OEMIgnition › Spark Plugs

AC-Delco 41-993

Iridium Spark Plug — AC Delco

98%

Data Confidence

Updated Oct 28, 2026

Part Specifications

Thread Size14mm x 1.25

Reach19mm

Hex Size5/8 in

Seat TypeGasket

Electrode MaterialIridium

Gap0.060 in

Heat Range5

ResistorYes

Verified equivalent parts across all indexed brands

6 equivalents found

Brand	Part #	Part Name	Match	Stock	Price
NGK	NGK 5464	Laser Iridium Spark Plug	99% match	Yes	$8.49
Bosch	Bosch 9652	Double Iridium Spark Plug	97% match	Yes	$9.99
Denso	Denso 3297	Iridium Long Life Spark Plug	96% match	No	$7.89
Champion	Champion 9407	Iridium Spark Plug	94% match	Yes	$6.99
Motorcraft	Motorcraft SP-546	Iridium Spark Plug	93% match	Yes	$7.49
Autolite	Autolite XP5364	Iridium XP Spark Plug	91% match	No	$5.99

Year	Make	Model	Trim	Engine
2019–2022	Chevrolet	Silverado 1500	LT, LTZ, High Country	5.3L V8 EcoTec3
2019–2022	GMC	Sierra 1500	SLE, SLT, Denali	5.3L V8 EcoTec3
2020–2022	Chevrolet	Tahoe	LS, LT, Premier, Z71	5.3L V8 EcoTec3
2020–2022	Chevrolet	Suburban	LS, LT, Premier	5.3L V8 EcoTec3
2020–2022	GMC	Yukon	SLE, SLT, AT4, Denali	5.3L V8 EcoTec3