Autolite Iridium XP Automotive Replacement Spark Plug, XP985 (1 Pack)

Idk how to tell if these are counterfeit or not, but I replaced the worn-to-nubs plugs in my 97 TJ with these and it's been running well all summer. Works for me!

These are the plugs to go with for Jeeps with the 4.0L engine. Autolite Iridium XP985. They work great and last a long time.

As easy to install as any spark plug and does not need to be gapped.

WOW these worked great. I have a 2001 Jeep Cherokee with the 4.0 L engine. The manual says to replace spark plugs every 30,000 miles and since the car is new to me and has 130,000 miles I decided to flush and replace the oil, coolant, transmission, brake, transfer case and differential fluids. I figured that I should replace the spark plugs as well and even looked at some high performance options. The car was running fine before the new plugs but after I have lot more power. The car used to struggle climbing hills at high altitude but no more. I don't know how old the NGK plugs were but these are a huge improvement. I did have to gap them but it was super easy. I love the Autolite XP985 Iridium XP Spark Plug.How easy? Follow these steps 30 minutes start to finish.1. Remove the four 13mm screws holding the ignition system on the passenger side of the engine.2. Unplug the wires on the ignition assembly on the back and remove the ignition assembly from the spark plugs.3. Loosen the old plugs, blow the gunk from around them.4. Gap the new plugs my engine sticker said .035"5. Pull the old plugs one at a time and replace with new till finger tight6. Tighten an additional quarter turn7. Clean the ignition contact and wire contacts on the ignition assembly8. Replace the ignition assembly, be careful to make sure the spark plugs fit into the rubber plugs.9. ENJOY!

Timely delivery and meeting all my expectations.