Frequently asked questions

What vehicles does the ACDelco 41-962 fit?▾

The 41-962 (GM part number 19299585) is the OEM replacement for 2006-and-older GM 5.3L V8 applications, including Chevrolet Silverado, Tahoe, Suburban, GMC Sierra, Yukon, and related Buick and Cadillac platforms. ACDelco Service Bulletin 13D-070 formally designated it as the correct plug for these applications. Always verify against your VIN at the dealer or the ACDelco fitment tool · 2007 and newer GM V8 applications may specify a different plug.

Is the ACDelco 41-962 iridium or platinum?▾

Double platinum. Platinum pads are on both the center electrode and the ground electrode. It is not iridium. The ACDelco iridium plug for similar GM V8 platforms is the 41-110. Service Bulletin 13D-070 reversed the earlier recommendation from 41-110 iridium to 41-962 double platinum for 2006-and-older applications · the two plugs are not interchangeable.

Should I re-gap the ACDelco 41-962 before installation?▾

Most units ship pre-gapped within tolerance for the application. A collapsed gap has been reported on one plug out of a set; gap inspection before installation is advisable. The standard GM 5.3L V8 gap range is approximately 0.040·0.060 inches; verify against your engine's service manual before installing.

What is the difference between the ACDelco 41-962 and 41-110?▾

The 41-962 is double platinum; the 41-110 is iridium. For 2006-and-older GM 5.3L V8 applications, ACDelco Service Bulletin 13D-070 designates the 41-962 as the correct plug. For 2007-and-newer applications or engines with variable valve timing, confirm with a dealer VIN lookup · the application boundary matters.

Why does ACDelco 41-962 Double Platinum Spark Plug have a California Prop 65 warning?▾

The Amazon listing for ACDelco 41-962 Double Platinum Spark Plug carries a California Prop 65 warning. California requires this warning on a very wide range of manufactured goods — including rubber, vinyl, plastic, and metal automotive parts — whenever trace exposure to any of roughly 900 listed substances (commonly phthalates or heavy metals) is possible, regardless of whether the specific product poses a meaningful health risk. As a passive accessory, ACDelco 41-962 Double Platinum Spark Plug has no Safety Data Sheet, so there's no chemistry breakdown to translate beyond that.

From the manufacturer

Marketing copy from ACDelco, via Amazon. Not editorial.

•One-piece, fired-in suppressor seal blends three glass types for a gas-tight seal that helps reduce radio frequency and engine interference, regulate spark plug energy, and protect against compression pressures for long life

•Double platinum point pad on center and ground electrode offer excellent durability and consistent voltage demands to help reduce wear on ignition system

•Pure copper core results in cooler electrode temperature for maximized durability and fouling resistance

•Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional

•ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors

•GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle

•GM regularly updates production and service part designs to integrate new materials and technologies

ACDelco·Spark Plug

ACDelco 41-962 Double Platinum Spark Plug

Name: 41-962 Double Platinum Spark Plug
Brand: ACDelco

7.4*/10

CarCareTruth ScoreRecommended

7.49.56.0

CarCareTruth Score

Recommended.

Provisional, owner feedback still building · reviewed May 2026

Ranks #6 of 31in Spark Plug→

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CarCareTruth's Analysis

Last reviewed May 27, 2026

TL;DR ACDelco 41-962 is the GM OEM replacement for 2006-and-older GM 5.3L V8 applications, per Service Bulletin 13D-070. Double platinum on both center and ground electrodes; pre-gapped for most units. Inspect the gap before installation: a collapsed gap has been reported.

What it is and how it performs

Double platinum on both center and ground electrodes, copper core, alumina-ceramic insulator, nickel-coated shell. ACDelco is the GM OE supplier; 41-962 and GM part 19299585 are the same plug under dual numbering. ACDelco Service Bulletin 13D-070 confirmed this as the correct replacement for 2006-and-older GM 5.3L V8 applications, covering Silverado, Tahoe, Suburban, Sierra, and related platforms. Community confirms fitment accuracy across multiple vehicles; no heat-range complaints or construction failures documented by owners.

Who should buy this, and who should skip it

Right pick for 2006-and-older GM 5.3L V8 owners (Silverado, Suburban, Sierra, Impala, and related platforms) where the OEM spec is the 41-962. Skip if your engine is a 2007-or-newer application requiring the updated OEM plug; confirm with a dealer VIN lookup.

Safety and environmental impact

No chemical exposure pathway: passive ceramic-and-steel ignition part, no SDS. Double-platinum electrodes mean small PGM extraction per plug; the 80,000·100,000 mile service class offsets consumption vs. copper. Steel shell is recyclable; alumina-ceramic insulator goes to landfill. No manufacturer take-back program as of 2026.