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Spark Plug

PART#: R45TSX
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 Parts19300873
Fitments
YearMakeModelSubmodelEngineFuel TypePositionNote
1993ChevroletLLVBase2.5L4GASGap .060
1992BuickCenturyCustom2.5L4GASGap .060
1992BuickCenturyLimited2.5L4GASGap .060
1992BuickCenturySpecial2.5L4GASGap .060
1992ChevroletLLVBase2.5L4GASGap .060
1992OldsmobileCutlass CieraBase2.5L4GASGap .060
1992OldsmobileCutlass CruiserS2.5L4GASGap .060
1991BuickCenturySpecial2.5L4GASGap .060
1991BuickCenturyCustom2.5L4GASGap .060
1991BuickCenturyLimited2.5L4GASGap .060
1991BuickSkylarkCustom2.5L4GASGap .060
1991BuickSkylarkLuxury Edition2.5L4GASGap .060
1991BuickSkylarkBase2.5L4GASGap .060
1991BuickSkylarkGran Sport2.5L4GASGap .060
1991ChevroletLLVBase2.5L4GASGap .060
1991OldsmobileCutlass CalaisBase2.5L4GASGap .060
1991OldsmobileCutlass CalaisGT2.5L4GASGap .060
1991OldsmobileCutlass CalaisS2.5L4GASGap .060
1991OldsmobileCutlass CieraS2.5L4GASGap .060
1991OldsmobileCutlass CieraBase2.5L4GASGap .060
1991OldsmobileCutlass CruiserS2.5L4GASGap .060
1991Pontiac6000LE2.5L4GASGap .060
1991PontiacGrand AmValue Leader2.5L4GASGap .060
1991PontiacGrand AmLE2.5L4GASGap .060
1990BuickCenturyLimited2.5L4GASGap .060
1990BuickCenturyCustom2.5L4GASGap .060
1990BuickSkylarkLuxury Edition2.5L4GASGap .060
1990BuickSkylarkCustom2.5L4GASGap .060
1990BuickSkylarkBase2.5L4GASGap .060
1990BuickSkylarkGran Sport2.5L4GASGap .060
1990ChevroletLLVBase2.5L4GASGap .060
1990OldsmobileCutlass CalaisBase2.5L4GASGap .060
1990OldsmobileCutlass CalaisS2.5L4GASGap .060
1990OldsmobileCutlass CalaisGT2.5L4GASGap .060
1990OldsmobileCutlass CieraSL2.5L4GASGap .060
1990OldsmobileCutlass CieraS2.5L4GASGap .060
1990OldsmobileCutlass CieraBase2.5L4GASGap .060
1990OldsmobileCutlass CruiserBase2.5L4GASGap .060
1990Pontiac6000LE2.5L4GASGap .060
1990PontiacGrand AmLE2.5L4GASGap .060
1989BuickCenturyEstate Wagon2.5L4GASGap .060
1989BuickCenturyLimited2.5L4GASGap .060
1989BuickCenturyCustom2.5L4GASGap .060
1989BuickSkylarkCustom2.5L4GASGap .060
1989BuickSkylarkLimited2.5L4GASGap .060
1989ChevroletCelebrityEurosport2.5L4GASGap .060
1989ChevroletCelebrityBase2.5L4GASGap .060
1989ChevroletCelebrityCL2.5L4GASGap .060
1989ChevroletLLVBase2.5L4GASGap .060
1989OldsmobileCutlass CalaisS2.5L4GASGap .060
1989OldsmobileCutlass CalaisGT2.5L4GASGap .060
1989OldsmobileCutlass CalaisBase2.5L4GASGap .060
1989OldsmobileCutlass CalaisSL2.5L4GASGap .060
1989OldsmobileCutlass CieraSL2.5L4GASGap .060
1989OldsmobileCutlass CieraBase2.5L4GASGap .060
1989OldsmobileCutlass CruiserBase2.5L4GASGap .060
1989OldsmobileCutlass CruiserSL2.5L4GASGap .060
1989Pontiac6000Base2.5L4GASGap .060
1989Pontiac6000LE2.5L4GASGap .060
1989PontiacGrand AmLE2.5L4GASGap .060
1988BuickCenturyCustom2.5L4GASGap .060
1988BuickCenturyEstate Wagon2.5L4GASGap .060
1988BuickCenturyLimited2.5L4GASGap .060
1988BuickSkylarkLimited2.5L4GASGap .060
1988BuickSkylarkCustom2.5L4GASGap .060
1988ChevroletCelebrityBase2.5L4GASGap .060
1988ChevroletCelebrityEurosport2.5L4GASGap .060
1988ChevroletLLVBase2.5L4GASGap .060
1988OldsmobileCutlass CalaisGT2.5L4GASGap .060
1988OldsmobileCutlass CalaisBase2.5L4GASGap .060
1988OldsmobileCutlass CalaisSL2.5L4GASGap .060
1988OldsmobileCutlass CieraLS2.5L4GASGap .060
1988OldsmobileCutlass CieraSL2.5L4GASGap .060
1988OldsmobileCutlass CieraS2.5L4GASGap .060
1988OldsmobileCutlass CieraBrougham2.5L4GASGap .060
1988OldsmobileCutlass CieraBase2.5L4GASGap .060
1988OldsmobileCutlass CruiserSL2.5L4GASGap .060
1988OldsmobileCutlass CruiserBrougham LS2.5L4GASGap .060
1988OldsmobileCutlass CruiserLS2.5L4GASGap .060
1988Pontiac6000Base2.5L4GASGap .060
1988Pontiac6000LE2.5L4GASGap .060
1988PontiacFieroSport2.5L4GASGap .060
1988PontiacFieroValue Leader2.5L4GASGap .060
1988PontiacGrand AmLE2.5L4GASGap .060
1988PontiacGrand AmBase2.5L4GASGap .060
1987BuickCenturyEstate Wagon2.5L4GASGap .060
1987BuickCenturyLimited2.5L4GASGap .060
1987BuickCenturyCustom2.5L4GASGap .060
1987BuickRegalLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987BuickRegalBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987BuickRegalGrand National3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987BuickRegalGNX3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987BuickSkylarkLimited2.5L4GASGap .060
1987BuickSkylarkCustom2.5L4GASGap .060
1987BuickSomersetCustom2.5L4GASGap .060
1987BuickSomersetLimited2.5L4GASGap .060
1987ChevroletCelebrityEurosport2.5L4GASGap .060
1987ChevroletCelebrityEstate2.5L4GASGap .060
1987ChevroletCelebrityBase2.5L4GASGap .060
1987ChevroletLLVBase2.5L4GASGap .060
1987OldsmobileCalaisSupreme2.5L4GASGap .060
1987OldsmobileCalaisGT2.5L4GASGap .060
1987OldsmobileCalaisBase2.5L4GASGap .060
1987OldsmobileCutlass SalonBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987OldsmobileCutlass CieraLS2.5L4GASGap .060
1987OldsmobileCutlass CieraGT2.5L4GASGap .060
1987OldsmobileCutlass CieraS2.5L4GASGap .060
1987OldsmobileCutlass CieraSL2.5L4GASGap .060
1987OldsmobileCutlass CieraBrougham2.5L4GASGap .060
1987OldsmobileCutlass CruiserBrougham2.5L4GASGap .060
1987OldsmobileCutlass CruiserLS2.5L4GASGap .060
1987OldsmobileCutlass SupremeBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987OldsmobileCutlass Supreme4423.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987OldsmobileCutlass SupremeBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987Pontiac6000Base2.5L4GASGap .060
1987Pontiac6000LE2.5L4GASGap .060
1987PontiacFieroSE2.5L4GASGap .060
1987PontiacFieroValue Leader2.5L4GASGap .060
1987PontiacFieroSport2.5L4GASGap .060
1987PontiacGrand AmSE2.5L4GASGap .060
1987PontiacGrand AmLE2.5L4GASGap .060
1987PontiacGrand AmBase2.5L4GASGap .060
1987PontiacGrand PrixBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987PontiacGrand PrixBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1987PontiacGrand PrixLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986BuickCenturyLimited2.5L4GASGap .060
1986BuickCenturyEstate Wagon2.5L4GASGap .060
1986BuickCenturyCustom2.5L4GASGap .060
1986BuickRegalBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986BuickRegalT-Type3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986BuickRegalGrand National3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986BuickRegalLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986BuickSkylarkLimited2.5L4GASGap .060
1986BuickSkylarkCustom2.5L4GASGap .060
1986BuickSomersetT-Type2.5L4GASGap .060
1986BuickSomersetLimited2.5L4GASGap .060
1986BuickSomersetCustom2.5L4GASGap .060
1986ChevroletCamaroSport2.5L4GASGap .060
1986ChevroletCelebrityEstate2.5L4GASGap .060
1986ChevroletCelebrityEurosport2.5L4GASGap .060
1986ChevroletCelebrityBase2.5L4GASGap .060
1986OldsmobileCalaisBase2.5L4GASGap .060
1986OldsmobileCalaisES2.5L4GASGap .060
1986OldsmobileCalaisGT2.5L4GASGap .060
1986OldsmobileCalaisSupreme2.5L4GASGap .060
1986OldsmobileCutlass SalonBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986OldsmobileCutlass CieraLS2.5L4GASGap .060
1986OldsmobileCutlass CieraGT2.5L4GASGap .060
1986OldsmobileCutlass CieraHoliday2.5L4GASGap .060
1986OldsmobileCutlass CieraES2.5L4GASGap .060
1986OldsmobileCutlass CieraS2.5L4GASGap .060
1986OldsmobileCutlass CieraSL2.5L4GASGap .060
1986OldsmobileCutlass CieraBrougham2.5L4GASGap .060
1986OldsmobileCutlass SupremeBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986OldsmobileCutlass SupremeBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986Pontiac6000Base2.5L4GASGap .060
1986Pontiac6000LE2.5L4GASGap .060
1986PontiacBonnevilleLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986PontiacBonnevilleBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986PontiacBonnevilleBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986PontiacFieroSE2.5L4GASGap .060
1986PontiacFieroValue Leader2.5L4GASGap .060
1986PontiacFieroSport2.5L4GASGap .060
1986PontiacFirebirdBase2.5L4GASGap .060
1986PontiacGrand AmBase2.5L4GASGap .060
1986PontiacGrand AmLE2.5L4GASGap .060
1986PontiacGrand PrixLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986PontiacGrand PrixBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1986PontiacGrand PrixBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickLeSabreLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickLeSabreCustom3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickLeSabreCollector's Edition3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickRegalGrand National3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickRegalLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickRegalBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickRegalT-Type3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985BuickSkylarkLimited2.5L4GASGap .060
1985BuickSkylarkCustom2.5L4GASGap .060
1985BuickSomerset RegalLimited2.5L4GASGap .060
1985BuickSomerset RegalBase2.5L4GASGap .060
1985ChevroletCamaroSport2.5L4GASGap .060
1985ChevroletCelebrityClassic2.5L4GASGap .060
1985ChevroletCelebrityEstate2.5L4GASGap .060
1985ChevroletCelebrityEurosport2.5L4GASGap .060
1985ChevroletCelebrityBase2.5L4GASGap .060
1985OldsmobileCalais5002.5L4GASGap .060
1985OldsmobileCalaisBase2.5L4GASGap .060
1985OldsmobileCalaisSupreme2.5L4GASGap .060
1985OldsmobileCutlass SalonBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985OldsmobileCutlass SupremeBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985OldsmobileCutlass SupremeBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985OldsmobileCutlass SupremeLS3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985OldsmobileDelta 88Royale Brougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985OldsmobileDelta 88Royale3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985Pontiac6000Base2.5L4GASGap .060
1985Pontiac6000LE2.5L4GASGap .060
1985PontiacBonnevilleBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985PontiacBonnevilleBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985PontiacBonnevilleLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985PontiacFieroSport2.5L4GASGap .060
1985PontiacFieroBase2.5L4GASGap .060
1985PontiacFieroSE2.5L4GASGap .060
1985PontiacFirebirdBase2.5L4GASGap .060
1985PontiacGrand AmLE2.5L4GASGap .060
1985PontiacGrand AmBase2.5L4GASGap .060
1985PontiacGrand PrixLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985PontiacGrand PrixBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1985PontiacGrand PrixBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickElectraLimited4.1V6GASGap .060
1984BuickElectraPark Avenue4.1V6GASGap .060
1984BuickLeSabreLimited4.1V6GASGap .060
1984BuickLeSabreCustom3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickLeSabreLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickLeSabreCustom4.1V6GASGap .060
1984BuickRegalLimited3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickRegalGrand National3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickRegalT-Type3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickRegalBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984BuickRegalBase4.1V6GASGap .060
1984BuickRegalLimited4.1V6GASGap .060
1984BuickRivieraBase4.1V6GASGAP .060; Original Equipment | Engine VIN: 4;
1984BuickRivieraLuxury4.1V6GASGAP .060; Original Equipment | Engine VIN: 4;
1984BuickSkylarkLimited2.5L4GASGap .060
1984BuickSkylarkCustom2.5L4GASGap .060
1984ChevroletCamaroSport2.5L4GASGap .060
1984ChevroletCapriceClassic3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984ChevroletCelebrityBase2.5L4GASGap .060
1984ChevroletCelebrityEurosport2.5L4GASGap .060
1984ChevroletCitation IIX-112.5L4GASGap .060
1984ChevroletCitation IIBase2.5L4GASGap .060
1984ChevroletEl CaminoBase3.8V6GASGap .060
1984ChevroletEl CaminoSS3.8V6GASGap .060
1984ChevroletEl CaminoConquista3.8V6GASGap .060
1984ChevroletImpalaBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984ChevroletMonte CarloBase3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984GMCCaballeroAmarillo3.8V6GASGap .060
1984GMCCaballeroBase3.8V6GASGap .060
1984GMCCaballeroDiablo3.8V6GASGap .060
1984OldsmobileCutlass CalaisBase3.8V6GASGap .060
1984OldsmobileCutlass SupremeBrougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984OldsmobileDelta 88Royale Brougham3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984OldsmobileDelta 88Royale Brougham LS3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984OldsmobileDelta 88Royale3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
1984OldsmobileOmegaBrougham2.5L4GASGap .060
1984OldsmobileOmegaBase2.5L4GASGap .060
1984OldsmobileOmegaES2.5L4GASGap .060
1984OldsmobileToronadoBrougham4.1V6GASGap .060
1984Pontiac6000LE2.5L4GASGap .060
1984Pontiac6000Base2.5L4GASGap .060
1984PontiacBonnevilleLE3.8V6GASGAP .060; Original Equipment | Engine VIN: A; Engine Code: LD5;
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 R45TSX spark plug is specifically built to meet the needs of Buick, Cadillac, Chevrolet, Ford, GMC, Jeep, Lincoln, Mercury, Oldsmobile, Pontiac 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
Insulator Height2.468
Manufacturer Heat Range5
Pre-Gap Size0.054
Reach0.433
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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