Product information “SM 2.5TFSI UPGRADE SPARK PLUG SET” SM 2.5TFSI UPGRADE SPARK PLUG SET Description 2.5TFSI (DAZA, DNWA, CZGB, CEPA)upgrade NGK RACING spark plugs for cars using upgrade engine software stage 1, 2, 3 Suitable and recommended for Unitronic, APR software applications, and many more. Been using these myself now for 20,000+ miles on stage 1 & 3 RS3.. PERFECT Recommend Gap set to 0.024″ +/- 0.002. Use a correct spark plug gap tool to adjust! Hardware Included 5 x NGK R7437-9 Spark Plug Benefits: Precious metals used for greater durability and lower voltage requirements Fine wire electrodes provide better sparking for enhancing ignitability Special configurations are used to improve throttle response Technical Details: General: Type: Resistor type Reach: 7mm (1/4″) Gap: .9mm (0.04″) Insulation Projection: .9mm (0.04″) Related links to “SM 2.5TFSI UPGRADE SPARK PLUG SET” Do you have any questions concerning this product? Further products by Sharp-Motorsport Ltd