- AC Delco spark plug numbers have a specific format: the prefix “41” stands for the manufacturer’s product line1. The numbers after the prefix indicate the type of spark plug and the specific application:
- 100 – 199 = Iridium
- 600 – 699 = Resistor
- 800 – 999 = Double Platinum1.The recommended plug for your engine is the 41-162 plug (Iridium version), but the 41-962 (double platinum version) can also be used2.
Learn more:✕This summary was generated using AI based on multiple online sources. To view the original source information, use the "Learn more" links.The prefix “41” stands for the manufacturer’s product line (e.g., 41 = spark plug). Numbers after the prefix indicate the type of spark plug and also the specific application: 100 – 199 = Iridium 600 – 699 = Resistor 800 – 999 = Double Platinumwww.chevytalk.org/CT/ACPlugInfo.pdfThe correct plug for your engine is the 41-162 plug the Iridium version - OE plug. The 41-962 can also be used- but that is the double platinum version as an optional plug. The R44LTSM is just the conventional plug- they dont recommend using that one- because it would have to be changed every 30,000 miles.www.silveradosierra.com/threads/acdelco-spark-pl… The AC Delco Spark Plug Decoder Table - ChevyTalk
The AC Delco Spark Plug Decoder Table Prefix and suffix letters are used to identify a specific type plus the numbers relate to thread size and heat range. For example, the R45TS spark plug shown is: · R - Resistor · 4 - 14 mm Thread · 5 - Heat Range (range 1-5 start with a 3) · T - Taper …
Part - ACDelco
acdelco regular spark plugs - euro style numbers (common characteristics - j type ground electrode, resistor style) r4600 10.50 53.00 17.50 3.00 1.10 5.73 1.60 2.70 m14x1.25 15.88 4 …
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Manufacturer's Numbering Systems - Spark Plug
Wondering what the numbers and letters on a spark plug mean? These spark plug charts explain how each manufacturer's numbering system works. AC Delco Numbering System
What do the numbers mean on a AC Delco spark plug?
Mar 17, 2020 · What do the numbers mean on a AC Delco spark plug? · 1st number denotes thread size. · 2nd number denotes heat range. In the early 1990s, an all-numeric, identification …
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The AC Delco Spark Plug Decoder Table
The AC Delco Spark Plug Decoder Table ... after the prefix indicate the type of spark plug and also the specific application: · 100 – 199 = Iridium · 600 ...
What Is an ACDelco Heat Range Chart? - Reference.com
Aug 4, 2015 · The ACDelco heat range chart is a chart that provides the heat rating in addition to other characteristics of the ACDelco spark plugs. The heat rating indicates the thermal …
Chevelle Spark Plugs
33 rows · How to read an AC Delco spark plug nomenclature. The following matrix of spark plugs used are for AC Delco as installed. Some of these may no longer be readily available or have …
Choosing the Right Spark Plug - 355nation.net
RAPIDFIRE® spark plugs use a modified identification code that features a simple numbering system of numbers 1–12 and 14. For ACDelco conventional spark plugs, the prefix and suffix …
Need Help with AC Delco Plug Number - Chevy Message Forum
Apr 5, 2004 · The new spark plug, P/N 12571164 with AC Delco P/N 41-985, is gapped to 1.01 mm (0.040 inches) when the spark plug is made. The spark plug gap is set during manufacturing …
Ac Delco Spark Plug Chart: Choosing The Right Spark Plug For …
Aug 8, 2024 · Learn how to choose the right Ac Delco spark plug for your vehicle with our expert guide. We’ll cover spark plug options, features, and installation tips to help you make an …
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