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

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

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

Includes:

• Upper ball joints w/knurl - pair
• Lower ball joints w/knurl - pair
• Sold As A Set (both sides)

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 and 1045 carbon steel housing
• Factory style serrated flange nut and grease fitting
• W/knurls

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 and predictable operation
• Magnesium Phosphate coating to inhibit corrosion and friction throughout
• Heat treated 4140 chromoly ball/stud
• Huge 30mm (1.18 inch) 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 and 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/ (2) zerk fittings (Frog Eye) allow greasing access from either side w/out axle shaft removal
• 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
• W/knurls

Note:

• We recommend ball joints w/out knurls (P/N 3442022) or (P/N 3440020) as they will not score the inner knuckle and open up the bore.
• Also offered w/ knurls (P/N 3442022) or (P/N 3440020) for ball joints w/ 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
• SKU: 3442022