{
    "lazyNodes": false,
    "abFitnotesFlag": false,
    "abCrawlReviews": false,
    "productOptionsCookie": false,
    "orderDelayFlag": false,
    "skipSessionCookie": false,
    "covidMessage": false,
    "fullTitleCookie": false,
    "nrLoggerCookie": false,
    "checkoutReviewCookie": false,
    "productOptionSeqCookie": false,
    "maintenanceFlag": false,
    "bufferETACookie": false,
    "multiShippingDiscountFlag": false,
    "newFitmentFlag": false,
    "surveyOptInFlag": false,
    "crossSellFlag": false,
    "skuMappingFlag": false,
    "paySplitCookie": false,
    "callDisableFlag": false,
    "zipPaymentFlag": "u",
    "hassleFreeReturn": false,
    "lifetimeReplacement": false,
    "cpn_off": false
}
2008 Cadillac STS
1
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
2008 Cadillac STS

2008 Cadillac STS Spark Plugs

Refine by:
See All

Shop Catalog

Showing 1 - 15 of 80 results
Display item:
15
30
45
Sort by:
Platinum Series Spark Plug, Sold individually
Bosch®
Platinum Series Spark Plug, Sold individually
Part Number: BS6747
Guaranteed to Fit
$10.99
Vehicle Fitment
  • 2008 Cadillac STS Base 8 Cyl 4.6L
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L
Product Details
Notes : (1) Ground Electrode; 16 mm Hex Size; 6000 Ohms Resistance; 4-Cycle Spark Plug Type; Nickel-Yttrium Ground Electrode Tip; Standard Ground Configuration; Standard Ground Electrode Tip; Non-Projected Ceramic Insulator; Tapered Seat Type; With ResistorSeries : Platinum SeriesElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Bosch limited warrantyPromotions : European Vehicle PartsElectrode Core Material : Nickel-Yttrium, Copper, and Platinum Electrode CoreReach : 17.5 mm ReachGap Size : 1.3 mmRecommended Use : OE ReplacementProduct Fit : Direct FitHeat Range : 7Thread Size : 14 mm
Platinum Series Spark Plug, Sold individually
Autolite®
Platinum Series Spark Plug, Sold individually
Part Number: ALTAP104
Guaranteed to Fit
$10.49
Vehicle Fitment
  • 2008 Cadillac STS Base 8 Cyl 4.6L
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L
Product Details
Notes : 5000 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 : 0.68 in. ReachGap Size : 0.05 in.Thread Size : 14 mm
Platinum Series Spark Plug, Sold individually
Autolite®
Platinum Series Spark Plug, Sold individually
Part Number: ALTAP5263
Guaranteed to Fit
$10.99
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L
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: ALTXP104
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 2008 Cadillac STS Base 8 Cyl 4.6L
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L
Product Details
Notes : 5000 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 : 0.68 in. ReachGap Size : 0.05 in.Thread Size : 14 mm
Iridium XP Series Spark Plug, Sold individually
Autolite®
Iridium XP Series Spark Plug, Sold individually
Part Number: ALTXP103
Guaranteed to Fit
$5.99
Vehicle Fitment
  • 2008 Cadillac STS V 8 Cyl 4.4L
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 : 0.68 in. ReachGap Size : 0.05 in.Thread Size : 14 mm
Professional Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-990
Guaranteed to Fit
$12.99
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L AWD
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L AWD
Product Details
Notes : Gap pre-set at factory, do not re-gapSeries : 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 : 0.043 in.
Iridium XP Series Spark Plug, Sold individually
Autolite®
Iridium XP Series Spark Plug, Sold individually
Part Number: ALTXP5263
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L
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
Professional Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-987
Guaranteed to Fit
$7.49
Vehicle Fitment
  • 2008 Cadillac STS Base 8 Cyl 4.6L AWD
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L AWD
Product Details
Notes : Gap pre-set at factory, do not re-gapSeries : 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 : 0.05 in.
Professional Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-988
Guaranteed to Fit
$14.49
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L Gap .044
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L Gap .044
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-AC41-988-6
Guaranteed to Fit
$55.99
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L Gap .044
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L Gap .044
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 Platinum Series Spark Plug, Sold individually
AC Delco®
Professional Platinum Series Spark Plug, Sold individually
Part Number: AC41-814
Guaranteed to Fit
$16.49
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L Gap .044
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L Gap .044
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
$46.49
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L Gap .044
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L Gap .044
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: ACR42LTS
Guaranteed to Fit
$10.49
Vehicle Fitment
  • 2008 Cadillac STS Base 8 Cyl 4.6L FI, DOHC, 32 Valve
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L FI, DOHC, 32 Valve
  • 2008 Cadillac STS V 8 Cyl 4.4L FI, Supercharged, DOHC, 32 Valve
Product Details
Notes : 5/8 in. hex size; Tapered seat styleSeries : Professional Conventional SeriesSpark Plug Code : R42LTSElectrode 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 : 0.032 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-ACR42LTS-8
Guaranteed to Fit
$28.99
Vehicle Fitment
  • 2008 Cadillac STS Platinum 8 Cyl 4.6L FI, DOHC, 32 Valve
  • 2008 Cadillac STS Base 8 Cyl 4.6L FI, DOHC, 32 Valve
  • 2008 Cadillac STS V 8 Cyl 4.4L FI, Supercharged, DOHC, 32 Valve
Product Details
Series : Professional Conventional SeriesSpark Plug Code : R42LTSElectrode 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 : 0.032 in.Thread 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
$12.49
Vehicle Fitment
  • 2008 Cadillac STS Base 6 Cyl 3.6L
  • 2008 Cadillac STS Platinum 6 Cyl 3.6L
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
Page 1 of 6 | Showing 1 - 15 of 80 results

Top Rated Products

AC Delco Professional Platinum Series Spark Plug, Set of 6
$55.99( Review)
No issues with the spark plugs
Michael M.
VERIFIED PURCHASER
Autolite Platinum Series Spark Plug, Sold individually
$10.99( Review)
Good plugs and fast shipping
Timothy M.
VERIFIED PURCHASER
AC Delco Professional Platinum Series Spark Plug, Sold individually
$14.49( Review)
I love them the order came fast
Tenika W.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

AC Delco Professional Conventional Series Spark Plug, Set of 8
$28.99
Q:Are these already gapped?
Shaladria P.
A:BEST ANSWERHi Shaladria, thank you for reaching out. Yes, they are. You can click the link below to order the set while stocks last. Have a good one! https://www.turnto.com/moderation/qall?siteId=1556&siteSel=1556&offset=0&max=40?can=cpab2020_csqa_20230711 Show less
Andrew B.
 
1 Question, 1 AnswerView all Q&As >
AC Delco RapidFire Performance Platinum Series Spark Plug, Sold individually
$12.49
Q:Are these pre gapped and if not then what should the gap be?
Joshua J.
A:BEST ANSWERHi Joshua, thank you for reaching out. Yes, they are. You can use this link to go back to the item page and continue ordering the part at 61% off the regular price today: https://www.carparts.com/spark-plug/ac-delco/ac17?can=CPAP3648_CSQA_20221017 I hope this helps. Happy shopping. Show less
Aldrin P.
 
4 Questions, 1 AnswerView all Q&As >

Helpful Automotive Resources

A Short Course on Ignition Systems
A Short Course on Ignition SystemsLet’s see how this is done. The role of spark plugs is integral in the operation of the ignition systems as they ignite the air/fuel mixture—at exactly the right instant.
Why Won’t My Car Start?
Why Won’t My Car Start?Automotive professionals break down no-start situations into two separate categories: crank-no-start and no-crank-no-start.
P0354 Code: Ignition Coil “D” Primary/Secondary Circuit
P0354 Code: Ignition Coil “D” Primary/Secondary CircuitIn an engine with a COP ignition system, each cylinder comes with its own ignition coil that sits on top of the spark plug. The computer monitors the circuit between it and every ignition coil for faults. It will file a trouble code depending on the cylinder that experienced a
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)
P0316 Code: Engine Misfire Detected on Startup (First 1000 Revolutions)The PCM may disable the misfiring cylinder or cylinders in order to prevent further damage to the engine. Code P0316 is often listed in addition to one or more of the P0300 series codes that are associated with the misfiring cylinder/s.