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Dodge Diplomat Spark Plug

We have 9 Items In-stock. Select a year to continue.
$5.25 List Price $6.20 Save $0.95 Availability: In Stock
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NGK GR4 V-POWER SERIES SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread, 19 mm reach, 20.6 mm hex size, gasket seat, resistor, solid terminal, projected tip, V-grooved centered electrode, 1.02 mm gap, heat range 4; Features unique V-power design that directs the spark to the edge of the electrode where it develops more rapidly; Increases ignitability even in lean burn conditions and lowers ignition system voltage requirements; Corrugated ribs prevent flashover and purest alumina silicate in its ceramic insulator gives greater strength and better heat transfer; Copper cored and triple sealed to further aid in heat removal and prevent interior leakage; Trivalent metal plating has superior anti-corrosion and anti-seizing properties; Increases fuel economy and lower emissions; A highly durable spark plug against electrical and chemical wear.
  • SKU#: NG2635
  • Brand: NGK
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Nickel alloy
  • Gap Size: 1.016 mm
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Fits the following Dodge Diplomat Years:
  • 1984-1989 | 8 Cyl 5.2L | SE
  • 1979-1989 | 8 Cyl 5.2L | Salon
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$5.56 List Price $6.56 Save $1.00 Availability: In Stock
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DENSO REGULAR CLASS TRADITIONAL SPARK PLUG

Denso's Regular Class Traditional Spark Plugs guarantee the quality of the product they produce because every component that leaves their factories has been designed with precision, manufactured to the strictest OE standards and subjected to rigorous safety and performance tests.

Specification:
  • 14 mm thread size
  • 19 mm reach
  • 0.81 in. hex size
  • 0.02 in. gap size
  • Gasket seat style
  • Resistor plug type
  • U-groove ground electrodes
  • Removable terminal
  • Fully projected tip
  • Heat range 16

Features:
  • Designed with heavy duty insulator that provides unparalleled dielectric strength and thermal conductivity under extreme temperatures
  • Five-rib design prevents flashover while decreasing voltage loss
  • Copper glass seal bonds the center electrode and insulator together for a gas-tight seal
  • Platinum center electrode utilizes platinum to shrink the surface area of the center electrode tip for maximum firing performance and minimum voltage requirements
  • Platinum ground electrode resists gas and electrical erosion and corrosion extending service intervals to 60,000 miles


  • SKU#: NPW16EXRU
  • Brand: Denso
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Gap Size: 0.027 in.
(see more)
Fits the following Dodge Diplomat Years:
  • 1984-1989 | 8 Cyl 5.2L | SE
  • 1983-1989 | 8 Cyl 5.2L | Salon
(see more)
$5.46 List Price $6.44 Save $0.98 Availability: In Stock
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BOSCH SUPER CLASS PLATINUM+2 SPARK PLUG

Bosch Super Class Platinum+2 Spark Plug uses surface air gap firing technology and dual yttrium enhanced ground electrodes for longer life and has more platinum for smoother acceleration and optimum engine performance.

Specifications:
  • 14 mm thread size
  • 19 mm reach
  • 20.6 mm hex size
  • Platinum plug
  • Gasket seat style
  • Interference suppression resistor
  • Surface air gap plug
  • Heat fused platinum center electrode
  • 2 ground electrodes
  • Heat range 9

Features:
  • Fine wire platinum center electrode which is heat fused into the extended ceramic insulator reduces the voltage necessary to jump the gap as well as reduces quenching
  • Reaches self cleaning temperature faster for quicker starts and increased fuel efficiency


  • SKU#: BS4307
  • Brand: Bosch
  • Electrode Core Material: Platinum
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Platinum
  • Reach: 19 mm
(see more)
Fits the following Dodge Diplomat Years:
  • 1989 | 8 Cyl 5.2L | SE, Salon
  • 1984-1988 | 8 Cyl 5.2L | SE
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$8.34 List Price $9.84 Save $1.50 Availability: In Stock
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AC DELCO SPARK PLUG ASSEMBLY, SOLD INDIVIDUALLY -- Constructed from top quality materials to help the engine run clean and longer; Features a copper-core center electrode for improved heat transfer to the tip; Hot-tip insulators heats fast and fires hot to promote longer electrode life for miles of dependable performance; Nickel-chrome alloy sheathing on the ground and center electrodes offers maximum resistance against wear from spark erosion and the corrosive environment of the combustion chamber; Engineered to high standards and tested under extreme conditions to exceed OE specifications; Replaces OE number 5614243.
  • SKU#: AC41-905
  • Brand: AC Delco
  • Fit Note: Car
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Double Platinum
  • Warranty: 100,000-mile AC Delco limited warranty
 
Fits the following Dodge Diplomat Years:
  • 1983 | 6 Cyl 3.7L | Medallion, Salon
  • 1982 | 6 Cyl 3.7L | Medallion
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$12.95 List Price $15.28 Save $2.33 Availability: In Stock
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PULSTAR IRIDIUM PULSE SPARK PLUG, SOLD INDIVIDUALLY

Pulstar Pulse Spark Plug contains integrated electrical capacitor that focuses on the energy of the plug. Its electrical energy delivers the fuel mixture far beyond the typical conventional spark plugs and produces not only better fuel efficiency, but also increased torque and horsepower.

Specifications:
  • 14 mm thread size
  • 11.6 mm reach
  • 16 mm hex size
  • 1.14 mm gap
  • 0.5 mm fine-wire iridium tipped center electrode with copper core
  • Tapered seat
  • Resistor
  • Nickel alloy ground electrode

Features:
  • Latest in performance ignition technology
  • Provides up to 12 percent more horsepower and torque plus livelier throttle response than conventional spark plugs
  • Allows more efficient burning of fuel and generates a much larger spark at twice the speed than ordinary spark plugs
  • Promotes an increased gas mileage and greater horsepower to the wheels
  • Reduces carbon dioxide emissions and provides cleaner exhaust and more efficient combustion
  • Uses an internal circuit that delivers up to 1,000,000 watts of peak power that increases peak spark current by up to 20,000 times that of a traditional spark plug


  • SKU#: PSTRCB1H10
  • Brand: Pulstar
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Iridium
  • Gap Size: 1.14 mm
(see more)
Fits the following Dodge Diplomat Years:
  • 1983 | 6 Cyl 3.7L | Medallion, Salon
  • 1981-1982 | 6 Cyl 3.7L | Medallion, Salon
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$5.61 List Price $6.62 Save $1.01 Availability: In Stock
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MOTORCRAFT SUPPRESSOR SPARK PLUG, COPPER, SOLD INDIVIDUALLY

Delivers maximum voltage to the spark plug while maximizing performance and increases engine life; Resists corrosion and abrasion; Reduces the chance of misfire.


  • SKU#: MISP425
  • Brand: Motorcraft
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Nickel alloy
  • Warranty: 12-month or 12,000-mile Motorcraft limited warranty
 
Fits the following Dodge Diplomat Years:
  • 1979-1983 | 6 Cyl 3.7L | Salon
  • 1978-1983 | 6 Cyl 3.7L | Medallion
(see more)
$5.07 List Price $5.98 Save $0.91 Availability: In Stock
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CHAMPION TRADITIONAL SPARK PLUG, SOLD INDIVIDUALLY

Champion Traditional Spark Plugs have original equipment on a wide variety of engines for many years. Features nickel alloy centers and ground electrodes with reasonably good wear characteristics.

Specifications:
  • 14 mm thread diameter
  • Projected tip

Features:
  • Made of corrosion resistant zinc plated shell with copper plus core design
  • Most durable high voltage semiconductor


  • SKU#: C3325
  • Brand: Champion
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: Same day - 1 business day
  • Electrode Tip Material: Copper
  • Reach: 14 mm
(see more)
Fits the following Dodge Diplomat Years:
  • 1983 | 6 Cyl 3.7L | Medallion, Salon
  • 1981-1982 | 6 Cyl 3.7L | Medallion, Salon
(see more)
$5.95 List Price $8.99 Save $3.04 Availability: In Stock
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E3 DIAMONDFIRE SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread size, 19 mm reach, 0.81 in. hex size, gasket seat, resistor, 1.016 mm non-adjustable gap size, copper core electrode material, nickel alloy electrode tip material, projected insulator type; Guaranteed to provide more power while using less fuel, quicker starts and less fouling than competitive standard spark plugs.
  • SKU#: PYRE346
  • Brand: E3
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Product Class: Fuel saver
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Nickel alloy
(see more)
Fits the following Dodge Diplomat Years:
  • 1984-1989 | 8 Cyl 5.2L | SE
  • 1979-1989 | 8 Cyl 5.2L | Salon
(see more)
Rating: (see review/s)

"These spark plugs are impossible to screw in. The thread is good and can go into the engine but the bolt you have to use to screw it in has to be paper thin since the overal spark plug is too fat." posted by: Car person on February 9, 2011

$21.90 List Price $32.17 Save $10.27 Availability: In Stock
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ACCEL U-GROOVE PERFORMANCE SPARK PLUGS, SET OF 8

Accel U-Groove Spark Plugs are constructed with a highly purified Alumina insulator that prevents arcing at plug boot and provides superior strength and thermal conductivity. Copper-glass seal bonds insulator to electrode for a gas-tight seal, and copper-core center electrode that comes with nickel chrome sheel for superior electrical conductivity and maximum heat dissipation.

Specifications:
  • Resistor plug type

Features:
  • Electric heat seal ensures stable heat range for uniform performance
  • Machine rolled threads guarantee trouble free installation and removal, protecting the expensive cylinder heads
  • Unique U-groove ground electrode developed to meet the demand for improved ignitability and increased fuel combustion resulting in less flame dissipation
  • Grooves the flame to grow and create a larger flame front for a more complete combustion even in the case of lean air-fuel mixture
  • Produces greater firing energy without increasing spark plug gap and larger spark nucleus that stimulates faster combustion
  • Provides an increase in performance with improved throttle response, greater fuel efficiency, and reduced emissions


  • SKU#: A358181
  • Brand: Accel
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 Business Days
  • Electrode Tip Material: Copper
  • Reach: 0.75 in.
(see more)
Fits the following Dodge Diplomat Years:
  • 1984-1989 | 8 Cyl 5.2L | SE
  • 1983-1989 | 8 Cyl 5.2L | Salon
(see more)
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