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Ferrari 365 GT4 BB Spark Plug

We have 5 Items In-stock. Select a year to continue.
$3.04 List Price $3.59 Save $0.55 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
  • Projected tip
  • Heat range 20

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#: NP3047
  • Brand: Denso
  • Electrode Core Material: Copper
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Gap Size: 0.027 in.
  • Reach: 19 mm
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Fits the following Ferrari 365 GT4 BB Years:
  • 1974 | 12 Cyl 4.4L | Base
$12.28 List Price $14.49 Save $2.21 Availability: In Stock
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DENSO PREMIUM CLASS IRIDIUM SPARK PLUG

Denso's Premium Class Iridium Spark Plugs is fast becoming the standard for today's high-tech engines. Employing a revolutionary 360 degrees laser welding process, Denso has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions. Denso's patented Iridium alloy is 6 times harder and 8 times stronger than conventional platinum and can handle temperatures in excess of 4,000 degrees Fahrenheit.

Specification:
  • 14 mm thread size
  • 19 mm reach
  • 0.81 in. hex size
  • 0.04 in. gap size
  • Gasket seat style
  • Resistor plug type
  • Tapered cut U-groove ground electrode
  • Removable terminal
  • Heat range 20

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#: NP5306
  • Brand: Denso
  • Electrode Core Material: Iridium
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Gap Size: 0.044 in.
  • Reach: 19 mm
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Fits the following Ferrari 365 GT4 BB Years:
  • 1974 | 12 Cyl 4.4L | Base
$5.36 List Price $6.32 Save $0.96 Availability: In Stock
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DENSO PREMIUM CLASS PLATINUM TWIN TIP SPARK PLUG

Denso's Premium Class Platinum Twin Tip Spark Plugs revolutionary twin tip design provides better ignitability for a more powerful and fuel-efficient combustion yielding better engine performance in terms of power and fuel economy.

Specification:
  • 14 mm thread size
  • 19 mm reach
  • 0.81 in. hex size
  • 0.04 in. gap size
  • Gasket seat style
  • Resistor plug type
  • Platinum alloy 1.1 mm fine wire center electrode
  • Titanium enhanced 1.5 mm fine wire ground electrode
  • Solid terminal
  • Heat range 20

Features:
  • Greatly improves mileage
  • Provides more power and faster starts
  • Reduce carbon emissions


  • SKU#: NP4502
  • Brand: Denso
  • Electrode Core Material: Platinum
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Gap Size: 1.02 mm
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Fits the following Ferrari 365 GT4 BB Years:
  • 1974 | 12 Cyl 4.4L | Base
$14.59 List Price $17.22 Save $2.63 Availability: In Stock
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DENSO PREMIUM CLASS IRIDIUM PLUG, SOLD INDIVIDUALLY -- 14 mm thread, 19 mm reach, 13/16 in. hex size, gasket seat, resistor type, removable terminal, 0.4 mm iridium projected center electrode, tapered cut U-groove ground electrode, 0.044 in. gap; 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#: NPIW20
  • Brand: Denso
  • Electrode Core Material: Iridium
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Gap Size: 1.1 mm
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Fits the following Ferrari 365 GT4 BB Years:
  • 1974 | 12 Cyl 4.4L | Base
$9.98 List Price $11.78 Save $1.80 Availability: In Stock
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DENSO PREMIUM CLASS DOUBLE PLATINUM SPARK PLUG, SOLD INDIVIDUALLY -- 14 mm thread, 19 mm reach, 13/16 in. hex size, gasket seat, resistor type, solid terminal, platinum tipped ground electrode and platinum tipped center electrode, projected tip, 0.032 in. gap; 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#: NPP20PR8
  • Brand: Denso
  • Electrode Core Material: Platinum
  • Plug Type: Resistor
  • Anticipated Ship Out Time: 1-2 business days
  • Electrode Tip Material: Platinum
  • Gap Size: 0.8 mm
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Fits the following Ferrari 365 GT4 BB Years:
  • 1974 | 12 Cyl 4.4L | Base