Specifications:

  • Brand New Suspension Kit
  • Comes as a 6 Piece Kit
    • Fits LH (Driver Side) & RH (Passenger Side)
  • Direct replacements
  • Built to strict quality control standards

Our steering and suspension components come pre-greased, sealed for long life, and do not require the extra maintenance typically required by greasable versions.

Direct Fit

Application-specific, with no modifications required.

Rigorously Tested

Made from higher quality materials than the competition. Built to have a longer life in any environment or road conditions.

State of the Art Manufacturing

By the same factories that the OEMs use.

Prepackaged for Your Convenience

Carefully assembled to include all of the parts you need, saving time and money.

Part Details

  • Kit Includes: (2) Front Lower Ball Joints
  • Kit Includes: (2) Front Upper Control Arms
  • Kit Includes: (2) Front Upper Ball Joints
  • Quantity: 6 Piece Set

Lifetime Warranty

This item is backed by a Limited Lifetime Warranty. In the event this item should fail due to manufacturing defects during intended use, we will exchange the part free of charge (excludes shipping charges) for the original purchaser.

  1. step : Removing the Wheel (0:46)
    • Pry off the center cap with a flat blade screwdriver
    • Loosen the lug nuts with the vehicle on the ground
    • Raise the vehicle with a floor jack
    • Secure the vehicle on jack stands
    • Remove the lug nuts
    • Pull off the wheel
  2. step : Removing the Ball Joint (1:11)
    • Separate the axle from its housing with a pry bar and a hammer
    • Unclip the brake line from its clips
    • Remove the ball joint retaining ring with a hammer and punch
    • Remove two 10mm bolts from the steering knuckle bracket
    • Apply penetrating oil to the control arm nut and bolt
    • Remove the 15mm nut and bolt from the control arm
    • Strike the control arm with a hammer to loosen it
    • Pull the steering knuckle forward
    • Support the wheel knuckle with wire ties
    • Cut off the ball joint boot with a razor
    • Fit a ball joint press to the ball joint
    • Tighten the press to press out the ball joint
    • Remove the ball joint press
    • Tap out the ball joint with a hammer
  3. step : Installing the New Ball Joint (4:22)
    • Push the new ball joint into place
    • Fit the ball joint press onto the ball joint
    • Tighten the ball joint press to press in the ball joint
    • Tap the ball joint in with a hammer
    • Tap the snap ring into place with a hammer and punch
    • If you are replacing the snap ring, put the new ring on with snap ring pliers
    • Push the steering knuckle into place
    • Push the control arm onto the ball joint
    • Tap the control arm onto the ball joint with a hammer
    • Start the 15mm nut and bolt into the control arm
    • Remove the wire ties from the steering knuckle
    • Push the axle into its housing
    • Tighten the 15mm nut to 50 foot-pounds of torque
    • Fasten the grease fitting onto the ball joint with a 10mm wrench
    • Add grease to the ball joint with a grease gun
    • Insert the two 10mm bolts into the steering knuckle bracket
    • Clip the brake line into place
  4. step : Reattaching the Wheel (7:00)
    • Slide the wheel into place
    • Start the lug nuts by hand
    • Tighten the lug nuts preliminarily
    • Lower the vehicle to the ground
    • Tighten the lug nuts to 100 foot-pounds in a crossing or star pattern
    • Reattach the center cap

Tools needed for replacement:

    General Tools

  • Floor Jack
  • Jack Stands
  • Hammer
  • Razor Blade / Gasket Scraper

  • Materials, Fluids, and Supplies

  • Rust Penetrant
  • Bearing Grease
  • Wire Ties

  • Pliers, Cutters & misc Wrenches

  • Wire Cutters

  • Ratchets & Related

  • Ratchet
  • Torque Wrench

  • Screwdrivers & Related

  • Flat Blade Screwdriver
  • Pry Bar

  • Sockets - Metric

  • 15mm Socket
  • 19mm Socket
  • 10mm Socket

  • Specialty Tools

  • Ball Joint Press
  • Grease Gun

  • Wrenches - Metric

  • 15mm Wrench
  • 10mm Wrench

4.0 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
2
0
0
1
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Enjoying a smooth ride again!
The parts that I order for my 2007 Trailblazer were an exact fit, and immediately gave my SUV its original smooth ride again without the noise. 1 Auto sales quality and reliable parts at a very competitive price. I will definitely recommend them to my family and friends.
Thank You 1A,
Victor Jackson
September 20, 2017
Purchased
11 months ago
Control Arms did not fit
I ordered this Kit to save money. All the pieces fit perfectly and are working great. The only problem is that the 2 Control Arms that came in the kit did not fit. Initially I thought it was just me not being able to fit the part in, so I struggled with it for a while until I realized it was the wrong size. By then, I had already broke the seal on the one.
August 13, 2017
Purchased
1 year ago
Response from 1A Auto
We are sorry to hear of this experience. Please call us to set up a replacement order or a return for refund.
August 14, 2017
Alex P Staff
First time buyer at 1aauto
Amazingly affordable and all in one kit. Didn't have to look what matches my car just year/make/model
Free fast delivery 2-3 days. I installed my parts on the car fit was just like OEM
I will be back for more parts for sure. Also check out there YouTube videos. !!!!
August 4, 2017
Purchased
1 year ago
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Vehicle Fit

Year Make Model Description
2004-2007Buick Rainier Buick Rainier 6 Piece Set Suspension Kit
2002-2009Chevy Trailblazer Chevy Trailblazer 6 Piece Set Suspension Kit
2002-2006Chevy Trailblazer EXT Chevy Trailblazer EXT 6 Piece Set Suspension Kit
2002-2009GMC Envoy GMC Envoy 6 Piece Set Suspension Kit
2003-2006GMC Envoy XL GMC Envoy XL 6 Piece Set Suspension Kit
2003-2008Isuzu Ascender Isuzu Ascender 6 Piece Set Suspension Kit
2002-2004Oldsmobile Bravada Olds Bravada 6 Piece Set Suspension Kit
2005-2009Saab 9-7X Saab 9-7X 6 Piece Set Suspension Kit

This part replaces:

  • Dorman 520-143
  • Dorman 520-144
  • Hollander 511-01054R
  • Hollander 511-01055L
  • OE # 22157319, 19133670, 8191336700
  • OE # 22157320
  • OE # 15858683
  • OE # 15858682
  • Moog K6663
  • Moog K6664
  • Moog K640293
  • Moog K640294
  • OE # 15858683, 25786775
  • OE # 15858682, 25786774
Part #: 1ASFK02550


Order must be placed by 4pm ET

Get it in: 2 - 4 Business Days

Want it sooner? Choose Next Day Air at Checkout

How-to Video:

(07:51 min)