Spectra Premium C-591 Coil-on-Plug Ignition System Review

I bought these at the price of a used one as a spare to keep in the glove box. The Def is a great fallback for the price, but luckily I haven't had to use it yet.

installed them - they worked for 6 months after which i started to feel small misfires. then catastrophic misfire 2 cylinder. I thought the cylinder head gasket had blown! But I switched back to the old ones and the car ran fine. It's cheap and doesn't break Buy I want a refund

Nice factory replacement coil and a somewhat neat engine compartment. The gray top of the coil has a matte texture that seems to pick up dirt and stains easily. So if you're a fan of a clean engine bay, keep that in mind when installing. Also note that this uses a 4 pin connector if you can't tell from the picture. It runs stable on my VW MK4 GTI 1.8t.