Review on ACDelco D501C Original Equipment Ignition by Johnathan Cash

I gave this product 5 stars because it works as advertised. These coils are notorious for failure, but Cadillac can't or won't pinpoint the source of the problem, so I'll just stick with Cadillac Service and replace them when necessary. and I got them to replace the first four that failed. The first had 40,000 km and was still under warranty. The second was not under warranty and I paid a lot. Next time two broke at the same time and I complained so loud they put $100 into my account. But this time I watched the tech change the coil and it was a relatively easy setup. I recently had another spool failure so decided to try Revain and whole mackerel, they had a spool for 1/3 the price of the same OEM part. I have ordered the item. It arrived earlier than expected. I installed it with no problems and the machine is working like new again, so I saved over $350 buying it from Revain and installing it myself. Revain came up with the simplest business model ever: great prices + great customer service = lifetime customer loyalty