JK HD Dana 44/30 Upper & Lower Ball Joint Set With Knurl
TeraFlex JK/JKU Heavy-Duty Ball Joints are engineered to handle the increased load caused by oversized tires and offset wheels.
FITS:
Key Features
JK Wrangler (2-door) w/ Dana 30 or 44 axle
JKU Wrangler Unlimited (4-door) w/ Dana 30 or 44 axle
INCLUDES:
Key Features
Upper ball joints w/ knurl - pair
Lower ball joints w/ knurl - pair
UPPER BALL JOINT FEATURES
Key Features
Extremely hard sintered wear bushings to handle extreme side load demands w/out failure
Magnesium Phosphate coating to inhibit corrosion throughout
Heat treated 4140 chromoly ball/stud & 1045 carbon steel housing
Factory-style serrated flange nut & grease fitting
LOWER BALL JOINT FEATURES
Key Features
Hard alloy tool steel slotted wear plate for ball/stud to socket wear protection
Wear plate features grease channels for increased flow through entire joint ensuring longevity & predictable operation
Magnesium Phosphate coating to inhibit corrosion & friction throughout
Heat treated 4140 chromoly ball/stud
Huge 30mm (1.18”) ball
Factory style serrated flanged castle nut
Ball joint pre-load adjustability provides the end user w/ near effortless wear adjustment (kit includes Preload Adjustment Tool)
Low-profile single lip dust seal eliminates torn conventional dust boot concerns
Adjustable ball stud retaining ring for accurate initial & future preload adjustments that can be done w/out any axle disassembly
Adjustable preload can be performed w/ simple hand tools
Adjustable end cap w/ two zerk fittings allow greasing access from either side w/out axle shaft removal even w/ larger RCV shafts
Dual helical grease grooves machined in the retaining ring allow spent grease to exit through the low-profile seal
Low-profile seal prevents contaminants, while allowing spent grease to evacuate from the ball joint
NOTE:
We recommend Ball Joints w/out Knurls (# 3442002 or # 3440000) as they will not score the inner knuckle & open up the bore. We also offer Ball Joint w/ Knurls (# 3442022 or # 3440020) for ball joints that have a loose press fit in the inner knuckle due to repeated ball joint replacement or if knurled ball joints have been installed in the past. INSTALL TIME: 4 Hours