![]() 500" thread reach, non-resistor, tapered seat. ACDelco iridium spark plugs are the latest evolution in high-performance plug electrode material and are designed to last 100,000 miles. NGK makes all AC Delco 41-110 (OE) and 41-962 (service replacement after March 2013), iridium spark plugs. ![]() 460" thread reach, resistor with tapered seat. 1970 - 1989 SB Chevrolet LT-1 350 CI V8 engines: 14MM thread. The Denso PTF16TT platinum / titanium spark pl ugs are a step hotter than the Denso PTF20TT platinum / titanium tipped spark plugs. The Denso spark plugs have now been in my engine for more than 6,000 miles and after an inspection at 4000 miles, they look new. When I purchase a set of AC Delco #1 spark plugs and discoverd that practice, I sent them back for credit and ordered a set of Denso PTF20TT Platinum / Titanium tip spark plugs (made in Japan) which replaces the AC Delco #1 and #2 Rapid Fire platinum spark plugs. Buy a 2014 Cadillac CTS Spark Plug at discount prices. AC Delco Part Number 12568387 and 41-101. The new spark plug, ACDelco Part Number 41-985 (12571164), is gapped to 1 ac-delco cross reference fram filters: ac-delco pf20 ph8a ac-delco pf20 ph16 ac-delco pf20 ph43 ac-d WIX AIL FILTER CROSS REFERENCE CHART WIX AIR FILTER CROSS REFERENCE LIST: AC CHAMP FRAM HASTINGS PENNZOIL PUROLATOR WIX A392C / A1608C For example, the R45TS spark plug. AC Delco Iridium spark plug used on 5.7L GM Fuel Injected Engines. Replacement parts for Mercruiser, Mercury, Volvo, Indmar, OEM, PCM, and more. Apparently whoever is making AC Delco spark plugs has began relabling and reboxing AC Delco CR43TS spark plugs as Rapid Fire #1 and #2 spark plugs. GM and AC Delco spark plugs for marine inboard engines. shipping 000 other spark plugs Im needing to change plugs on my 2012 silverado 5 ACDelco 41-103 Professional Iridium Spark Plug (6 Pack) 16 Im not sure what the reach is on the MR43LTS or R44LTS are as I cant find any info on them for those. Notes: If you have Denso plugs installed you may want to consider a new set of AC Delcos. If you install UltraPower you have 2 choices in spark plug upgrade. I used AC Delco Rapid Fire #1 and #2 platinum tip spark plugs until they started coming from Mexico. Author Topic: The AC Delco spark plug numbering system (Read 39475 times) 0 Members and 1. But, most come with AC Delco 41-983s gapped at. ![]() There is no hotter spark Rapid Fire plug to replace the AC Delco #10 Rapid Fire spark plugs.
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