Hinges take the hit.
Fix them before
the door does.

Read the symptoms

Grab the bottom corner of a door and try to move it perpendicular to its swing arc. On a healthy hinge the door should feel planted; you should get essentially zero lateral movement. Any play at all means the pin-and-bushing clearance has opened up past the point where lubrication will close it back.

Three things to check in order:

• Vertical play: lift up on the door with both hands. If it moves more than a couple millimeters before the hinge takes the load, the bushing is gone.
• Door sag: a door that hangs lower than it used to, hits the striker off-center, or needs lifting to latch is showing the same wear in slow motion.
• Scraping on reinstall: if the door chatters or binds as you set the pin, the pin or the bore has worn out of round. Greasing won't fix geometry.

Light surface corrosion on an otherwise tight pin is a grease problem. A pin with visible grooves, or a bore that is egg-shaped when you pull the pin, is a replacement problem.

Grease it or replace it?

The JL and JT door hinges have no grease fitting from the factory. There is nowhere to push fresh grease into the bore without pulling the pin. What most people call greasing the hinges is spraying a dry-film lubricant or penetrating oil into the gap around the knuckle, which helps with surface corrosion and squeaks but does nothing for worn clearance inside the bore.

• Grease it: pin is smooth, bore shows no visible wear, the joint is tight but stiff or squeaky. Pull the pin, wipe it clean, apply a thin coat of white lithium or synthetic grease, reinstall.
• Replace it: measurable play in the joint, visible scoring on the pin, door sag, or scraping on reinstall. A grease coat on a worn pin delays the noise by one weekend and nothing more.

If you are pulling the doors once a month or more, the greasing window is short. Most frequent-removal owners skip straight to replacement and move to a greaseable kit so they can actually maintain it going forward.

What to buy

Three categories on the market, all sold as pin-and-bushing sets:

• OEM-spec steel kits: exact-fit replacements using factory dimensions and plain steel pins. Lowest price. Durability matches or slightly exceeds the originals, which is fine if you pull the doors a few times a year.
• Aftermarket stainless kits: 304 or 316 stainless pins with UHMW or Delrin bushings. Stainless resists the surface corrosion that accelerates wear on steel pins, and the slicker bushing material reduces friction at the pin. Worth the premium if you are removing the doors more than monthly.
• Greaseable conversion kits: add a Zerk fitting to the hinge knuckle so you can pack fresh grease into the bore without pulling the pin. More involved install (some require drilling), but it changes the maintenance equation entirely. Pull the doors every weekend? This is the right setup.

Buy for your model year. JL (2018-present) and JT Gladiator (2020-present) share hinge geometry; JK (2007-2018) takes a different pin diameter and should not swap between them. Check the listing for your exact year before ordering.

JK vs. JL/JT fitment

The JK uses a 1/2-inch diameter hinge pin. The JL and JT moved to a 9/16-inch pin when the platform changed in 2018. These are not interchangeable. An OEM-spec kit for a JL will not fit a JK; most aftermarket stainless kits list both and ship the right size if you select your model, but read the listing, because some generic kits cover only one generation.

The JL and JT also use a plastic bushing sleeve that floats inside the knuckle. The JK hinge knuckle has a slightly different tolerance from the factory, and the bushing geometry differs. This matters most when buying a greaseable conversion: confirm the kit is built for your specific platform, not just labeled "Wrangler."

Reinstall right

New pin, new bushing, clean bore. In that order. Before the pin goes in:

1. Clean the bore with a rag and brake cleaner. Any grit left in there starts grinding the new bushing from the first swing.
2. Seat the bushing fully before the pin goes in. A bushing that is cocked even slightly gives you a tight spot in the swing and makes you think the pin is the problem.
3. Apply grease to the pin before installing. Packing grease around the gap after installation does not reach the contact surface inside the bore.
4. Hang the door and run through the full swing before calling it done. The door should open and close without binding and sit flush with the body. If it does not, the pin is not fully seated or the bushing is off.

Torque the hinge bolts to spec when you button up. JL door hinge bolts take 25 ft-lb. Under-torqued bolts let the hinge shift against the pillar over time and accelerate pin wear faster than a worn bushing ever would.

Keeping them alive longer

With a standard steel or stainless kit: pull the doors, pull the pins, wipe them clean, regrease, reinstall. Once per season minimum; once a month if you are running doors-off regularly.

With a greaseable conversion: pump one or two shots of grease through the Zerk before reinstalling the doors, every two or three removal cycles. The bore stays packed and you never have to pull the pin for routine maintenance.

Storage matters too. If the pins sit in the knuckles for months with the doors off and the bore exposed to weather, surface rust starts fast on steel pins. A light coat of grease before storage and a pin-protector plug (several kits include them) keep the bore clean through the off-season.