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2020 GMC Sierra 3500 HD
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2020 GMC Sierra 3500 HD

2020 GMC Sierra 3500 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
$13.99
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLE 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 TypeElectrode 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 ReachSeries : Iridium IX SeriesGap Size : 0.04 in.Heat Range : 5Thread Size : 14 mm
Iridium IX Series Spark Plug, Set of 8
NGK®
Iridium IX Series Spark Plug, Set of 8
Part Number: SET-NGLTR5IX11-8
Guaranteed to Fit
$71.99
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L GAS, Gap 0.040 in.
Product Details
Electrode Tip Material : Iridium Electrode TipQuantity Sold : Set of 8Warranty : 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 ReachSeries : Iridium IX SeriesGap 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
$12.49
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
Product Details
Quantity 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. ReachSeries : Champion Iridium SeriesGap 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
$16.49
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Base 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 ResistorElectrode 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 mmSeries : Double Iridium SeriesHeat 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
$15.49
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLE 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 TypeElectrode 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.Series : Ruthenium HX SeriesInterchange Part Number : SP490, 90220, 41108, 12620540, AYFS22FM, 8125980040, L3Y218110Heat Range : 5Thread Size : 14 mm thread size
Ruthenium HX Series Spark Plug, Set of 8
NGK®
Ruthenium HX Series Spark Plug, Set of 8
Part Number: SET-NG90220-8
Guaranteed to Fit
$84.49
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L GAS, Gap 0.040 in.
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L GAS, Gap 0.040 in.
Product Details
Electrode Tip Material : Ruthenium Electrode TipReplaces OE Number : SP490, 90220, 41108, 12620540, AYFS22FM, 8125980040, L3Y218110Quantity Sold : Set of 8Warranty : 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.Series : Ruthenium HX SeriesInterchange 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
$12.99
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
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 TypeReplaces 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.

Series : Professional Iridium SeriesInterchange 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
$64.49
Vehicle Fitment
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L enginedesignationname: L8T, Eng.VIN: 7
Product Details
Replaces 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.

Series : Professional Iridium SeriesInterchange 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
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L
  • 2020 GMC Sierra 3500 HD Base 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 PlugElectrode 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 FitSeries : Double Iridium SeriesHeat 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
  • 2020 GMC Sierra 3500 HD SLE 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD SLT 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD AT4 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD Denali 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
  • 2020 GMC Sierra 3500 HD Base 8 Cyl 6.6L OE Type; Plug Type Res14Wmpb4
Product Details
Components : (8) Spark PlugQuantity 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. ReachSeries : Champion Iridium SeriesGap Size : 0.04 in.Heat Range : 14Recommended Use : OE ReplacementProduct Fit : Direct Fit
Page 1 of 1 | Showing 1 - 10 of 10 results

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AC Delco Professional Iridium Series Spark Plug, Set of 8
$64.49( Review)
Enjoy Application
Reginald T.
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AC Delco Professional Iridium Series Spark Plug, Sold individually
$12.99( Review)
Replaced the old plugs after 100k miles and the motor purrs like a kitten. The numberSee More
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NGK Ruthenium HX Series Spark Plug, Sold individually
$15.49( 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
$64.49
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 >