1978 Dodge Diplomat Spark Plugs

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    • (0 reviews)
      # mpn4075461371
      Dodge Diplomat 5.2L / 5.9L 1978, Double Platinum Spark Plug by Denso®. Extra Long Life Double Platinum Plug with Platinum Ground Strap. Denso Double Platinum plug features platinum on both the center and ground electrodes. This precious...
      Platinum center electrodePlatinum ground electrode
      $5.23
    • (0 reviews)
      # 100104027
      Dodge Diplomat 1978, Iridium IX™ Spark Plug by NGK®. Designed for performance enthusiasts who want extreme ignitability, improved throttle response and superior anti-fouling, these spark plugs are a great option for modified engines...
      Designed for outstanding acceleration, high fuel efficiency, and durabilityEnsure a consistently stable spark
      $6.44 - $6.97
    • (0 reviews)
      # 409144120
      Dodge Diplomat 1978, Iridium Power™ Spark Plug by Denso®. Iridium Ultimate Endurance and Power - Performance Upgrade with World's Smallest Center Electrode (0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology) & Tapered Tip Patented...
      0.4 mm iridium center electrode, the slimmest in the industryPatented self-cleaning insulator/electrode design
      $5.08
    • (0 reviews)
      # 407385027
      Dodge Diplomat 1978, G-Power™ Platinum Spark Plug by NGK®. Platinum spark plugs by NGK are designed to improve fuel efficiency, lower emissions, and provide quicker starts while remaining durable under high heat. With 0.6 mm platinum...
      Designed for faster starts and quicker accelerationBetter fuel economy and lower emissions compared to a traditional plug
      $2.65
    • (0 reviews)
      # mpn1890151695
      Dodge Diplomat 5.2L / 5.9L 1978, Nickel Spark Plug by NGK®. These products by NGK are the plugs of choice in millions of vehicles designed to provide consistent performance while ensuring OE quality, fit, and function. They are...
      Designed for consistent performanceMeet OE quality, fit, and function
      $1.62
    • (0 reviews)
      # 100104030
      Dodge Diplomat 1978, V-Power™ Nickel Spark Plug by NGK®. NGK spark plugs offer higher performance compared to standard plugs. NGK spark plugs feature a V-groove center electrode and concave ground electrode that lowers ignition...
      Lower ignition system voltage requirementsGreater ignitability and performance over conventional spark plugs
      $1.61 - $1.67
    • (0 reviews)
      # 409141616
      Dodge Diplomat 1978, Iridium TT™ Spark Plug by Denso®. Ultimate Endurance and Power. 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not...
      Designed to replace your factory spark plugsManufactured to stringent quality standards
      $6.19
    • (0 reviews)
      # 337989506
      Dodge Diplomat 1978, Original U-Groove Nickel Spark Plug by Denso®. OE Recommended Resistor Plug with Patented U-Groove Design. Denso's patented U-Groove spark plug enables complete combustion by allowing the spark to fill the gap...
      100 percent pre-fired to ensure reliable operationCopper core center electrode for superior thermal conductivity
      $1.47 - $1.60
    • (0 reviews)
      # 409157628
      Dodge Diplomat 1978, Platinum TT™ Spark Plug by Denso®. Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap. The Platinum TT™ concept originated from Denso's latest original...
      1.1 mm platinum center electrodeTitanium-enhanced alloy ground electrode
      $2.58
    • (0 reviews)
      # 48992033
      Dodge Diplomat 1978, Copper Spark Plug by Motorcraft®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you waste your...
      Direct OEM replacementRecommended by Ford Motor Company
      $1.51 - $1.60
    • (0 reviews)
      # 708094553
      Dodge Diplomat 1978, Copper Plus Spark Plug by Champion®. As the leaders in precious metal technologies as well as F.I.S.S resistor technology and MLR™ technology, Champion spark plugs provide enhanced ignition and longer life.
      $1.50 - $10.28
    • (0 reviews)
      # 708136678
      Dodge Diplomat 1978, Double Platinum Spark Plug by Champion®. With platinum fine wire welded onto the nickel alloy center electrode and a platinum pad welded to the ground electrode, these products provide long-lasting service life and...
      Designed to provide dependable and long-lasting performancePlatinum center and ground electrodes ensure longer life
      $4.67 - $4.76
    • (0 reviews)
      # 524072849
      Dodge Diplomat 1978, Platinum Power Spark Plug by Champion®. With a platinum tip welded to a nickel alloy center electrode, these spark plugs provide superior wear characteristics. Combining a thin-wire center electrode with a V-trimmed...
      Platinum center electrode reduces gap growth, lowering the voltage requirements, in turn reducing the chance of misfireThin center electrode and v-trimmed ground electrode enhance ignitability and reduce quenching
      $2.18
    • (0 reviews)
      # mpn4486063127
      Dodge Diplomat 3.7L 1978, Professional™ Rapidfire Platinum Spark Plug by ACDelco®. Designed for today’s most popular autos, as well as several marine applications, ACDelco’s Rapidfire® Platinum Spark Plugs fit engines using...
      Ribless insulator that improves the plug-to-boot sealTapered center wire electrode with a platinum pad reduces the firing diameter and helps improve the firing efficiency by concentrating and directing energy needed to fire the plug with less voltage
      $3.22
    • (0 reviews)
      # mpn4495966808
      Dodge Diplomat 5.2L / 5.9L 1978, Spark Plug Non-Fouler by Dorman®. The Spark Plug Non-Foulers prevent spark plug damage, repairing spark plug fouling in engines running too rich or oil issues to improve engine performance. Dorman offers...
      Easy to installNon-Foulers help protect spark plugs from damage
      $3.24
    • (0 reviews)
      # mpn4495966858
      Dodge Diplomat 3.7L 1978, Spark Plug Non-Foulers by Dorman®. The Spark Plug Non-Foulers prevent spark plug damage, repairing spark plug fouling in engines running too rich or oil issues to improve engine performance. Dorman offers a...
      Easy to installNon-Foulers help protect spark plugs from damage
      $2.55
    • (0 reviews)
      # mpn857163
      Dodge Diplomat 3.7L 1978, Spark Plug Tube Seal Set by Fel-Pro®. If you are looking for quality sealing solutions, Fel-Pro offers you various replacement products from seals and bolts to O-Rings and dowel pins. Engineered using the...
      Direct OEM replacement for a proper fitEnsures reliable sealing performance
      $3.88
    • (0 reviews)
      # 803882719
      Dodge Diplomat 1978, Super Plus™ Spark Plug by Bosch®. Bosch Super Plus delivers outstanding durability and reliability you want for your vehicle. Its tapered, v-profile ground electrode makes for better starting in cold weather and...
      Heavy-duty yttrium-enhanced copper core center electrode for a 50% longer performance life vs. even OE plugsTapered, v-profile nickel chromium ground electrode for improved starting in cold weather and increased fuel ignitability
      $2.79 - $3.22
    • (0 reviews)
      # 803919122
      Dodge Diplomat 1978, Copper Spark Plug with Resistor by Autolite®. These spark plugs by Autolite are specially designed and manufactured to ensure quick starts, dependable performance, and smooth acceleration. The products are made of...
      Copper-glass seal bonds insulator, terminal post center electrode together; assures full required voltage at spark gap; gas-tight seal (100% leak proof)Multi-rib insulator reduces danger of "flash-over"
      $2.44
    • (0 reviews)
      # 803932919
      Dodge Diplomat 1978, PlasmaCore™ Inconel Electrode Pulse Plug with Resistor by Pulstar®. Inconel-electrode Pulse Plug. Designed specifically for most popular vehicles, PlasmaCore™ Inconel Electrode Pulse Plug provides great fuel...
      Increased horsepowerBetter torque
      $14.95 - $119.60
    • (0 reviews)
      # 803928241
      Dodge Diplomat 1978, Spark Plug by MSD®. Designed utilizing the latest technology, this product by MSD features premium quality and will perform better than advertised. Perfect for your vehicle and lifestyle, it is manufactured to meet...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $6.44 - $6.63
    • (0 reviews)
      # mpn3224839216
      Dodge Diplomat 3.7L 1978, Spark Plug Tube Seal by Victor Reinz®. Is your vehicle hard to start? Does it miss under load and idle rough? Is your gas mileage not what it used to be? Your ignition system may need repair, but before you...
      OE quality parts from top original equipment and aftermarket manufacturersThe finest quality at a great price
      $4.51


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    1978 Dodge Diplomat Spark Plugs Reviews

    Average rating:  4.5  4.5 - 4 reviews
    4.8 of 5
    Great
    Works great. One of the best and most helpful things I’ve ever bought.
    PPosted by Preston (Westminster, CO) / December 13, 2017
    2002 Toyota 4Runner
    Was this review helpful for you? Yes
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