{
    "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
}
0
0
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Price Match Guarantee
60-Day Returns
Lifetime Replacement
Select your vehicle

Mercury Marquis Spark Plugs

Refine by:
See All

Shop Catalog

Showing 1 - 15 of 117 results
Display item:
15
30
45
Sort by:
6747 Platinum Series Spark Plug, Sold individually
Bosch®
6747 Platinum Series Spark Plug, Sold individually
Part Number: BS6747
Vehicle Info Required to Guarantee Fit
$4.99
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
7971 OE/Specialty Spark Plug Series Spark Plug, Sold individually
Bosch®
7971 OE/Specialty Spark Plug Series Spark Plug, Sold individually
Part Number: BS7971
Vehicle Info Required to Guarantee Fit
$2.49
Product Details
Notes : 5/8 in. hex size; Projected tip; Removable nut terminal type; Tapered seat styleSeries : OE/Specialty Spark Plug SeriesSpark Plug Code : HR8DCX+Electrode Tip Material : Nickel-yttrium 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 : 17.55 mm ReachGap Size : 1.1 mmHeat Range : 8Thread Size : 14 mm thread size
AP104 Platinum Series Spark Plug, Sold individually
Autolite®
AP104 Platinum Series Spark Plug, Sold individually
Part Number: ALTAP104
Vehicle Info Required to Guarantee Fit
$6.99
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
XP104 Iridium XP Series Spark Plug, Sold individually
Autolite®
XP104 Iridium XP Series Spark Plug, Sold individually
Part Number: ALTXP104
Vehicle Info Required to Guarantee Fit
$12.49
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
4509 Platinum TT Series Spark Plug, Sold individually
Denso®
4509 Platinum TT Series Spark Plug, Sold individually
Part Number: NP4509
Vehicle Info Required to Guarantee Fit
$10.49
Product Details
Notes : 5/8 in. hex size; Solid terminal type; Gasket seat style; Twin tip design; Titanium enhanced ground electrode; Machine rolled threadsSeries : Platinum TT SeriesSpark Plug Code : PTF16TTElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Denso 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 : 11.6 mm ReachGap Size : 1 mmHeat Range : 16Thread Size : 14 mm thread size
R42LTS Professional Conventional Series Spark Plug, Sold individually
AC Delco®
R42LTS Professional Conventional Series Spark Plug, Sold individually
Part Number: ACR42LTS
Vehicle Info Required to Guarantee Fit
$2.99
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
SET-ACR42LTS-4 Professional Conventional Series Spark Plug, Set of 4
AC Delco®
SET-ACR42LTS-4 Professional Conventional Series Spark Plug, Set of 4
Part Number: SET-ACR42LTS-4
Vehicle Info Required to Guarantee Fit
$18.99
Product Details
Series : Professional Conventional SeriesSpark Plug Code : R42LTSElectrode Tip Material : Nickel alloy Electrode TipQuantity Sold : Set of 4Warranty : 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
CR43TS Professional Conventional Series Spark Plug, Sold individually
AC Delco®
CR43TS Professional Conventional Series Spark Plug, Sold individually
Part Number: ACCR43TS
Vehicle Info Required to Guarantee Fit
$2.99
Product Details
Notes : 5/8 in. hex size; Tapered seat styleSeries : Professional Conventional SeriesSpark Plug Code : CR43TSElectrode 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 : 11.2 mm ReachGap Size : 0.035 in.Thread Size : 14 mm thread size
SET-ACCR43TS-8 Professional Conventional Series Spark Plug, Set of 8
AC Delco®
SET-ACCR43TS-8 Professional Conventional Series Spark Plug, Set of 8
Part Number: SET-ACCR43TS-8
Vehicle Info Required to Guarantee Fit
$26.49
Product Details
Series : Professional Conventional SeriesSpark Plug Code : CR43TSElectrode 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 : 11.2 mm ReachGap Size : 0.035 in.Thread Size : 14 mm thread size
MR43LTS Professional Conventional Series Spark Plug, Sold individually
AC Delco®
MR43LTS Professional Conventional Series Spark Plug, Sold individually
Part Number: ACMR43LTS
Vehicle Info Required to Guarantee Fit
$2.99
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
SET-ACMR43LTS-4 Professional Conventional Series Spark Plug, Set of 4
AC Delco®
SET-ACMR43LTS-4 Professional Conventional Series Spark Plug, Set of 4
Part Number: SET-ACMR43LTS-4
Vehicle Info Required to Guarantee Fit
$18.99
Product Details
Series : Professional Conventional SeriesSpark Plug Code : MR43LTSElectrode Tip Material : Nickel alloy Electrode TipReplaces OE Number : 5614210, 19355201Quantity Sold : Set of 4Warranty : 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
4511 Platinum TT Series Spark Plug, Sold individually
Denso®
4511 Platinum TT Series Spark Plug, Sold individually
Part Number: NP4511
Vehicle Info Required to Guarantee Fit
$12.49
Product Details
Notes : 5/8 in. hex size; Solid terminal type; Tapered seat style; Twin tip design; Titanium enhanced ground electrode; Machine rolled threadsSeries : Platinum TT SeriesSpark Plug Code : PT16TTElectrode Tip Material : Platinum Electrode TipQuantity Sold : Sold individuallyWarranty : 1-year Denso 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 mmHeat Range : 16Thread Size : 14 mm thread size
SET-NP4511-4 Platinum TT Series Spark Plug, Set of 4
Denso®
SET-NP4511-4 Platinum TT Series Spark Plug, Set of 4
Part Number: SET-NP4511-4
Vehicle Info Required to Guarantee Fit
$26.99
Product Details
Series : Platinum TT SeriesSpark Plug Code : PT16TTElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 4Warranty : 1-year Denso 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 mmHeat Range : 16Thread Size : 14 mm thread size
SET-NP4511-6 Platinum TT Series Spark Plug, Set of 6
Denso®
SET-NP4511-6 Platinum TT Series Spark Plug, Set of 6
Part Number: SET-NP4511-6
Vehicle Info Required to Guarantee Fit
$33.99
Product Details
Series : Platinum TT SeriesSpark Plug Code : PT16TTElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 6Warranty : 1-year Denso 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 mmHeat Range : 16Thread Size : 14 mm thread size
SET-NP4511-10 Platinum TT Series Spark Plug, Set of 10
Denso®
SET-NP4511-10 Platinum TT Series Spark Plug, Set of 10
Part Number: SET-NP4511-10
Vehicle Info Required to Guarantee Fit
$47.49
Product Details
Series : Platinum TT SeriesSpark Plug Code : PT16TTElectrode Tip Material : Platinum Electrode TipQuantity Sold : Set of 10Warranty : 1-year Denso 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 mmHeat Range : 16Thread Size : 14 mm thread size
Page 1 of 8 | Showing 1 - 15 of 117 results

Top Rated Products

AC Delco SET-ACCR43TS-8 Professional Conventional Series Spark Plug, Set of 8
$26.49( Review)
My parts were just as described, fast shipping, excellent seller, will definitely be See More
Mary W.
VERIFIED PURCHASER
AC Delco SET-ACR42LTS-4 Professional Conventional Series Spark Plug, Set of 4
$18.99( Review)
Great oem parts at great price
Curtis R.
VERIFIED PURCHASER
Bosch 7971 OE/Specialty Spark Plug Series Spark Plug, Sold individually
$2.49( Review)
Great spark plugs, fast delivery, nice packaging
Willie W.
VERIFIED PURCHASER

Product Questions & Answers

Denso SET-NP4511-6 Platinum TT Series Spark Plug, Set of 6
$33.99
Q:Do they come adjusted already?
Cristhian D.
A:BEST ANSWERHi Cristhian, thank you for reaching out. Yes, they do. These spark plugs are ready for installation. You can use this link to order the part and take advantage of our low price for this item: https://www.carparts.com/spark-plug/denso/set-np4511-6?can=CPAP3648_CSQA_20230731 I hope this helps. Enjoy shopping. Show less
Aldrin P.
 
1 Question, 1 AnswerView all Q&As >