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AFCO 20039LF Low Friction GM Lower Ball Joint

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10 degree
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AFCO 20039LF Low Friction GM Lower Ball Joint

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What's in the Box


AFCO Low Friction Ball Joints are designed with 2 ft. lbs. of resistance, the force required to move the stud of the ball joint.  Compare this with standard replacement joints, with as high as 50 ft. lbs. of resistance.  A difference you can feel!

It is critical to handling that suspension components be as free as possible to move.  Low friction ball joints allow the suspension to give rather than allowing the tire to bounce over rough surfaces.  Low tire pressures magnify the need to minimize friction in the suspension.

Checking Ball Joint Wear (PDF)

See Application tab for corresponding vehicle models.  

Item Details

Moog # K6145


  • 1982-2002 Chevrolet S-10/Blazer (2WD)
  • 1982-2002 GMC Sonoma/Jimmy (2WD)
  • 1970-81 Chevrolet Camaro
  • 1970-81 Pontiac Firebird

1971-1976 GM B-Body

  • Chevrolet Impala
  • Chevrolet Caprice
  • Chevrolet Bel Air
  • Buick LeSabre
  • Buick Centurion
  • Oldsmobile Delta 88
  • Oldsmobile Delta 98
  • Oldsmobile Custom Cruiser
  • Pontiac Bonneville

1973-77 GM A-Body  

  • Buick (Century, Regal)
  • Chevy (Chevelle, Malibu, Monte Carlo, El Camino)
  • GMC (Sprint)
  • Oldsmobile (Cutlass, 442, Hurst Olds)
  • Pontiac (Grand Prix, LeMans)

1978-81 GM A-Body 

  • Buick (Century)
  • Chevy (Malibu)
  • Pontiac (LeMans thru '82)

1977-1996 GM B-Body

  • Chevrolet Impala (All, including SS)
  • Chevrolet Caprice (All)
  • Buick Electra ('85-'90)
  • Buick Estate Wagon ('85-'96)
  • Buick LeSabre ('87-'90)
  • Buick Roadmaster ('94-'96)
  • Oldsmobile Delta 88 ('77-'85)
  • Oldsmobile Delta 98 ('77-'84)
  • Oldsmobile Custom Cruiser ('77-'92)
  • Pontiac Bonneville/Catalina/Grandville ('77-'86)
  • Pontiac Safari ('87-'89)
  • Pontiac Parisienne ('83-'86)

1975-1979 GM X-Body

  • Chevrolet Nova
  • Buick Apollo (thru '75)
  • Oldsmobile Omega
  • Pontiac Ventura (thru '77)
  • Pontiac Phoenix 
1978-87 GM G-Body
  • Buick (Regal, Grand National, GNX)
  • GMC (Caballero)
  • Oldsmobile (Cutlass, Hurst Olds)
  • Pontiac (Grand Prix)
1978-88 GM G-Body
  • Chevy (Monte Carlo, El Camino)



  • Precision machined to tight tolerances, providing consistent resistance throughout the travel of the ball joint to deliver consistent performance
  • Improves weight transfer
  • Frees up suspension for more consistent, repeatable chassis tuning
  • Removes suspension rigidity and allows shock and spring to have more precise wheel control
  • Adjustments are controlled more effectively by the shock and spring instead of the tire which improves traction
  • Provides more accurate set-ups during vehicle scaling
  • Meets or exceeds standard ball joint strength
  • Stock appearing
  • Lower input steering efforts and faster steering wheel return


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