JK HD Dana 44/30 Upper & Lower Ball Joint Kit w/ Knurl – Teraflex Europe – Provenance USA


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UGS : TERA 3440020 Catégorie : Étiquettes : ,


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

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


  • Upper ball joints w/knurl – single
  • Lower ball joints w/knurl – single
  • Sold As A Set (For one side)

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


  • We recommend ball joints w/out knurls (P/N 3442002) or (P/N 3440000) 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: 3440020

Informations complémentaires

Poids 1.27 kg
Dimensions 20.32 × 8.89 × 6.35 cm