🔌 Enhanced Denso 671-4268 Spark Plug Wire Set with Improved Performance Review

This is for your car A to B not the best quality but does the job if your car is bigger than A to B recommend a better brand or a better OEM.

Fits my 2002 Mazda Protege perfectly, easy to install and works great for a fraction of what local shops charge to replace these 2 spark plug leads.

coils replaced first (which usually fixes idle stuck on P5s). That does not work. Bought these cables, installed them in minutes and - boom - smooth idle.

New L4 UF407 5C1208 C1340 coils installed - on our old 2003 Mazda Protege - fit perfectly and the engine "over revving" in wet weather is gone now. See my review of ignition coils.

OEM fit and quality, that's Denso. Apparently there was a tiny hole in one of my spark plug shells that was making my 2002 Mazda Pro5 twitch and wobble. I replaced them with these, problem solved.

Also comes with dielectric grease. The only slight downside is that the thermal foil runs along the cable exactly where it's supposed to press against the cable holder on the spool. It's a little tiring to move around as those suction cups grip the wire tightly. But the engine runs well and smoothly again.