Review on 🔌 Spectra Premium C-503 Coil Pack - Optimal for Every 2 Cylinders by Ryan Olsen

Perfect fit for my Buick Ultra! The original coils on these cars are prone to fail and cause misfires or intermittent misfires. 2 screws hold them together and that's less than 5 minutes of work. I've seen people put dielectric grease on the base of these coils where they sit on the module. It seems to help them. The auto parts store wanted about $30-40 for what these stores always rip off. Great price for them and haven't had any issues since installing them.