Bosch 79105 Spark Plug - Intake Side

Bosch Nickel Spark Plug 79105 Overview

Bosch 79105 is a conventional nickel-copper spark plug built for steady ignition performance and value. It uses a copper-core center electrode with a nickel tip, a projected ceramic insulator, and a resistor design to support consistent spark delivery in the ignition system.

Compatible With 2008-2013 Ram 1500 intake side applications, 2008-2011 Dodge Dakota intake side applications, and 2008-2009 Chrysler Aspen, Dodge Durango, Jeep Commander, and Jeep Grand Cherokee intake side applications. Bosch 79105 is a direct-fit spark plug choice for drivers servicing these V8 and V6 gasoline applications with OE-style specifications.

Key Features

• Conventional nickel-copper spark plug construction
• Copper-core center electrode for heat transfer and durability
• Nickel center and ground electrode tip materials
• Resistor design with 5,000 ohm resistance
• Standard J-gap ground configuration
• 14 mm thread diameter, flat seat, and 26.5 mm reach
• Projected ceramic insulator for stable combustion chamber placement
• Heat range 8 for specified engine applications

Product Details

The Bosch Nickel line focuses on practical ignition service parts that meet or exceed original equipment specifications for nickel-copper core spark plugs. Part number 79105 uses a standard center electrode design, a single ground electrode, and a non-removable nut terminal for a familiar OE-style layout. For Ram 1500, Dodge Dakota, Chrysler Aspen, Dodge Durango, Jeep Commander, and Jeep Grand Cherokee service, this spark plug supports routine ignition maintenance where correct heat range, reach, and seat type matter.

This part cross-references Bosch 79105 for the same application.

Common Issues This Part Can Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire conditions related to aged ignition components
• Reduced throttle response from degraded plug performance
• Service intervals requiring replacement of worn nickel-copper plugs

Installation Notes

Verify engine application, intake-side position, thread diameter, reach, and seat type before installation. Check and confirm the pre-gap against the vehicle service specification prior to use. Inspect ignition coils, boots, and plug wires during service so the new spark plug is installed into a clean, properly functioning ignition system.

Quality Assurance

Bosch engineers this Nickel spark plug line to meet or exceed OE specifications for nickel-copper core applications. Part number 79105 is built with a copper-core center electrode, nickel electrode tips, and a resistor design for dependable service in the listed vehicle applications.