Diesel engine having cold start issues or a check engine light? This replacement glow plug wiring harness matches the fit and function of the original equipment harness and is made of quality materials for durability and reliable performance. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Ford F-250 Super Duty: 2008, 2009, 2010] - [Ford F-350 Super Duty: 2008, 2009, 2010] - [Ford F-450 Super Duty: 2008, 2009, 2010] - [Ford F-550 Super Duty: 2008, 2009, 2010]