs. CAUTION: Use goggles to protect eyes from debris when applying compressed air to spark plug wells.
Good Maintenance Practices - Section 1 - Bullet 3Use the correct deep socket size to loosen each spark plug one or two turns. NOTE: To remove spark plugs from aluminum heads, allow the engine to cool. The heat of the engine, in combination with a spark plug that is still hot, may cause the spark plug threads to strip the cylinder head upon removal.
Good Maintenance Practices - Section 1 - Bullet 4Remove each spark plug and place each one in a tray by cylinder number. This will help identify and relate any unusual condition to the cylinder involved.
Good Maintenance Practices - Section 1 - Bullet 5Apply dielectric grease into the boot area to reduce the chance of exterior tracking on the buttress tower of the spark plug. This grease also promotes a good heat transfer between the spark terminal screw and boot terminal.
Good Maintenance Practices - Section 1 - Bullet 6Before installing new spark plugs, use a gap guide to make sure your new spark plugs have the correct gap. NOTE: ACDelco Professional Iridium Spark Plugs are pre-gapped during manufacturing. Never attempt to gap an ACDelco Professional Iridium Spark Plug. You could damage the spark plug. Replace any incorrectly gapped ACDelco Professional Iridium Spark Plugs with plugs that are correctly gapped.
Good Maintenance Practices - Section 1 - Bullet 7Install spark plugs or glow plugs to the proper torque per the manufacturers' specification.
Good Maintenance Practices - Section 1 - HeaderVisually inspect spark plugs for signs of wear. Follow these steps for removing spark plugs for inspection, servicing or replacement:
Ground ConfigurationNone
Ground Electrode Quantity1
Ground Electrode Tip DesignNone
Height (in)1.19
Hex Size (mm)16
Length (in)4.13
Manufacturer Heat Range12
Programming RequiredNo
Resistor TypeYes
Seat TypeFlat
Signs of Wear & Troubleshooting - Section 1 - Bullet 1Your engine having trouble starting, hesitating, or cutting out
Signs of Wear & Troubleshooting - Section 1 - Bullet 2Sluggish engine performance, loss of engine power, or decreased fuel economy
Signs of Wear & Troubleshooting - Section 1 - Bullet 3Lack of acceleration or loss of speed when driving uphill under load
Signs of Wear & Troubleshooting - Section 1 - Bullet 4Cracks in the upper or lower portion of the spark plug insulator
Signs of Wear & Troubleshooting - Section 1 - Bullet 5Chipped or broken insulator tips
Signs of Wear & Troubleshooting - Section 1 - Bullet 6Damaged spark plug boots
Signs of Wear & Troubleshooting - Section 1 - HeaderSigns of wear for spark plugs include but are not limited to:
Weight (lb)0.4
Width (in)3.62

Engine Designation FDE



  • 2001-2006 BMW 330Ci
  • 1988-1991 Mazda 929
  • 2003-2004 Cadillac CTS
  • 2004-2013 Rolls-Royce Phantom
  • 1998-2004 Chrysler Intrepid
  • 2010-2010 Ski-Doo Renegade 600 Backcountry
  • 1994-1995 BMW 530i
  • 1993-1995 BMW 740i
  • 2000-2003 Chevrolet Astra
  • 2009-2009 Pontiac G3 Wave
  • 1997-1997 BMW 740i
  • 1988-1992 Mazda MX-6
  • 2000-2001 Volkswagen Golf
  • 2006-2010 BMW 550i
  • 1987-1989 Volkswagen Jetta
  • 2005-2010 Honda Odyssey
  • 2011-2014 Ski-Doo MX Z X-RS E-TEC 600 HO
  • 2011-2014 Ski-Doo Renegade X E-TEC 600 HO
  • 1994-1997 Saab 900
  • 1994-1997 BMW 840Ci
  • 2007-2009 Audi S8
  • 2006-2008 BMW 750Li
  • 2004-2009 Volkswagen Touareg
  • 2005-2010 Jeep Grand Cherokee
  • 2005-2009 Ski-Doo GTX 600 Limited
  • 1998-2009 Dodge Durango
  • 2011-2014 Ski-Doo Skandic WT E-TEC 600 HO
  • 2007-2010 Audi Q7
  • 2013-2015 Chevrolet Trax
  • 2011-2014 Ski-Doo MX Z TNT E-TEC 600 HO
  • 2001-2005 BMW 325i
  • 2010-2010 Ski-Doo Grand Touring 600 LE
  • 2015-2016 Mitsubishi Outlander Sport
  • 2002-2004 Chrysler 300M
  • 1999-2003 Dodge Ram 2500 Van
  • 2012-2014 Ski-Doo GSX SE E-TEC 600 HO
  • 2006-2008 BMW 750i
  • 2000-2012 Audi A8 Quattro
  • 1989-1992 Ford Probe
  • 1992-2001 Honda Prelude
  • 1993-1997 Dodge Intrepid
  • 2011-2014 Ski-Doo MX Z X E-TEC 600 HO
  • 1999-2001 Dodge Ramcharger
  • 2001-2005 BMW 330xi
  • 1987-1989 Volkswagen Golf
  • 1994-1995 BMW M3
  • 1997-2005 Acura EL
  • 2009-2010 Dodge Challenger
  • 1998-2002 Dodge Ram 2500
  • 2005-2008 Dodge Magnum
  • 2007-2012 Dodge Nitro
  • 1997-2003 Dodge Ram 1500 Van
  • 2012-2015 Chevrolet Sonic
  • 1998-2002 Dodge Ram 3500
  • 2001-2005 Honda Civic
  • 2008-2012 Audi S5
  • 2012-2014 Ski-Doo Skandic SWT E-TEC 600 HO
  • 1997-1998 Dodge B2500
  • 1997-2010 Dodge Ram 1500
  • 2004-2008 Suzuki Forenza
  • 2002-2004 Chrysler Concorde
  • 2011-2011 Ram Dakota
  • 2004-2010 BMW X5
  • 2011-2014 Ski-Doo Renegade Backcountry E-TEC 600 HO
  • 2012-2014 Ski-Doo GSX LE E-TEC 600 HO
  • 2003-2011 Honda Element
  • 1999-2003 Dodge Ram 3500 Van
  • 1986-1988 Volkswagen Scirocco
  • 1999-2001 Volkswagen Jetta
  • 2000-2004 Dodge Intrepid
  • 2006-2008 Honda Ridgeline
  • 2011-2014 Ski-Doo Expedition SE E-TEC 600 HO
  • 1989-1989 Mazda MPV
  • 2009-2009 Ski-Doo Summit 600 Everest
  • 1991-1995 BMW 525i
  • 2006-2010 Jeep Commander
  • 2005-2010 Chrysler 300
  • 2012-2012 Toyota Corolla
  • 2009-2010 Pontiac G3
  • 1997-1998 Dodge B3500
  • 2011-2012 Ram 1500
  • 1992-1994 Audi 100 Quattro
  • 2007-2011 Audi S6
  • 2007-2010 Chrysler Sebring
  • 2009-2010 Volkswagen Routan
  • 2006-2008 Audi A6
  • 2012-2014 Ski-Doo Summit SP E-TEC 600 HO 154
  • 1998-1999 Chevrolet Prizm
  • 2002-2012 Jeep Liberty
  • 1998-2000 Mercedes-Benz C230
  • 2003-2003 Volkswagen Beetle
  • 1996-1999 BMW 328is
  • 2004-2006 Chrysler Pacifica
  • 2010-2010 Ski-Doo Renegade 600 X
  • 2006-2010 Dodge Charger
  • 2010-2010 Ski-Doo Expedition 600 SE
  • 1994-1995 BMW 540i
  • 2009-2010 Dodge Journey
  • 2006-2010 BMW 650i
  • 2001-2005 BMW 530i
  • 2008-2010 Dodge Avenger
  • 2010-2010 Ski-Doo Renegade 600 Adrenaline
  • 2000-2011 Audi A6 Quattro
  • 2011-2014 Ski-Doo Expedition LE E-TEC 600 HO
  • 2011-2014 Ski-Doo Renegade Adrenaline E-TEC 600 HO
  • 2002-2002 Mercedes-Benz C230
  • 2009-2015 Chevrolet Aveo
  • 1998-2001 Volkswagen Beetle
  • 2005-2008 Suzuki Reno
  • 2012-2012 Ski-Doo Tundra Extreme E-TEC 600 HO
  • 2007-2011 Ski-Doo GSX 600 Limited
  • 2004-2012 Bentley Continental
  • 2007-2013 Honda Fit
  • 1995-1997 Saab 9000
  • 2001-2005 BMW 325xi
  • 2012-2014 Ski-Doo Summit SP E-TEC 600 HO 146
  • 2011-2014 Ski-Doo Renegade Backcountry X E-TEC 600 HO
  • 2009-2011 Chevrolet Aveo5
  • 1997-2003 BMW 540i
  • 1997-1998 Dodge B1500
  • 1993-1997 BMW 740iL
  • 2006-2008 Honda Pilot
  • 1992-1995 BMW 325is
  • 2006-2008 Audi A4
  • 1993-2005 Volkswagen Passat
  • 2000-2000 BMW 323Ci
  • 1993-1995 Audi 90 Quattro
  • 1997-2012 Dodge Dakota
  • 2001-2002 Chrysler Prowler
  • 2011-2011 Ski-Doo Summit Everest E-TEC 600 HO
  • 2001-2005 BMW 330i
  • 1992-1995 BMW 325i
  • 2005-2008 Audi A4 Quattro
Customer Questions
Does AC Delco make Ford parts?
No, AC Delco produces parts primarily for General Motors vehicles and does not make parts specifically for Ford vehicles.
Can I use AC Delco parts to replace OEM parts?
Yes, in most cases AC Delco parts can be used as a replacement for OEM parts. However, it's important to ensure that the parts are compatible with your specific make and model of vehicle.
What AC Delco oil filter do I need?
AC Delco offers a variety of oil filters that are compatible with different makes and models of vehicles. To determine which AC Delco oil filter you need, consult your vehicle's owner's manual or use our online filter lookup tool that matches the make, model, and year of your vehicle.
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