My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

MSD 37224 Iridium Spark Plug 14mm Tapered Seat

(Ford F-150 1975-96, Mustang 1970-72, 1983, F-250 1975-97, Bronco 1975, 1978-96, Thunderbird 1983, F-350 1975-97, F-100 1975-83, F53 1997 + 161 more models)

Manufacturer

Picture for manufacturer MSD

Part Number

37224
6 reviews
Sale Price

$15.27

Out of Stock

Notify me when available
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The MSD 37224 Iridium Spark Plug is a high-performance, iridium-tipped spark plug engineered to maximize combustion efficiency and deliver reliable ignition under demanding conditions.

Key Features:

  • Iridium center tip — promotes a stronger, more consistent spark while offering superior resistance to wear and erosion
  • Copper center core — ensures excellent electrical conductivity for reliable spark delivery
  • Proprietary ceramic insulator — enhances dielectric strength, forcing the spark to jump the gap even under extreme cylinder pressures
  • Machined ground electrode — exposes more spark to incoming fuel/air mixture for more complete combustion
  • Yttrium-enhanced ground strap — improves heat resistance and reduces the risk of pre-ignition
  • Lower voltage requirements — reduces coil stress for extended coil life
  • Unique insulator design — improves spark isolation for cleaner ignition events
  • 14mm thread, 0.437 in. reach, tapered seat, projected tip
  • Resistor-equipped — compatible with modern ignition electronics
  • All plugs are individually tested prior to packaging

MSD's iridium spark plugs are purpose-built for performance applications, delivering improved throttle response, reliable cold starts, and long service life whether on the street, strip, or trail.

Products specifications

Fits

Ford F-150 1975-96, Mustang 1970-72, 1983, F-250 1975-97, Bronco 1975, 1978-96, Thunderbird 1983, F-350 1975-97, F-100 1975-83, F53 1997, Falcon 1970, E-350 Econoline 1980-96, E-150 Econoline 1975-96, F-250 HD 1997 + 157 more models

Seat Type

Tapered

Thread Size

14mm

Style

Iridium

Length

Standard

Projected Tip

Yes

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Resistor

Yes

Package Quantity

4

Hex Size

0.625 in.

Reach

0.4375 in.

Hi there

Start to finish everything went well.

I paid a little extra for the fast delivery but it was worth it. I got it quickly and it worked great

Well-designed website and search, prices and checkout experience was nice.

The only problem was confusion with process and delivery information. And the picture of the generator wasn't what my pump was for. Despite that, it was right product delivered as fast as Amazon which brought me comfort to the confusion. Thanks for your service.

Easy and fast!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy