Holley Days Up to 20% Off
Motor Life Events Community Support
ASK OUR EXPERTS
1-866-464-6553
Videos
MSD

Iridium Spark Plug

14mm - .866 in Reach - Gasket Seat - 4 Pack

Part # 37284 Be the first to write a review
In Stock
Holley Days
$30.29
Suggested Retail
$37.40
Add to Wish List
Create a new list
Does it fit my vehicle?
2

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.

See Emissions Details

We Suggest

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 Code2
Heat Range5
Hex Size5/8
LengthStandard
Plug Style Code8IR5L
Product TypeSpark Plug
Projected TipExtended
Quantity4
Reach0.8660
ResistorYes
Seat TypeGasket
Special OffersHolley Days
StyleIridium
Thread Size14mm
WarrantyLimited 1 Year Warranty
UPC085132372843
Part Number37284
2

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

Also Bought

Reviews

    Your Review

    *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.