Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.

Sponsored by:

Sponsored by: DashLynx

Radiator cap

Reply Subscribe

Old

12-31-2023, 04:51 AM

#1

Skunk 316

JK Newbie

Thread Starter

Join Date: May 2023

Location: Owensboro Kentucky

Posts: 15

Received 1 Like on 1 Post

Cool

Radiator cap

I have an 08 wrangler with the 3.8 L bought used starting to see coolant residue around the radiator cap. It has a 15 pound cap on it but I believe from reading it needs an 18 pound cap.
Thoughts?

Skunk 316 is offline

Reply Like

Old

12-31-2023, 05:33 AM

#2

resharp001

JK Jedi

FJOTM Winner

Join Date: Jun 2013

Location: Willow Park, TX

Posts: 10,583

Received 1,827 Likes on 1,597 Posts

Default

Factory cap says 18psi. I no longer have the factory radiator but I kept my cap from it. I'd be happy to send it for the price of shipping, but probably easier to just swing by auto store and grab an aftermarket for under $10.

resharp001 is offline

Reply Like

The following users liked this post:

Skunk 316 (12-31-2023)

Old

12-31-2023, 10:34 PM

#3

RustyEdge

JK Newbie

Join Date: Dec 2023

Location: NJ

Posts: 9

Received 2 Likes on 2 Posts

Default

I had the same problem on my 2010 last summer. I picked up a Stant off Amazon and it did the trick.

Stant Radiator Cap - https://a.co/d/ebrJmv0

RustyEdge is offline

Reply Like

Old

01-06-2024, 11:09 AM

#4

MountainTrails88

JK Enthusiast

Join Date: Apr 2020

Location: Bellingham, Wa

Posts: 138

Received 10 Likes on 9 Posts

Default

I first verify your Coolant reservoir fluid level varies when hot and cold. Caps are usually about $12.

MountainTrails88 is offline

Reply Like

Reply Subscribe

Reply Share

First
Prev
1 / 1
Next
Last

All times are GMT -8. The time now is 11:25 AM.