Bosch 101-905-622 Double Iridium Spark Plug

The Bosch 101-905-622 is a premium double iridium spark plug featuring an ultra-fine wire iridium firing pin and iridium ground electrode inlay for enhanced performance and durability. This spark plug is engineered with 1 kOhm interference suppression, a gasket seat design, and a fixed SAE connector.

Key Features:

• 0.6mm fine wire firing pin for superior ignitability and extended service life
• Laser-welded construction provides superior retention of iridium alloy to the ground electrode
• Copper core helps prevent pre-ignition and fouling
• Nickel-plated shell with rolled threads for anti-seize and corrosion protection
• Ribbed insulator prevents flashover
• 12mm thread diameter with 1.25mm pitch and 26.5mm reach
• Pre-gapped to 0.031 inches (0.8mm)

This OEM-quality spark plug is compatible with original part numbers 101 905 622 and 955 170 220 90. The double iridium design delivers reliable ignition, improved fuel efficiency, and longer service intervals compared to conventional spark plugs. Also cross-references to NGK ILZKR7A.