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2003 Chevrolet Trailblazer EXT
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2003 Chevrolet Trailblazer EXT

2003 Chevrolet Trailblazer EXT Spark Plugs

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12-Piece Kit Ignition Coil, 6 Cylinder, 4.2 Liter Engine, includes Spark Plugs
DriveWire
12-Piece Kit Ignition Coil, 6 Cylinder, 4.2 Liter Engine, includes Spark Plugs
Part Number: KIT-052523-27
Guaranteed to Fit
$159.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
Product Details
Components : (6) Ignition Coil and (6) Spark PlugRecommended Use : OE ReplacementProduct Fit : Direct FitInterchange Part Number : UF303Warranty : 1-year DriveWire unlimited-mileage warrantyReturns Policy : 30-Day Return PolicyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemicals including Lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Quantity Sold : Kit
Platinum Series Spark Plug, Sold individually
Autolite®
Platinum Series Spark Plug, Sold individually
Part Number: ALTAP5245
Guaranteed to Fit
$2.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L
Product Details
Notes : 4000 82 Resistance; 5/8 in. Hex Size; (1) Ground Electrode Quantity; Standard Center Electrode Design; Long Projection Tip Configuration; Stud Electrical Terminal Type; Nickel Ground Electrode Core Material; Tapered Ground Electrode Tip Design; Nickel Ground Electrode Tip Material; Ceramic Insulator Material; Tapered Seat TypeSeries : Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 4-year Autolite limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.68 in. ReachGap Size : 0.04 in.Thread Size : 14 mm
Platinum Series Spark Plug, Sold individually
Autolite®
Platinum Series Spark Plug, Sold individually
Part Number: ALTAP5263
Guaranteed to Fit
$4.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
Product Details
Notes : 4000 82 Resistance; 5/8 in. Hex Size; (1) Ground Electrode Quantity; Standard Center Electrode Design; Mid Projection Tip Configuration; Stud Electrical Terminal Type; Nickel Ground Electrode Core Material; Tapered Ground Electrode Tip Design; Nickel Ground Electrode Tip Material; Ceramic Insulator Material; Tapered Seat TypeSeries : Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 4-year Autolite limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.98 in. ReachGap Size : 0.04 in.Thread Size : 14 mm
Iridium XP Series Spark Plug, Sold individually
Autolite®
Iridium XP Series Spark Plug, Sold individually
Part Number: ALTXP5263
Guaranteed to Fit
$5.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
Product Details
Notes : 4000 82 Resistance; 5/8 in. Hex Size; (1) Ground Electrode Quantity; Fine Wire Center Electrode Design; Mid Projection Tip Configuration; Stud Electrical Terminal Type; Nickel Ground Electrode Core Material; Tapered Ground Electrode Tip Design; Platinum Ground Electrode Tip Material; Ceramic Insulator Material; Tapered Seat TypeSeries : Iridium XP SeriesElectrode Tip Material : Iridium Electrode TipQuantity Sold : Sold individuallyWarranty : Lifetime Autolite limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.98 in. ReachGap Size : 0.04 in.Thread Size : 14 mm
Iridium XP Series Spark Plug, Sold individually
Autolite®
Iridium XP Series Spark Plug, Sold individually
Part Number: ALTXP5245
Guaranteed to Fit
$6.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L
Product Details
Notes : 4000 82 Resistance; 5/8 in. Hex Size; (1) Ground Electrode Quantity; Fine Wire Center Electrode Design; Long Projection Tip Configuration; Stud Electrical Terminal Type; Nickel Ground Electrode Core Material; Tapered Ground Electrode Tip Design; Platinum Ground Electrode Tip Material; Ceramic Insulator Material; Tapered Seat TypeSeries : Iridium XP SeriesElectrode Tip Material : Iridium Electrode TipQuantity Sold : Sold individuallyWarranty : Lifetime Autolite limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 0.68 in. ReachGap Size : 0.04 in.Thread Size : 14 mm
Professional Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-814
Guaranteed to Fit
$15.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Gap .042
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Gap .042
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Gap .042
Product Details
Series : Professional Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 7-year or unlimited mile AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreGap Size : OE Replacement
Professional Platinum Series Spark Plug, Set of 6
AC Delco®
Professional Platinum Series Spark Plug, Set of 6
Part Number: SET-AC41-814-6
Guaranteed to Fit
$49.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L Gap .042
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L Gap .042
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L Gap .042
Product Details
Series : Professional Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 6Warranty : 7-year or unlimited mile AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreGap Size : OE Replacement
Professional Conventional Series Spark Plug, Sold individually
AC Delco®
Professional Conventional Series Spark Plug, Sold individually
Part Number: ACR44LTSM
Guaranteed to Fit
$2.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L FI
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L FI
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L FI
Product Details
Notes : 5/8 in. hex size; Tapered seat styleSeries : Professional Conventional SeriesSpark Plug Code : R44LTSMElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 17.55 mm ReachGap Size : 0.06 in.Thread Size : 14 mm thread size
Professional Conventional Series Spark Plug, Set of 8
AC Delco®
Professional Conventional Series Spark Plug, Set of 8
Part Number: SET-ACR44LTSM-8
Guaranteed to Fit
$26.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L FI
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L FI
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L FI
Product Details
Series : Professional Conventional SeriesSpark Plug Code : R44LTSMElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Set of 8Warranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 17.55 mm ReachGap Size : 0.06 in.Thread Size : 14 mm thread size
Professional Conventional Series Spark Plug, Sold individually
AC Delco®
Professional Conventional Series Spark Plug, Sold individually
Part Number: ACMR43LTS
Guaranteed to Fit
$2.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L
Product Details
Notes : 0.67 in. Thread Reach; 16 mm Hex Size; 2500-12000 Ohms Resistance; (1) Ground Electrode; Nickel Ground Electrode Tip; Tapered Seat TypeSeries : Professional Conventional SeriesSpark Plug Code : MR43LTSElectrode Tip Material : Nickel alloy Electrode TipReplaces OE Number : 5614210, 19355201Quantity Sold : Sold individuallyWarranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 18 mm ReachGap Size : 1.14 mmInterchange Part Number : 5614210, 19355201Heat Range : 3Thread Size : 14 mm thread size
Professional Conventional Series Spark Plug, Set of 8
AC Delco®
Professional Conventional Series Spark Plug, Set of 8
Part Number: SET-ACMR43LTS-8
Guaranteed to Fit
$26.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L
Product Details
Series : Professional Conventional SeriesSpark Plug Code : MR43LTSElectrode Tip Material : Nickel alloy Electrode TipReplaces OE Number : 5614210, 19355201Quantity Sold : Set of 8Warranty : 24-months or unlimited mile AC Delco limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 18 mm ReachGap Size : 1.14 mmInterchange Part Number : 5614210, 19355201Heat Range : 3Thread Size : 14 mm thread size
RapidFire Performance Platinum Series Spark Plug, Sold individually
AC Delco®
RapidFire Performance Platinum Series Spark Plug, Sold individually
Part Number: AC17
Guaranteed to Fit
$12.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
Product Details
Notes : Single platinum electrode configurationSeries : RapidFire Performance Platinum SeriesSpark Plug Code : 17Electrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 3 year, unlimited-mileage AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreGap Size : OE Replacement
RapidFire Performance Platinum Series Spark Plug, Set of 6
AC Delco®
RapidFire Performance Platinum Series Spark Plug, Set of 6
Part Number: SET-AC17-6
Guaranteed to Fit
$36.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT North Face 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LS 6 Cyl 4.2L
  • 2003 Chevrolet Trailblazer EXT LT 6 Cyl 4.2L
Product Details
Series : RapidFire Performance Platinum SeriesSpark Plug Code : 17Electrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 6Warranty : 3 year, unlimited-mileage AC Delco warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreGap Size : OE Replacement
OE Fine Wire Iridium Spark Plug Series Spark Plug, Sold individually
Bosch®
OE Fine Wire Iridium Spark Plug Series Spark Plug, Sold individually
Part Number: BS9602
Guaranteed to Fit
$7.49
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L Original Equipment Is Iridium
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L Original Equipment Is Iridium
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L Original Equipment Is Iridium
Product Details
Notes : Iridium Long LifeSeries : OE Fine Wire Iridium Spark Plug SeriesSpark Plug Code : HR8LII33UElectrode Tip Material : Iridium Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Bosch limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Promotions : European Vehicle PartsElectrode Core Material : Copper Electrode CoreReach : 19 mm ReachHeat Range : 8Thread Size : 14 mm thread size
Ruthenium HX Series Spark Plug, Sold individually
NGK®
Ruthenium HX Series Spark Plug, Sold individually
Part Number: NG94567
Guaranteed to Fit
$14.99
Vehicle Fitment
  • 2003 Chevrolet Trailblazer EXT LS 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT North Face 8 Cyl 5.3L
  • 2003 Chevrolet Trailblazer EXT LT 8 Cyl 5.3L
Product Details
Notes : 1.25 mm Thread Pitch; 16 mm Hex Size; 0.6 mm Projected Fine Wire Ruthenium Center Electrode; 5000 Ohms Resistance; (1) Fine Wire Platinum Ground Electrode; Tapered Seat Type; Solid Terminal TypeSeries : Ruthenium HX SeriesElectrode Tip Material : Ruthenium Electrode TipReplaces OE Number : SP511, 94567, 41910, 12679799, AGSF22F1, AJ0318110Quantity Sold : Sold individuallyWarranty : 60-day NGK limited warrantyProp 65 Warning :

Warning SymbolWARNING: This product can expose you to chemical which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Electrode Core Material : Copper Electrode CoreReach : 18 mm ReachGap Size : 0.04 in.Interchange Part Number : SP511, 94567, 41910, 12679799, AGSF22F1, AJ0318110Heat Range : 5Thread Size : 14 mm thread size
Page 1 of 4 | Showing 1 - 15 of 53 results

Top Rated Products

Autolite Platinum Series Spark Plug, Sold individually
$4.49( Review)
Good plugs and fast shipping
Timothy M.
VERIFIED PURCHASER
AC Delco Professional Conventional Series Spark Plug, Sold individually
$2.99( Review)
Amazing Product 🤙
Siaosi S.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

NGK Ruthenium HX Series Spark Plug, Sold individually
$14.99
Q:Would this plug work in my 2011 z71 chevy.    or should i go with the NGK IZTR5B11 ? Show Less
David G.
A:BEST ANSWERHi David, I'm glad to help you out. Yes, it would. And I highly recommend this Ruthenium HX Series since they are capable of providing up to twice the service life of the Laser Iridium and 4-times of service life of the standard nickel electrode spark plugs. I hope this helps, and if you're interested in this NGK spark plug, you can click on the link below for direct ordering to take advantage of our ongoing sale. Happy shopping. https://www.carparts.com/spark-plug/ngk/ng94567?can=CPAE1047 Show less
Arnel E.
 
1 Question, 1 AnswerView all Q&As >
Bosch OE Fine Wire Iridium Spark Plug Series Spark Plug, Sold individually
$7.49
Q:Can I use this spark plug with ac delco spark wire?
Art S.
A:BEST ANSWERHi Art, I'm pleased to assist you. Yes, you definitely can! You can use the link below to directly place your order. Take advantage of our low price and limited stocks. I hope this helps, and enjoy shopping! https://www.carparts.com/spark-plug/bosch/bs9602?can=CPGG4850_CSQA_20231122 Show less
Grace G.
 
1 Question, 1 AnswerView all Q&As >
AC Delco RapidFire Performance Platinum Series Spark Plug, Set of 6
$36.49
Q:Are these already pregapped for 2012 acadia? I saw one answer said yes and another said no Show Less
Rickey H.
A:BEST ANSWERHi Rickey, I am pleased to assist you. Yes, these are already pre-gapped at the .043 setting as indicated in the "Fitment Information" for the 2012 GMC Acadia 6 Cyl 3.6L. If this is the setting specified for your vehicle, you can use the link below to order while the part is in stock. Your order will come with a 30-day post-purchase price match guarantee. I hope this helps and enjoy shopping! https://www.carparts.com/spark-plug/ac-delco/set-ac17-6?can=CPGG4850_CSQA_20241031 Show less
Grace G.
 
5 Questions, 1 AnswerView all Q&As >

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Why Won’t My Car Start?
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P0354 Code: Ignition Coil “D” Primary/Secondary Circuit
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P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
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