Bosch Spark Plug 4449 Attributes

• Resistor: Yes
• Electrode Type: Fine Wire Center
• Electrode Core Material: Platinum
• Electrode Tip Material: Yttrium
• Insulator Type: Non-Projected
• Thread Size (IN): 0.551 Inch
• Quantity: Single
• Reach: 0.438 Inch
• Seat Type: Tapered
• Wrench Diameter: 5/8 Inch

Bosch Spark Plug 4449 Features & Benefits

• Four Yttrium Enhanced Ground Electrodes Resist Spark Plug Wear And Oxidation, For Exceptional Performance Life
• Surface Air Gap Technology
• Surface Air Gap Design: The Platinum+4 Delivers A Powerful Spark For Efficient Combustion
• The Platinum Center Electrode Tip, Sintered Into An Extended Insulator Nose, Helps The Platinum +4 Reach A Self-Cleaning Temperature Only Seconds After Starting
• Provides Exceptional Wear Resistance
• Pre-Gapped: Installation Is Fast Because There Is Not Need To Gap
• Limited 90 Day Warranty