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  See more parts for Dodge Ram 3500
Select the year of your Dodge Ram 3500:
MSD Iridium Spark Plug - 37444
MSD Iridium Spark Plug - 37444 - Image 2 MSD Iridium Spark Plug - 37444 - Image 2
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
Specifications:
  • Brand: MSD
  • 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


Other Part Numbers:
MSD Ignition #MSD-37444

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
1994-1995
 Dodge Ram 3500
1966-1974, 1980-1992
 Ford Bronco
1957-1958
 Ford Club
1955-1964
 Ford Country Sedan
1955-1959, 1969-1974
 Ford Country Squire
2025
 Ford Custom 300
1975-1978
 Ford E-100 Econoline
1979-1980, 1982-1989, 1991-1996
 Ford E-150 Econoline
1981-1989, 1991-1996
 Ford E-250 Econoline
1991-1996
 Ford E-350 Econoline
1957-1958, 1964-1983
 Ford F-100
1975-1996
 Ford F-150
1961-1996
 Ford F-250
1975-1996
 Ford F-350
1955-1970
 Ford Fairlane
1978-1983
 Ford Fairmont
1960-1970
 Ford Falcon
1959-1967
 Ford Galaxie
1972
 Ford Gran Torino
1975-1982
 Ford Granada
1967-1983
 Ford LTD
1970-1977
 Ford Maverick
1964-1973, 1979-1982
 Ford Mustang
1982
 Ford Mustang GT
1974
 Ford Mustang II
1971-1974
 Ford Pinto
1957-1962, 1969-1972
 Ford Ranch Wagon
1957-1974, 1976-1978
 Ford Ranchero
1957-1958
 Ford Skyliner
1960
 Ford Starliner
1955-1958
 Ford Sunliner
1955-1973, 1980-1982
 Ford Thunderbird
1968-1974
 Ford Torino
1955-1958
 Ford Victoria
1961-1972
 Lincoln Continental
1969-1971
 Lincoln Mark III
1979-1982
 Mercury Capri
1960-1969, 1971-1977
 Mercury Comet
1961-1964
 Mercury Commuter
1967-1970, 1974, 1980-1982
 Mercury Cougar
1955-1956
 Mercury Custom
1964-1971
 Mercury Cyclone
1969-1970
 Mercury Marauder
1969-1973
 Mercury Marquis
1961-1963
 Mercury Meteor
1975-1980
 Mercury Monarch
1955-1956, 1964-1968
 Mercury Montclair
1968-1974
 Mercury Montego
1955-1956, 1961-1964, 1968-1973
 Mercury Monterey
1964-1968
 Mercury Park Lane
1978-1983
 Mercury Zephyr

MSD Ignition Banner

Who is MSD Ignition?

MSD Ignition started back in 1970. Based in El Paso Texas, the company is known for creating quality ignition systems for various automobiles. Today, they are considered the leading company when it comes to the ignition system and has become a brand recognized all over the world.

Changing the Way Vehicles are Made

MSD has helped shape the automotive industry by being the first company in the world to conduct an experiment regarding Multiple Spark Discharge for a vehicle’s ignition system. It has been suggested by Engineers who were working on the White Sands Missile Range in Southern Mexico. They noticed that their quest for power is limited by the amount of spark the ignition system can only generate. Hence, the idea of Multi Spark Discharge.

Racing Application

Soon after the product introduction, racers started applying it to their race cars. Due to its success, other top teams started using MSD which helped paved the way for the brand’s popularity. The majority of the race engines today use MSD and have proven to produce race champions.

The company operates in a 100,000 square feet facility in Texas. They house some of the most state-of-the-art equipment that helps them create products that are superior in quality.

Purchase MSD Ignition Products at Vivid Racing

If you are in search of the best ignition system available in the market, then MSD is the brand for you. Tested by many enthusiasts and racers for years, MSD has proven to provide optimum performance in every vehicle.




MSD warrants this product to be free from defects in material and workmanship under its intended normal use*, when properly installed and purchased from an authorized MSD dealer, for a period of one year from the date of the original purchase. This warranty is void for any products purchased through auction websites. If found to be defective as mentioned above, it will be repaired or replaced at the option of MSD. Any item that is covered under this warranty will be returned free of charge using Ground shipping methods.

This shall constitute the sole remedy of the purchaser and the sole liability of MSD. To the extent permitted by law, the foregoing is exclusive and in lieu of all other warranties or representation whether expressed or implied, including any implied warranty of merchantability or fitness. In no event shall MSD or its suppliers be liable for special or consequential damages.

Intended normal use means that this item is being used as was originally intended and for the original application as sold by MSD. Any modifications to this item or if it is used on an application other than what MSD markets the product, the warranty will be void. It is the sole responsibility of the customer to determine that this item will work for the application they are intending. MSD will accept no liability for custom applications.

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