6778 Injector Puller & 6779 Injector Puller, 7222 Injector Tube RemoverInstaller Tools for GM 6.6L Duramax Diesel, Replace J-44639, J-4659, J-45910

The 6778 Injector Puller and 6779 Injector Puller, along with the 7222 Injector Tube Remover/Installer Tools, are designed for use with GM 6.6L Duramax Diesel engines. These tools aim to replace the Kent Moore J-44639, Kent Moore J-4659, and J-45910 injector tools. They are marketed as essential tools for removing and installing injectors and injector tubes. According to customer reviews, the 6778 tool has received mixed feedback. Some customers have reported that the tool broke while using it on the third injector, despite having years of experience with Duramax injectors. One customer even shared a photo of the broken tool and expressed their disappointment, stating that a $100 tool should not break easily. However, the same customer mentioned being impressed with the seller's customer service. They mentioned that the company responded to their email within a few hours and offered to send a replacement tool. The customer commended the quick response and efficient resolution of the issue. Another customer reported that their 6778 tool broke on the first injector and discovered that it had a casting crack even before it was coated. They expressed their disappointment, emphasizing that such an issue should have been caught in quality control. There was also a customer who claimed that these tools did not work for an LML Duramax engine and advised others to save their money. They suggested using the keeper upside down with a hammer and drift for a more effective method. Overall, the reception of the 6778 Injector Puller and 6779 Injector Puller seems to be mixed. While some customers have experienced issues with the tool breaking, others have praised the customer service provided by the seller.