MSD 37344 Iridium Spark Plug

14mm - .750 in Reach - Gasket Seat - 4 Pack;

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.;

General Policies

Payment Method

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Warranty & Return Policy

Holley Performance Products warrants new products to be free from defects in material and workmanship for a period of 90 days from date of purchase.

Holley Performance Products Limited Warranty specifically does not apply to products, which have been (a) modified or altered in any way; (b) subjected to adverse conditions, such as misuse, neglect, accident, improper installation or adjustment, dirt or other contaminants, water, corrosion, or faulty repair; or (c) used in other than those applications recommended by Holley Performance Products. Holley Performance Products also does not warrant, and disclaims all liability for products used in racing activities and/or applications other than those specifically recommended in the current brand catalog.

Buyer pays return shipping

Shipping & Tracking

Please see the “Shipping and Payment” tab
We ship all US orders via United Parcel Service (UPS Ground)
A signature is required on all UPS orders over $750
Tracking information will be sent via email after your package ships (you must supply a valid email address during checkout)
We ship within 1 business day upon receipt of payment
We do not ship to APO/FPO or US Post Office Box addresses
We ship internationally thru United States Postal Service (USPS) Express Mail International; allow extra time for international shipments
We can not ship as a "GIFT" or ship anything internationally with changes to the invoice

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