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2021 Chevrolet Silverado 2500 HD
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2021 Chevrolet Silverado 2500 HD

2021 Chevrolet Silverado 2500 HD Spark Plugs

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Iridium IX Series Spark Plug, Sold individually
NGK®
Iridium IX Series Spark Plug, Sold individually
Part Number: NGLTR5IX11
Guaranteed to Fit
$13.49
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
Product Details
Notes : 5000 Ohms Resistance; 53 mm Insulator Height; 5/8 in. Hex Size; (1) Standard Ground Electrode; Nickel Core Ground Electrode Material; Taper Cut Core Design; Flat Seat; Non-Removable Nut Terminal TypeSeries : Iridium IX SeriesElectrode Tip Material : Iridium Electrode TipQuantity 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 : 25 mm ReachGap Size : 0.04 in.Heat Range : 5Thread Size : 14 mm
Champion Iridium Series Spark Plug, Sold individually
Champion®
Champion Iridium Series Spark Plug, Sold individually
Part Number: C339777
Guaranteed to Fit
$11.99
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
Product Details
Series : Champion Iridium SeriesQuantity Sold : Sold individuallyWarranty : 7-year, unlimited-mileage or recommended change interval Champion 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.

Reach : 1 in. ReachGap Size : 0.04 in.Heat Range : 14Recommended Use : OE ReplacementProduct Fit : Direct Fit
Double Iridium Series Spark Plug, Sold individually
Bosch®
Double Iridium Series Spark Plug, Sold individually
Part Number: BS96307
Guaranteed to Fit
$15.99
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
Product Details
Notes : 1.25 mm Thread Pitch; 16 mm Hex Size; Tapered Seat Type; Solid Terminal Type; 0.8 mm Center Electrode Size; Fine Wire Type; Projected; (1) Standard; With ResistorSeries : Double Iridium SeriesElectrode 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 : Iridium Electrode CoreReach : 25 mm ReachGap Size : 0.9 mmHeat Range : 8Thread Size : 14 mm
Ruthenium HX Series Spark Plug, Sold individually
NGK®
Ruthenium HX Series Spark Plug, Sold individually
Part Number: NG90220
Guaranteed to Fit
$14.99
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
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 : SP490, 90220, 41108, 12620540, AYFS22FM, 8125980040, L3Y218110Quantity 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 : 25 mm ReachGap Size : 0.04 in.Interchange Part Number : SP490, 90220, 41108, 12620540, AYFS22FM, 8125980040, L3Y218110Heat Range : 5Thread Size : 14 mm thread size
Professional Iridium Series Spark Plug, Sold individually
AC Delco®
Professional Iridium Series Spark Plug, Sold individually
Part Number: AC41114
Guaranteed to Fit
$12.49
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
Product Details
Notes : 0.98 in. Thread Reach; 14 mm Hex Size; 25.3 mm Insulator Height; 4000-7500 Ohms Resistance; (1) Ground Electrode; Iridium Ground Electrode Tip; Iridium Material Grade; Fine Wire Center Electrode Design; Conical Seat TypeSeries : Professional Iridium SeriesReplaces OE Number : 12622441Quantity 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.

Interchange Part Number : 12622441
Professional Iridium Series Spark Plug, Set of 8
AC Delco®
Professional Iridium Series Spark Plug, Set of 8
Part Number: SET-AC41114-8
Guaranteed to Fit
$63.49
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
Product Details
Series : Professional Iridium SeriesReplaces OE Number : 12622441Quantity Sold : Set of 8Warranty : 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.

Interchange Part Number : 12622441
Double Iridium Series Spark Plug, Set of 8
Bosch®
Double Iridium Series Spark Plug, Set of 8
Part Number: SET-BS96307-8
Guaranteed to Fit
$70.49
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L
Product Details
Notes : 1.25 mm Thread Pitch; 16 mm Hex Size; Tapered Seat Type; Solid Terminal Type; 0.8 mm Center Electrode Size; Fine Wire Type; Projected; (1) Standard; With ResistorComponents : (8) Spark PlugSeries : Double Iridium SeriesElectrode Tip Material : Iridium Electrode TipQuantity Sold : Set of 8Warranty : 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 : Iridium Electrode CoreReach : 25 mm ReachGap Size : 0.9 mmRecommended Use : OE ReplacementProduct Fit : Direct FitHeat Range : 8Thread Size : 14 mm
Champion Iridium Series Spark Plug, Set of 8
Champion®
Champion Iridium Series Spark Plug, Set of 8
Part Number: SET-C339777-8
Guaranteed to Fit
$68.49
Vehicle Fitment
  • 2021 Chevrolet Silverado 2500 HD Custom 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD LTZ 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD LT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD WT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2021 Chevrolet Silverado 2500 HD High Country 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
Product Details
Components : (8) Spark PlugSeries : Champion Iridium SeriesQuantity Sold : Set of 8Warranty : 7-year, unlimited-mileage or recommended change interval Champion 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.

Reach : 1 in. ReachGap Size : 0.04 in.Heat Range : 14Recommended Use : OE ReplacementProduct Fit : Direct Fit
Page 1 of 1 | Showing 1 - 8 of 8 results

Top Rated Products

AC Delco Professional Iridium Series Spark Plug, Set of 8
$63.49( Review)
Enjoy Application
Reginald T.
VERIFIED PURCHASER
AC Delco Professional Iridium Series Spark Plug, Sold individually
$12.49( Review)
Replaced the old plugs after 100k miles and the motor purrs like a kitten. The numberSee More
Mitch S.
VERIFIED PURCHASER
NGK Ruthenium HX Series Spark Plug, Sold individually
$14.99( Review)
They're pretty good give good power and a smooth idle.
Anthony L.
VERIFIED PURCHASER

Popular Products

Product Questions & Answers

AC Delco Professional Iridium Series Spark Plug, Set of 8
$63.49
Q:Are these pre-gaped ?
Ricardo R.
A:BEST ANSWERHi Ricardo, I'm glad to assist you. Yes. It is pre-gapped already (0.04 inches). If your car/truck appears in the vehicle fitment information below (upon selecting the year, make, model, submodel, and engine size), it is a guaranteed fit part. Grab our lowest price for a set and click the link below to buy it later. Happy shopping! https://www.carparts.com/spark-plug/ac-delco/set-ac41114-8?can=cpje1043_CSQA_20240307 Show less
Jeonino E.
 
1 Question, 1 AnswerView all Q&As >