New old stock. Still unused and like new in the package. I'm selling these in sets of two (8 Spark plugs Total)
IRIDIUM SPARK PLUG
14mm - .750 in Reach - Gasket Seat - 4 Pack
Part # 37254
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
Explore MSD's range of unrivaled ignition systems and components at Holley.com!
| Brand | MSD |
|---|---|
| Clearance Category | Ignition |
| Emission Code | 2 |
| Heat Range | 5 |
| Hex Size | 5/8 |
| Length | Standard |
| Plug Style Code | 7IR5Y |
| Product Type | Spark Plug |
| Projected Tip | Yes |
| Quantity | 4 |
| Reach | 0.7500 |
| Resistor | Yes |
| Seat Type | Gasket |
| Style | Iridium |
| Thread Size | 14mm |
| Warranty | Limited 1 Year Warranty |
| UPC | 085132372546 |
| Part Number | 37254 |