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Spark Plug

PART#: R42LTS
ACDelco
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Spark Plug
Spark Plug
Spark Plug
Spark Plug

$1.85

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In stock

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Interchanges
BrandPart #
Genuine GM Parts19354421
Genuine GM Parts19301658
Genuine GM Parts19157987
Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
2013FordTransit ConnectXLT2.0L4GASGap .051
2013FordTransit ConnectXLT Premium2.0L4GASGap .051
2013FordTransit ConnectXL2.0L4GASGap .051
2013FordE-150XL4.6V8FLEXGap .054
2013FordE-150Base4.6V8FLEXGap .054
2013FordE-150XLT4.6V8FLEXGap .054
2013FordE-250Base4.6V8FLEXGap .054
2012FordE-150XL4.6V8FLEXGap .054
2012FordE-150Base4.6V8FLEXGap .054
2012FordE-150XLT4.6V8FLEXGap .054
2012FordE-250Base4.6V8FLEXGap .054
2012FordTransit ConnectXLT Premium2.0L4GASGap .051
2012FordTransit ConnectXL2.0L4GASGap .051
2012FordTransit ConnectXLT2.0L4GASGap .051
2011FordRangerXL2.3L4GASGap .054
2011FordRangerXLT2.3L4GASGap .054
2011FordFocusSE2.0L4GASGap .051
2011FordFocusSEL2.0L4GASGap .051
2011FordFocusSES2.0L4GASGap .051
2011FordFocusS2.0L4GASGap .051
2011FordTransit ConnectXLT2.0L4GASGap .051
2011FordTransit ConnectXL2.0L4GASGap .051
2011FordTransit ConnectXLT Premium2.0L4GASGap .051
2011FordE-150XLT4.6V8FLEXGap .054
2011FordE-150Base4.6V8FLEXGap .054
2011FordE-150XL4.6V8FLEXGap .054
2011FordE-250Base4.6V8FLEXGap .054
2011LincolnTown CarSignature Limited4.6V8FLEXGap .054
2011LincolnTown CarSignature L4.6V8FLEXGap .054
2011LincolnTown CarSignature Limited4.6V8GASGap .054
2011LincolnTown CarExecutive L4.6V8FLEXGap .054
2011MazdaTributeS3.0V6FLEXGap .054
2010FordFocusS2.0L4GASGap .051
2010FordFocusSES2.0L4GASGap .051
2010FordFocusSE2.0L4GASGap .051
2010FordFocusSEL2.0L4GASGap .051
2010FordF-150XLT4.6V8GASGap .054 | Engine VIN: W;
2010FordF-150STX4.6V8GASGap .054 | Engine VIN: W;
2010FordF-150XL4.6V8GASGap .054 | Engine VIN: W;
2010FordF-150FX24.6V8GASGap .054 | Engine VIN: W;
2010FordE-150Base4.6V8FLEXGap .054
2010FordE-150XL4.6V8FLEXGap .054
2010FordE-150XLT4.6V8FLEXGap .054
2010FordRangerXL2.3L4GASGap .054
2010FordRangerXLT2.3L4GASGap .054
2010FordTransit ConnectXL2.0L4GASGap .051
2010FordTransit ConnectXLT2.0L4GASGap .051
2010LincolnTown CarExecutive L4.6V8FLEXGap .054
2010LincolnTown CarSignature L4.6V8FLEXGap .054
2010LincolnTown CarExecutive4.6V8FLEXGap .054
2010LincolnTown CarExecutive L4.6V8GASGap .054
2010LincolnTown CarSignature Limited4.6V8FLEXGap .054
2010MazdaTributeS3.0V6FLEXGap .054
2009FordFusionSEL3.0V6GASGap .054
2009FordFusionSE3.0V6GASGap .054
2009FordCrown VictoriaLX4.6V8GASGap .054
2009FordCrown VictoriaLX4.6V8FLEXGap .054
2009FordCrown VictoriaLWB4.6V8GASGap .054
2009FordCrown VictoriaLWB4.6V8FLEXGap .054
2009FordCrown VictoriaFleet4.6V8GASGap .054
2009FordCrown VictoriaFleet4.6V8FLEXGap .054
2009FordCrown VictoriaPolice Interceptor4.6V8FLEXGap .054
2009FordFocusSEL2.0L4GASGap .051
2009FordFocusSE2.0L4GASGap .051
2009FordFocusS2.0L4GASGap .051
2009FordFocusSES2.0L4GASGap .051
2009FordE-150Base4.6V8FLEXGap .054
2009FordE-150XL4.6V8FLEXGap .054
2009FordE-150XLT4.6V8FLEXGap .054
2009FordE-250Base4.6V8FLEXGap .054
2009FordRangerXL2.3L4GASGap .054
2009FordRangerSport2.3L4GASGap .054
2009FordRangerXLT2.3L4GASGap .054
2009FordF-150XL4.6V8GASGap .054 | Engine VIN: W;
2009FordF-150XLT4.6V8GASGap .054 | Engine VIN: W;
2009FordF-150STX4.6V8GASGap .054 | Engine VIN: W;
2009MercuryMilanBase3.0V6GASGap .054
2009MercuryMilanPremier3.0V6GASGap .054
2009MercuryGrand MarquisLS4.6V8GASGap .054
2009MercuryGrand MarquisLS4.6V8FLEXGap .054
2009MazdaB2300Base2.3L4GASGap .044
2008BuickLucerneSuper4.6V8GASGap .050
2008BuickLucerneCXL4.6V8GASGap .050
2008BuickLucerneCXS4.6V8GASGap .050
2008CadillacSRXBase4.6V8GASGap .050
2008CadillacSTSBase4.6V8GASGap .050
2008CadillacSTSPlatinum4.6V8GASGap .050
2008CadillacXLRPlatinum4.6V8GASGap .050
2008CadillacXLRBase4.6V8GASGap .050
2008CadillacDTSPlatinum4.6V8GASGap .050
2008CadillacDTSBase4.6V8GASGap .050
2008CadillacDTSLuxury4.6V8GASGap .050
2008FordEscapeLimited3.0V6GASGap .054
2008FordEscapeXLT2.3L4GASGap .051
2008FordEscapeHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .051
2008FordEscapeXLT3.0V6GASGap .054
2008FordEscapeXLS2.3L4GASGap .051
2008FordCrown VictoriaLWB4.6V8FLEXGap .054
2008FordCrown VictoriaPolice Interceptor4.6V8FLEXGap .054
2008FordCrown VictoriaBase4.6V8GASGap .054
2008FordCrown VictoriaBase4.6V8FLEXGap .054
2008FordCrown VictoriaLX4.6V8GASGap .054
2008FordCrown VictoriaPolice Interceptor4.6V8GASGap .054
2008FordCrown VictoriaFleet4.6V8FLEXGap .054
2008FordCrown VictoriaLX4.6V8FLEXGap .054
2008FordCrown VictoriaFleet4.6V8GASGap .054
2008FordCrown VictoriaLWB4.6V8GASGap .054
2008FordFocusS2.0L4GASGap .051
2008FordFocusSES2.0L4GASGap .051
2008FordFocusSE2.0L4GASGap .051
2008FordF-150STX4.6V8GASGap .054
2008FordF-150XL4.6V8GASGap .054
2008FordF-150XLT4.6V8GASGap .054
2008FordF-150FX24.6V8GASGap .054
2008FordF-150THE 60TH ANNIVERSARY EDITION4.6V8GASGap .054
2008FordFusionSE3.0V6GASGap .054
2008FordFusionSEL3.0V6GASGap .054
2008FordE-150XLT4.6V8GASGap .054
2008FordE-150Base4.6V8GASGap .054
2008FordE-150XL4.6V8GASGap .054
2008FordE-250Base4.6V8GASGap .054
2008FordRangerSport3.0V6GAS.052"/1.3mm
2008FordRangerXL2.3L4GASGap .044
2008FordRangerXL3.0V6GAS.052"/1.3mm
2008FordRangerXLT2.3L4GASGap .044
2008FordRangerXLT3.0V6GAS.052"/1.3mm
2008LincolnTown CarExecutive L4.6V8GASGap .054
2008LincolnTown CarExecutive L4.6V8FLEXGap .054
2008LincolnTown CarSignature L4.6V8FLEXGap .054
2008LincolnTown CarSignature L4.6V8GASGap .054
2008LincolnTown CarExecutive4.6V8GASGap .054
2008LincolnTown CarExecutive4.6V8FLEXGap .054
2008LincolnTown CarSignature Limited4.6V8FLEXGap .054
2008LincolnTown CarSignature Limited4.6V8GASGap .054
2008MercuryMarinerBase2.3L4GASGap .050
2008MercuryMarinerPremier3.0V6GASGap .054
2008MercuryMarinerBase3.0V6GASGap .054
2008MercuryMarinerHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .050
2008MercuryGrand MarquisLS4.6V8GASGap .054
2008MercuryGrand MarquisLS4.6V8FLEXGap .054
2008MercuryGrand MarquisGS4.6V8FLEXGap .054
2008MercuryMilanPremier3.0V6GASGap .054
2008MercuryMilanBase3.0V6GASGap .054
2008MazdaTributeS3.0V6GASGap .054
2008MazdaTributei2.3L4GASGap .054
2008MazdaTributeHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .054
2008MazdaB2300Base2.3L4GASGap .044
2007BuickLucerneCXL4.6V8GASGap .050
2007BuickLucerneCXS4.6V8GASGap .050
2007CadillacDTSLuxury4.6V8GASGap .050
2007CadillacDTSBase4.6V8GASGap .050
2007CadillacSRXBase4.6V8GASGap .050
2007CadillacSTSBase4.6V8GASGap .050
2007CadillacXLRBase4.6V8GASGap .050
2007FordTaurusSE3.0V6GASGap .044
2007FordTaurusSEL3.0V6GASGap .044
2007FordEscapeXLS2.3L4GASGap .051
2007FordEscapeHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .051
2007FordEscapeLimited3.0V6GASGap .054
2007FordEscapeXLT3.0V6GASGap .054
2007FordEscapeXLT2.3L4GASGap .051
2007FordFive HundredLimited3.0V6GASGap .054
2007FordFive HundredSEL3.0V6GASGap .054
2007FordFocusSES2.0L4GASGap .051
2007FordFocusST2.3L4GASGap .051
2007FordFocusS2.0L4GASGap .051
2007FordFocusSE2.0L4GASGap .051
2007FordCrown VictoriaBase4.6V8FLEXGap .054
2007FordCrown VictoriaLX4.6V8GASGap .054
2007FordCrown VictoriaPolice Interceptor4.6V8GASGap .054
2007FordCrown VictoriaFleet4.6V8GASGap .054
2007FordCrown VictoriaLWB4.6V8GASGap .054
2007FordCrown VictoriaFleet4.6V8FLEXGap .054
2007FordCrown VictoriaLX4.6V8FLEXGap .054
2007FordCrown VictoriaBase4.6V8GASGap .054
2007FordCrown VictoriaLWB4.6V8FLEXGap .054
2007FordFreestyleSEL3.0V6GASGap .054
2007FordFreestyleLimited3.0V6GASGap .054
2007FordF-150XLT4.6V8GASGap .054
2007FordF-150XL4.6V8GASGap .054
2007FordF-150STX4.6V8GASGap .054
2007FordFusionSEL3.0V6GASGap .054
2007FordFusionSE3.0V6GASGap .054
2007FordRangerXL3.0V6GAS.052"/1.3mm
2007FordRangerSTX2.3L4GASGap .044
2007FordRangerSport3.0V6GAS.052"/1.3mm
2007FordRangerXLT2.3L4GASGap .044
2007FordRangerSTX3.0V6GAS.052"/1.3mm
2007FordRangerXLT3.0V6GAS.052"/1.3mm
2007FordRangerXL2.3L4GASGap .044
2007FordE-150Base4.6V8GASGap .054
2007FordE-150Chateau4.6V8GASGap .054
2007FordE-150XL4.6V8GASGap .054
2007FordE-150XLT4.6V8GASGap .054
2007FordE-250Base4.6V8GASGap .054
2007LincolnTown CarSignature4.6V8FLEXGap .054
2007LincolnTown CarExecutive L4.6V8GASGap .054
2007LincolnTown CarDesigner Series4.6V8FLEXGap .054
2007LincolnTown CarDesigner Series4.6V8GASGap .054
2007LincolnTown CarSignature L4.6V8FLEXGap .054
2007LincolnTown CarSignature Limited4.6V8GASGap .054
2007LincolnTown CarExecutive4.6V8GASGap .054
2007LincolnTown CarSignature4.6V8GASGap .054
2007LincolnTown CarExecutive4.6V8FLEXGap .054
2007LincolnTown CarExecutive L4.6V8FLEXGap .054
2007LincolnTown CarSignature L4.6V8GASGap .054
2007LincolnTown CarSignature Limited4.6V8FLEXGap .054
2007MercuryGrand MarquisLS4.6V8GASGap .054
2007MercuryGrand MarquisLS4.6V8FLEXGap .054
2007MercuryGrand MarquisGS4.6V8FLEXGap .054
2007MercuryGrand MarquisGS4.6V8GASGap .054
2007MercuryMarinerConvenience2.3L4GASGap .050
2007MercuryMarinerLuxury3.0V6GASGap .054
2007MercuryMarinerPremier3.0V6GASGap .054
2007MercuryMarinerHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .050
2007MercuryMontegoPremier3.0V6GASGap .054
2007MercuryMontegoLuxury3.0V6GASGap .054
2007MercuryMilanPremier3.0V6GASGap .054
2007MercuryMilanBase3.0V6GASGap .054
2007Mazda5Grand Touring2.3L4GASGap .050
2007Mazda5Touring2.3L4GASGap .050
2007Mazda5Sport2.3L4GASGap .050
2007MazdaB2300Base2.3L4GASGap .044
2007MazdaB3000Base3.0V6GASGap .044
2007MazdaB3000DS3.0V6GASGap .044
2006BuickLucerneCXL4.6V8GASGap .050
2006BuickLucerneCXS4.6V8GASGap .050
2006CadillacDTSBase4.6V8GASGap .050
2006FordCrown VictoriaLX4.6V8GASGap .054
2006FordCrown VictoriaBase4.6V8FLEXGap .054
2006FordCrown VictoriaFleet4.6V8GASGap .054
2006FordCrown VictoriaBase4.6V8GASGap .054
2006FordCrown VictoriaLWB4.6V8GASGap .054
2006FordCrown VictoriaLX4.6V8FLEXGap .054
2006FordCrown VictoriaLWB4.6V8FLEXGap .054
2006FordCrown VictoriaFleet4.6V8FLEXGap .054
2006FordCrown VictoriaPolice Interceptor4.6V8GASGap .054
2006FordCrown VictoriaLX Sport4.6V8GASGap .054
2006FordEscapeXLT2.3L4GASGap .051
2006FordEscapeLimited3.0V6GASGap .054
2006FordEscapeXLT3.0V6GASGap .054
2006FordEscapeXLS2.3L4GASGap .051
2006FordEscapeHybrid2.3L4FULL HYBRID EV-GAS (FHEV)Gap .051
2006FordFive HundredSE3.0V6GASGap .054
2006FordFive HundredSEL3.0V6GASGap .054
2006FordFive HundredLimited3.0V6GASGap .054
2006FordFocusZX52.0L4GASGap .051
2006FordFocusZXW2.0L4GASGap .051
2006FordFocusZX4 ST2.3L4GASGap .051
2006FordFocusZX32.0L4GASGap .051
Product info

The ACDelco spark plug is designed to deliver reliable and consistent ignition that allows your engine to reach its peak performance in all conditions of use. With ACDelco, you’re getting improved spark plug lifespan, better combustion, optimized fuel economy, as well as fewer emissions.

The R42LTS spark plug is specifically built to meet the needs of Buick, Cadillac, Chevrolet, Ford, GMC, Isuzu, Laforza, Lincoln, Mazda, Mercedes-Benz, Mercury, Merkur, Oldsmobile, Panoz, Peugeot, Pontiac, Qvale, Shelby vehicles, ensuring optimal fit and performance characteristics that perfectly match your engine’s requirements.

Using quality replacement spark plugs is a good way to keep your engine running smoothly. ACDelco offers that, and much more! Over the years, they’ve become one of the leading authorities in the world of ignition systems with a strong track record of innovation. As a result, many carmakers from all around the world have chosen this brand as OEM for their engines. Give your car the ACDelco makeover it needs, and enjoy years of care-free driving!

About ACDelco

When it comes to top-notch auto parts, one brand that stands tall is ACDelco. Popular for its commitment to quality and innovation, ACDelco has been a trusted name in the automotive industry. At Newparts.com, we're proud to offer a wide selection of ACDelco auto parts, including ACDelco spark plugs, ACDelco alternators, and ACDelco air filters, and other ACDelco parts, all at discounted prices.

ACDelco spark plugs are engineered to deliver exceptional performance and reliability, ensuring optimal engine operation and fuel efficiency. Whether you're cruising down the highway or navigating city streets, you can trust ACDelco spark plugs to keep your engine firing on all cylinders.

When it comes to power generation, ACDelco alternators are second to none. Designed to withstand the challenges of daily driving, ACDelco alternators deliver consistent power output to keep your vehicle's electrical systems running smoothly. With ACDelco alternators from Newparts.com, you can count on reliable performance mile after mile.

In addition to spark plugs and alternators, we also offer a range of ACDelco air filters to help keep your engine breathing clean, fresh air. ACDelco air filters are designed to trap dirt, dust, and other contaminants, preventing them from entering your engine and causing damage. With a high-quality ACDelco air filter from Newparts.com, you can enjoy improved engine performance and extended engine life.

At Newparts.com, we understand that getting the right parts quickly is essential. That's why we offer fast shipping on all ACDelco auto parts, so you can get back on the road with confidence. Plus, with our discounted prices, you can save big on the parts you need to keep your vehicle running smoothly. In case you want to purchase parts by phone, feel free to call us at 855-505-2886 and our customer service team will help you out. 

Whether you're in need of spark plugs, alternators, air filters, or any other ACDelco auto parts, Newparts.com has you covered. Shop our selection today and experience the quality and reliability of ACDelco for yourself.

Specifications
2-12k ohms
Center Electrode Core MaterialCopper
Center Electrode Tip MaterialNickel
Ground ConfigurationSingle
Ground Electrode Core MaterialNickel Alloy
Ground Electrode Quantity1
Ground Electrode Tip DesignSingle Prong Electrode
Hex Size5/8in
Manufacturer Heat Range2
Pre-Gap Size0.039
Reach0.679
Resistance2-12K ohms
Resistor TypeYes
Seat TypeConical
Thread Diameter0.551
Warranty
We offer a 2-year warranty on all parts that we sell. If the part fails within 2 years of purchase, please contact us for instructions to replace it. The warranty does not cover normal wear and tear or improper installation. On many parts, we also offer Extend product protection, which is a way to add up to 3 additional years for 5 total years of worry free coverage. Select your preferred term length and you're covered!
Delivery & Returns

Delivery Info

Newparts.com is your go to store for all parts and accessories at the best price and delivered quickly. Every order we ship receives a tracking number so that you can watch it all the way until it reaches your door. We only ship using the major shipping carriers like FedEx, UPS and USPS to ensure quick and safe delivery of your new car parts order.

Returns Info

Newparts.com offers a thirty (30) day return for refund for all items purchased through Newparts.com. To qualify for return and refund, all items must be new and in their original manufacturers box. To initiate a return, please contact our customer service. This information is only a summary. Complete shipping and return policy information can be found in our web site policies.

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