Iridium Spark Plug

18mm - .4375 in Reach - Tapered Seat - 4 Pack

Part # 37444 Be the first to write a review

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$32.29

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$35.88

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Emissions

This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part.

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MSD's spark plugs are engineered to improve the efficiency of the combustion process to create the most power possible combined with increased durability. The center tip of the plug is made from iridium to promote the best spark and increase resilience. A proprietary ceramic material enhances the dielectric strength of the plug housing forcing the spark, even under extreme cylinder pressures, to jump across the plug gap to the ground electrode. This electrode is machined to expose more spark to the incoming gases to promote the most effective combustion event possible.

Features:

Proprietary plug design inside and out
Designed for use on high performance vehicles that utilize high output ignition systems
Machined electrode increases exposure to the flame to improve combustion
MSD’s proprietary ceramic formula provides the highest dielectric strength
Yttrium ground electrode reduces the chance of pre-ignition
Iridium tip improves cold starts
All spark plugs tested prior to packaging and shipping
Unique insulator design improves spark isolation
Lower voltage Requirements for longer coil life

About MSD

From small block street cruisers to 10000 horsepower top fuel dragsters, MSD's ignition systems has been the industry leader for over 40 years. MSD continues to push the envelope with cutting-edge ignition technology as well as intake manifolds and EFI systems.

Brand	MSD
Emission Code	2
Heat Range	5
Hex Size	13/16
Length	Standard
Plug Style Code	16IR5Y
Product Type	Spark Plug
Projected Tip	Yes
Quantity	4
Reach	0.4375
Resistor	Yes
Seat Type	Tapered
Style	Iridium
Thread Size	18mm
Warranty	Limited 1 Year Warranty
UPC	085132374441
Part Number	37444

This part is legal for sale and use on Emissions Controlled Vehicles when used in accordance with the manufacturers application guide because it is a direct or consolidated replacement part.

The following vehicles are considered Emissions Controlled Vehicles:

1966 and newer U.S. manufactured California Certified vehicles
1968 and newer U.S. manufactured Federally Certified vehicles
1968 and newer Foreign manufactured vehicle

Limited 1 Year Warranty: See Details

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*Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

Some parts are not legal for use in California or other states with similar regulations.

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