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(888) 312-8812 Login SignupACDELCO 21 RAPIDFIRE Spark Plug
$599
Limited availability at this price!
In Stock
Get it by Thursday, Feb 26
ACDELCO 21 Part Description
ACDELCO 21 Specifications
Product Attributes
| Weight (lb) | 0.4 lb |
| Pre-Gap Size | 0.045 IN |
| Thread Diameter | 0.551 IN |
| Ground Electrode Quantity | 1 |
| Height (in) | 1.19 in |
| Center Electrode Design | Standard |
| Reach | 1.043 IN |
| Insulator Height | 2.047 IN |
| Width (in) | 3.62 in |
| Length (In) | 4.13 IN |
| Manufacturer Heat Range | 8 |
| Hex Size (mm) | 16 MM |
| Reach | 26.5 MM |
| Insulator Height | 52 MM |
| Core Nose Length | 0.560 IN |
| Product Description | 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. ⚠<b> WARNING:</b> Cancer and Reproductive Harm - www.P65Warnings.ca.gov |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 4 | Lack of acceleration or loss of speed when driving uphill under load |
| FAQ - Question 4 | Are ACDelco spark plugs pre-gapped? |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 3 | Sluggish engine performance, loss of engine power, or decreased fuel economy |
| FAQ - Answer 2 | Yes, if it is the scheduled time for spark plug replacement. |
| FAQ - Question 7 | Can I just clean my spark plugs instead of replacing them? |
| FAQ - Question 3 | Does a diesel engine require a different type of plug than a gas engine? |
| FAQ - Question 8 | Does ACDelco have marine spark plugs? |
| Center Electrode Core Material | Copper |
| FAQ - Answer 3 | Yes. 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. Contact your local dealer, ACDelco service center, or refer the manufacture’s service information. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 2 | Engine misfire |
| FAQ - Question 1 | Is there a recommended interval for changing my vehicle's spark plugs? |
| Features & Benefits - Bullet 7 | Manufactured to meet specifications for fit, form, and function for General Motors vehicles as well as most makes and models |
| FAQ - Answer 7 | No, 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. |
| Ground Electrode Tip Design | Standard |
| Ground Configuration | Standard |
| FAQ - Answer 5 | Not 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. |
| Center Electrode Tip Material | Platinum |
| Features & Benefits - Bullet 3 | Platinum on center electrode enables superior spark characteristics and can reduce voltage requirements of the ignition system |
| Features & Benefits - Bullet 6 | Premium aftermarket replacement part |
| Features & Benefits - Bullet 2 | Pure copper core provides great heat transfer and helps maximize plug durability |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 5 | Cracks in the upper or lower portion of the spark plug insulator |
| FAQ - Question 2 | Should I change all of my vehicle's spark plugs at the same time? |
| Signs of Wear & Troubleshooting - Section 1 - Header | Signs of wear for spark plugs include but are not limited to: |
| Features & Benefits - Bullet 1 | 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 |
| Features & Benefits - Bullet 5 | Some ACDelco Gold parts may have formerly appeared as ACDelco Professional |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 6 | Chipped or broken insulator tips |
| FAQ - Question 6 | What is pre-ignition and can it damage my engine? |
| FAQ - Question 5 | When I replace my spark plugs, should I also replace my spark plug wires? |
| Resistor Type | Yes |
| FAQ - Answer 8 | Yes, ACDelco has marine spark plugs for many applications. |
| Features & Benefits - Bullet 4 | Ribless insulator helps optimize plug to boot sea |
| FAQ - Answer 6 | Yes, 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 1 | Yes, 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 4 | Yes. When ACDelco spark plugs are manufactured, they are pre-gapped to the correct gap specification. |
| Signs of Wear & Troubleshooting - Section 1 - Bullet 1 | Your engine having trouble starting, hesitating, or cutting out |
| Electrical Terminal Type | Non-Removable Nut |
| Ground Electrode Core Material | Nickel |
| Ground Electrode Tip Material | Nickel |
| Hex Type | Hex |
| Indexed | No |
| Pre-Gap Size | 1.100 MM |
| Seat Type | Flat |
| Skirt | No |
| Thread Diameter | 14.0 MM |
| Washer(s) Included | Yes |
| Washer Type | Crush |
| Indicated Mean Effective Pressure (IMEP) | 270 4S |
Additional Information
| Warranty Special | 7 Years/Unlimited Miles Limited Warranty (Parts Only). Please see ACDelco.com for more details|84 Months/100,000 Kilometers Limited Warranty (whichever ever comes first, parts Only). Please see ACDelcocanada.com for more details |
| Harmonized Tariff Code (HTS) | 8511100000 |
| Country of Origin (Primary) | US |
| Warranty Special UOM | TX |
| UPC | 00808709301585 |
ACDELCO 21 Cross References
ACDELCO 21 Fits Vehicles
- Volvo XC60 (2010-2016)
- Volvo C30 (2007-2013)
- Volvo V50 (2005-2011)
- Volvo S60 Cross Country (2016)
- Volvo V60 Cross Country (2015-2016)
- Volvo V60 (2015-2016)
- Volvo XC90 (2007-2014)
- Volvo XC70 (2008-2016)
- Volvo V70 (2004-2010)
- Volvo S80 (2007-2015)
- Volvo S60 (2004-2009, 2011-2016)
- Volvo S40 (2004-2011)
- Volvo C70 (2006-2013)
- Scion tC (2011-2013)
- Lotus Evora (2010-2014, 2016-2017)
- Toyota FJ Cruiser (2007-2014)
- Toyota Venza (2009-2016)
- Toyota Tacoma (2005-2015)
- Toyota Sequoia (2008-2021)
- Toyota Tundra (2005-2021)
- Toyota RAV4 (2006-2012)
- Toyota Sienna (2007-2016)
- Toyota Land Cruiser (2008-2011, 2013-2021)
- Toyota Camry (2007-2017)
- Toyota Avalon (2005-2018)
- Toyota Highlander (2008-2016)
- Toyota 4Runner (2003-2013)
- Lexus GS300 (2006)
- Lexus RX450h (2010-2015)
- Lexus IS F (2008-2014)
- Lexus GS460 (2008-2011)
- Lexus LX570 (2008-2011, 2013-2021)
- Lexus LS600h (2008-2016)
- Lexus LS460 (2007-2016)
- Lexus GS350 (2007-2011, 2013-2015)
- Lexus RX350 (2007-2015)
- Lexus GS450h (2007-2011, 2013-2017)
- Lexus ES350 (2007-2018)
- Lexus IS350 (2006-2016)
- Lexus IS250 (2006-2015)
- Lexus RC F (2015-2017)
- Lexus RC350 (2015)
- Lexus GX460 (2010-2021)
- Mitsubishi Outlander (2004-2006)
- Mitsubishi Eclipse (2006-2012)
- Mitsubishi Galant (2004-2012)
- Mitsubishi Lancer (2004-2006)
- INFINITI FX45 (2003-2008)
- INFINITI FX35 (2003-2008)
- INFINITI QX4 (2001-2003)
- INFINITI M45 (2003-2004, 2006-2010)
- INFINITI I35 (2002-2004)
- INFINITI G35 (2003-2007)
- INFINITI M35 (2006-2008)
- Nissan Xterra (2005-2006)
- Nissan Sentra (2000-2006)
- Nissan Pathfinder (2001-2006)
- Nissan Maxima (2002-2008)
- Nissan Altima (2002-2006)
- Nissan Micra (2005-2007)
- Nissan X-Trail (2002-2007)
- Nissan TITAN (2004-2006)
- Saab 9-5 (2010-2011)
- Saab 9-3 (2006-2009)
- Saab 9-2X (2006)
- Saab 9-4X (2011)
- Mercedes-Benz SL55 AMG (2003-2008)
- Mercedes-Benz S55 AMG (2003-2006)
- Mercedes-Benz G55 AMG (2005-2011)
- Mercedes-Benz E55 AMG (2003-2006)
- Mercedes-Benz CL55 AMG (2003-2006)
- Mercedes-Benz C230 (2003-2005)
- Mercedes-Benz CLS55 AMG (2006)
- Mercedes-Benz SLR McLaren (2005-2009)
- Honda Insight (2000-2006, 2010-2014)
- Honda Civic (2006-2015)
- Acura ILX (2013-2015)
- Ford Focus (2007-2008, 2010-2011)
- Chevrolet Vectra (2006-2008)
- Cadillac SRX (2010-2011)
- Jeep Cherokee (2014-2016)
- Dodge Attitude (2015-2017, 2019-2020)
- Hyundai Genesis Coupe (2010-2014)
- Hyundai Genesis (2009)
- BMW 328i xDrive (2009-2013)
- BMW 528i xDrive (2009-2010)
- BMW 128i (2008-2013)
- BMW 528xi (2008)
- BMW 328xi (2007-2008)
- BMW 525xi (2006-2007)
- BMW 530xi (2006-2007)
- BMW X3 (2007-2012)
- BMW Z4 (2006-2011)
- BMW X5 (2007-2010)
- BMW 530i (2006-2007)
- BMW 528i (2008-2011)
- BMW 525i (2006-2007)
- BMW 330xi (2006)
- BMW 330i (2006)
- BMW 328i (2007-2013)
- BMW 325xi (2006)
- BMW 325i (2006)
- BMW 323i (2006-2011)
- Kia Forte5 (2012-2013)
- Porsche 911 (2010-2015)
- Suzuki Vitara (2016-2017, 2019-2020)
- Suzuki Swift (2013-2014, 2016-2017)
- Suzuki Equator (2009-2012)
- Suzuki SX4 (2014)
- Suzuki Grand Vitara (2009-2017)
- Subaru Outback (2001-2019)
- Subaru Tribeca (2008-2014)
- Subaru Legacy (2005-2019)
- Subaru Impreza (2004-2014)
- Subaru Forester (2004-2013)
- Subaru B9 Tribeca (2006-2007)
- Subaru WRX STI (2013-2016)
- Suzuki S-Cross (2014-2016, 2018-2019)
- Yamaha XBT1800 212X (2017-2018)
- Yamaha XBT1800 212 Limited S (2017-2018)
- Yamaha XBT1800 212 Limited (2017-2018)
- Yamaha RP1800 SX195 (2017-2018)
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- Yamaha SAT1800 242 Limited E Series (2016-2017)
- Yamaha SAT1800 242 Limited S E Series (2016-2018)
- Yamaha SAT1800 242X E Series (2016-2018)
- Yamaha SH1800 190 FSH Sport (2016-2018)
- Yamaha SH1800 190 FSH Deluxe (2016-2018)
- Yamaha SH1800 190 FSH (2016-2018)
- Yamaha SAT1800 SX240 HO (2015-2018)
- Yamaha SAT1800 AR240 HO (2015-2018)
- Yamaha SAT1800 242 Limited S (2015-2018)
- Yamaha SAT1800 242 Limited (2015-2016)
- Yamaha FC1800A WaveRunner FX Cruiser SVHO (2014-2018)
- Yamaha FC1800 WaveRunner FX SVHO (2014-2018)
- Yamaha RX1800 SX190 (2012-2018)
- Yamaha RX1800 AR190 (2012-2018)
- Yamaha XAT1800 212X (2012-2016)
- Yamaha XAT1800 212SS (2012-2016)
- Yamaha SXT1800 SX240 HO (2010-2014)
- Yamaha SXT1800 AR240 HO (2010-2014)
- Yamaha SXT1800 242 Limited (2010-2014)
- Yamaha SXT1800 242 Limited S (2010-2014)
- Yamaha FB1800A WaveRunner FX Cruiser HO (2012-2018)
- Yamaha FB1800 WaveRunner FX HO (2012-2018)
- Yamaha FA1800A WaveRunner FX Cruiser SHO (2013-2014)
- Yamaha FA1800 WaveRunner FX SHO (2013-2014)
- Yamaha VX1800K WaveRunner VXS (2011-2016)
- Yamaha VX1800AK WaveRunner VXR (2011-2018)
- Yamaha FX1800 WaveRunner FX Cruiser SHO (2008-2012)
- Yamaha GX1800A WaveRunner FZS (2009-2016)
- Yamaha GX1800 WaveRunner FZR (2009-2016)
- Yamaha FY1800A WaveRunner FX Cruiser HO (2009-2011)
- Yamaha FY1800 WaveRunner FX HO (2009-2011)
- Yamaha FX1800 WaveRunner FX SHO (2008-2012)
- Suzuki Kizashi (2010-2016)
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ACDELCO 21 Manufacturer Information
A true OEM auto parts brand for GM and non-GM vehicles, ACDelco® offers a wide portfolio of parts designed to keep vehicles on the road longer. These parts work precisely and fit perfectly because they are designed, engineered, tested, and backed by General Motors. But ACDelco also carries aftermarket components that go through the same 18-step quality approval process as the OE parts. Whether customers choose OE or aftermarket, they’d get the same reliable performance, precise engineering, and superior reliability for years to come. ACDelco’s expansive product portfolio includes alternators, filters, batteries, brakes, belts and hoses, oil and fluids, and suspension parts. These products are made to meet GM and non-GM vehicles’ ever-evolving powertrain, collision, maintenance, and repair needs.
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