FITMENT: Compatible with GM Duramax 6.6L engines 2005-2011. Replace to 6779 and similar to J-46594. FEATURES: 1）Upgrade Design-- Safely pulls the injectors from the cylinder heads without pulling the injector cups and without causing damage to the injector body. 2）Material-- Advanced heavy duty steel with black oxide finish, durability, impact and wear resistance, anti-corrosion and anti-rust. High precision and hardness to provide a much longer service life. .
