Due to extremely large order volume and limited product availability our order processing times are currently a minimum of 15-20 business days + shipping.
UPS and FedEx have suspended delivery guarantees on expedited shipments (such as overnight, 2-day, and 3-day).



JK: Dana 30/44 HD Ball Joint Kit w/out Knurl – Upper & Lower – Set of 4

SKU 3442002
Up Down

This item ships for free! (Continental U.S. only)

TeraFlex JK: HD Ball Joints are engineered to handle the increased load caused by oversized tires and offset wheels.

Fits all JK Wrangler/Unlimited models with Dana 30 or Dana 44 front axles.


• JK Wrangler (2-door)

• JK Wrangler Unlimited (4-door)

• Dana 30 front axle

• Dana 44 front axle


• Upper Ball Joints – pair

• Lower Ball Joints – pair

Features & Benefits:

• Heat treated 4140 chromoly ball/stud and 1045 carbon steel housing

• Magnesium Phosphate coating to inhibit corrosion throughout

Upper Ball Joint:

• Extremely hard sintered wear bushings to handle extreme side load demands w/out failure

• Factory-style serrated flange nut and grease fitting

Lower Ball Joint:

• Hard alloy tool steel slotted wear plate for ball/stud to socket wear protection

• Wear plate features dual helical grease channels for increased flow through entire joint ensuring longevity and predictable operation

• Factory-style serrated flanged castle nut

• Low-profile single lip dust seal prevents contaminants

• 30mm (1.18”) adjustable ball stud for accurate initial and future preload adjustments using simple hand tools

• 2 grease zerk fittings allow greasing access from either side


• Ball Joints w/out Knurl won’t score the inner knuckle and open the bore.

• Ball Joints w/ Knurl are for inner knuckles that have a “loose press fit” due to repeated ball joint replacement and/or where knurled ball joints have been installed.

Install Time: 4 Hours


Upper & Lower Ball Joint Kit w/out Knurl:

• Set of 4 (# 3442002)

• Set of 2 (# 3440000)

Upper & Lower Ball Joint Kit w/ Knurl:

• Set of 4 (# 3442022)

• Set of 2 (# 3440020)

Weight:  5.45 lbs

Vehicle Type:
JK Wrangler
JKU Wrangler Unlimited

Others Also Bought:
Log in to review this item!
November 21st 2015
Shawn Houser
These ball joints are awesome! I've replaced my ball joints twice over just 3 years of wheeling and daily driving. I finally purchased the Teraflex balljoints and could not be happier. I have 37 inch bead locked wheels, and it's been just about a year, and they are still nice and tight, and perform just like day one. I like that they are greasable and rebuild able. Another awesome product by Teraflex. Thanks!!
November 22nd 2015
Grant Passalacqua
I installedthe Teraflex ball joints on my JKU! They have been holding up great with my 35's. I love the fact that I can rebuild them which will save me $$ in the long run!
March 7th 2018
Set has performed well for 20K miles. Took a leap of faith and self installed using T-Flex video instructions and all went well. Save $$ and borrow a ball press from a local auto supply store. Love that they can be rebuilt. Very happy with this purchase.