DelphiXS10389 Spark Plug Wire Set

Great products!

They fit perfect for my 2000 GMC 4.8L, a snap on the spark plug and a double snap on the coil, and they came with a packet of silicone, started right up, no adjustment needed, they were a little bit shorter than the Denso wires I replaced, but I saw a lot of Delphi under the hood, so I figured they would work, although the box had 6 plugs on the cover, so I thought they sent the wrong set, but I guess thats the picture they have on all of them, and whoever designed this engine with that last plug like that,with a drain pan next to it, with no room at all to get your hand in there, its even hard to remove the plug wire if its on good with no lube, with all that leftover space under the hood that shouldnt happen, they need to design vehicles that are easy to maintain, but I guess they dont want that, they should because longevity is what sells cars for a lot of people, most people, I did 7 plugs in 20-30 minutes and #8 probably 2 hours.

Item works great, got rid of some of my misfires. And with the price, nothing further to be said.

Delivered as described

Installed on a 2012 suburban LTZ. Delphi are nice cables, Just had to swap the heat shields from the old Wires and put on these. Slightly (~1”) Longer than the AC Delcos they replaced, which is nice. We’ll see how they last.

Not as nice as the made in USA Delphi wires I replaced from 12 years ago. These were made in Brazil if you’re interested.1) the wire wasn’t fused tight to the boot so if the connector doesn’t line up with the plug, you’re pushing the boot on but the wire is backing out of the boot. And then it will never reach unless you feed more wire into the boot for a second attempt. But if you feed too much then you need to push the boot on more after clicking onto the plug. It’s like you had to hold the wire and boot to push on simultaneously. Some boots were tighter to the wires than others.2)the curvature of the wire didn’t flow into angle of the coil boot. It was like they were exactly opposite like the wire wanted to go one way when the boot needed to the other way.UPDATE: after a few weeks I left a meeting to find my truck had a rough idle misfire. Turns out one of the wires fell off the plug and was arching to the exhaust manifold. I’ve clipped a lot of wires on plugs before (14 years wrenching on race cars that always were being worked on, 35+ years wrenching on my own stuff including back when plugs needed frequent replacement, etc.) and NEVER had one fall off the plug before. When I put it back on I could tell it wasn’t very tight.

these are good wires,however you have to make sure when you order these that you know exactly which coils you have on your vehicle,GM had 2 diff coils in some yrs,if you dont get the right ones they wont fit.

ILike it but too expensive