FR7KII33X Double Iridium Spark Plug

The Bosch FR7KII33X (also known as Bosch 9603) is an original equipment fine wire double iridium spark plug engineered for high performance and extended service life. Its construction utilizes an ultra-fine wire iridium firing pin and an iridium tapered ground electrode, which combine to deliver superior ignitability and ensure optimal engine performance. The plug features a M14 x 1.25 thread size, a 19mm thread length, and a 16mm spanner size. The electrode gap is set at 1.1mm, and it is designed with a spark position of 4mm. This double iridium design signifies advanced original equipment technology, aiming to provide a longer-lasting and more reliable ignition source compared to conventional spark plugs. Key specifications include a core material of iridium and a top material type of nickel. The spark plug also incorporates a resistor, specifically a 6K Ohm resistor, and has a heat range of 7. The recommended tightening torque for this spark plug is 28 Nm. This spark plug is compatible with UTV vehicle types.