PRObuilt & ECObuilt Ball Joint Arms

Engineering Install & Setup Documentation

Precision components restoring original Volkswagen suspension geometry. Process — not parts — determines ride quality.

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PRObuilt Arms

Powder-coated finish
Premium hardware
Detailed QC inspection
Lifetime finish warranty

ECObuilt Arms

Raw finish
Budget-conscious option
Same geometry
Same articulation design

Installation procedure is identical for both systems.

This is not a direct swap. Improper order creates camber imbalance, steering wander, and tire wear.

Do not match previous eccentric settings
Do not reuse previous toe measurements
Reset the system baseline

Loosen lug nuts ¼ turn
Safely support vehicle
Remove brake assembly (do not disconnect brake lines)
Release tie rod tapers properly (avoid pickle forks)
Clean torsion leaves before installing new arms
Lubricate lightly before seating arms fully
Set camber baseline to approximately 90°

Professional 4-wheel alignment is required after installation.

Upper Ball Joint Nut	43 ft-lbs
Lower Ball Joint Nut	43 ft-lbs
Grub Screw	18 ft-lbs
Jam Nut	36 ft-lbs
Tie Rod Ends	33 ft-lbs
Wheel Lug Nuts	Per wheel manufacturer

Improper torque introduces deflection that feels exactly like steering play.

Steering Feels Loose

Damaged taper
Under-torqued fasteners
Worn center pin

Uneven Tire Wear

Camber not adjusted
Toe misaligned

Clunk Over Bumps

Grub screws not fully torqued
Jam nut not seated

Pump beam zerks every oil change (2–3 pumps each)
Inspect ball joint boots every 5,000 miles
Verify grub screw torque at 500 miles
Inspect eccentric orientation annually

If your removed components are OEM VW stamped and structurally sound, they may qualify for core eligibility.

Call or Text 1-623-518-3537 for verification.

Shop PRObuilt Arms Shop ECObuilt Arms Call 1-623-518-3537