Spark plug wires, cap and rotor for a 4.0 what do you run?
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 3,074
Likes: 0
From: Bergen County, New Jersey U.S.A.
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
I see a ton of spark plug threads but none for the cap, rotor and wires?
So what do you use... I have a 90 4.0 if that matters.. thank you
So what do you use... I have a 90 4.0 if that matters.. thank you
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 3,074
Likes: 0
From: Bergen County, New Jersey U.S.A.
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
Seasoned Member
Joined: Jan 2011
Posts: 294
Likes: 1
From: New York
Year: 1996
Model: Cherokee
Engine: 4.0L
Trending Topics
CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
Napa carries two lines of ignition components. Regular and premium. The premium have the brass contacts. They will have the correct application data or you may be able to look it up.
CF Veteran




Joined: Nov 2010
Posts: 5,841
Likes: 117
From: In the middle of Minnesota!
Year: 1999
Model: Cherokee
Engine: 4.0
Stay away from el-cheapo wires. Something middle of the pack is usually sufficient.
I have bought Belden wires from Napa and have had good luck.
Napa can set you up with everything for that tuneup. Good luck!
I have bought Belden wires from Napa and have had good luck.
Napa can set you up with everything for that tuneup. Good luck!
Thread Starter
CF Veteran
Joined: Feb 2011
Posts: 3,074
Likes: 0
From: Bergen County, New Jersey U.S.A.
Year: 1990 Laredo
Model: Cherokee
Engine: 4.0 Inline 6 Renix
Senior Member

Joined: Nov 2010
Posts: 511
Likes: 3
From: Chadbourn, NC
Year: 88, 89, 93 & 99
Model: Cherokee
Engine: 4.0
I'm running a Conrad Gold cap and rotor button (with brass inserts and rotor contact) Great product but I seem to remember reading that they've been hard to find the last couple years... Used to be able to order them through Autozone though. Accel Super Stock 8mm wires and Splitfire plugs.


