Teraflex JK/JKU HD Dana 30/44 Upper & Lower Ball Joint Kit w/out Knurl - Set of 4

TeraFlex JK/JKU Heavy-Duty Ball Joints are engineered to handle the increased load caused by oversized tires and offset wheels.

FITS:

• JK Wrangler (2-door) w/ Dana 30 or 44 axle 
• JKU Wrangler Unlimited (4-door) w/ Dana 30 or 44 axle

INCLUDES:

• Upper ball joints w/out knurl - pair 
• Lower ball joints w/out knurl - pair

UPPER BALL JOINT 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

• 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