ACDelco 46C1005A Steering Idler Arm

Part Number
Steering Linkage Idler Arm

Fits: 64 Buick Skylark, 64 Buick Special, 64 Buick Sportwagon, 64 Chevrolet Chevelle, 64 Chevrolet El Camino, 64 Chevrolet Malibu, 64-72 Oldsmobile Cutlass, 64-72 Oldsmobile F85, 64-72 Oldsmobile Vista Cruiser, 64-70 Pontiac GTO, 64-72 Pontiac LeMans, 64-70 Pontiac Tempest, 65-71 Oldsmobile 442, 72 Pontiac GTO, 68-72 Buick Skylark, 68-69 Buick Special, 68-71 Buick Sportwagon, 68-72 Chevrolet Chevelle, 68-72 Chevrolet El Camino, 67-72 Oldsmobile Cutlass Supreme, 68-69 Buick GS 350, 68-69 Buick GS 400, 69-72 Pontiac Grand Prix, 70-72 Buick GS, 70-72 Buick GS 455, 70-72 Chevrolet Monte Carlo, 71-72 GMC Sprint

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ACDelco Advantage Steering Idler Arms serve as pivot points for the steering linkage assemblies in your vehicle, are economical replacement components for your GM and non-GM vehicle. These arms attach on the opposite side of the center link from the pitman arm and to the vehicle frame, supporting the center link. These dependable aftermarket steering idler arms offer quality and performance, all at an economical price. ? WARNING: Cancer and Reproductive Harm -



  • Bearing design reduces endplay
  • Buick;Chevrolet;GMC;Oldsmobile;Pontiac
  • Coated for corrosion resistance
  • Forged arm for enhanced strength
  • Greaseable design for long life
  • Manufactured at ISO 9001-certified facilities to ensure consistent high quality
  • Studs use cold-formed manufacturing to maintain very close tolerances
  • Undergo extreme impact, wear, and fatigue testing to help ensure quality and durability


Arm Attachment TypeBracket
Bracket Hole Quantity2
Castle Nut IncludedNo
FAQ - Answer 1Yes. ACDelco Advantage Chassis parts are for both GM and non-GM vehicle applications.
FAQ - Answer 2Yes. Your idler and pitman arms are exposed to similar wear conditions, so it is recommended that you replace them at the same time.
FAQ - Answer 3Yes. Installing a new idler or pitman arm can interfere with your vehicle's alignment, so performing an alignment after steering arm installation is recommended.
FAQ - Question 1Can I use ACDelco Advantage Chassis parts on my non-GM vehicle?
FAQ - Question 2Should I replace my idler and pitman arms at the same time?
FAQ - Question 3Should I perform a vehicle alignment after installing new idler or pitman arms?
Good Maintenance Practices - Section 1 - Bullet 1Inspect or have your idler and pitman arms inspected for signs of wear. Exposure to dirt, road salt, and other harsh road conditions can cause wear and tear on your steering arms or cause connections to loosen. One way to test your steering arm assemblies is to try to turn the steering wheel while your vehicle is parked. If you can turn the steering wheel a significant amount without resistance, then you may have a worn idler or pitman arm.
Good Maintenance Practices - Section 1 - Bullet 2Replace your vehicle's idler and pitman arms at the same time. Since the idler arm and pitman arm are exposed to similar wear conditions you should replace the steering arms at the same time. After your new arms are installed have a professional alignment done.
Grease Fitting IncludedYes
Height (in)2.9
Meets or Exceeds Original Equipment Manufacture SpecificationsYes
Programming RequiredNo
ShapeL Shaped
Signs of Wear & Troubleshooting - Section 1 - Bullet 1Steering difficulty: loss of steering responsiveness, wandering steering while driving at speed, or a shimmy in the front end of your vehicle may indicate worn steering arms.
Signs of Wear & Troubleshooting - Section 1 - Bullet 2Unexpected noises: clunking noises while turning the steering wheel may signal steering arm wear.
Signs of Wear & Troubleshooting - Section 1 - Bullet 3Uneven tire wear: worn steering arms may result in uneven tire wear.
Signs of Wear & Troubleshooting - Section 1 - Bullet 4Excessive steering play: excessive movement or play in your vehicle's steering linkage may be a sign of steering arm wear.
Signs of Wear & Troubleshooting - Section 1 - Bullet 5Alignment issues: an inability to set the proper alignment for your vehicle may indicate worn steering arms.
Weight (lb)2.5
Width (in)8.5



  • 1970-1972 Chevrolet Monte Carlo - Position: N/A
  • 1969-1972 Pontiac Grand Prix - Position: N/A
  • 1970-1972 Buick GS - Position: N/A
  • 1968-1969 Buick GS 350 - Position: N/A
  • 1968-1969 Buick Special - Position: N/A
  • 1964-1970 Pontiac Tempest - Position: N/A
  • 1964-1972 Oldsmobile Cutlass - Position: N/A
  • 1964-1964 Chevrolet Malibu - Position: N/A
  • 1970-1972 Buick GS 455 - Position: N/A
  • 1967-1972 Oldsmobile Cutlass Supreme - Position: N/A
  • 1964-1964 Buick Sportwagon - Position: N/A
  • 1968-1972 Buick Skylark - Position: N/A
  • 1964-1970 Pontiac GTO - Position: N/A
  • 1964-1964 Buick Special - Position: N/A
  • 1964-1972 Oldsmobile Vista Cruiser - Position: N/A
  • 1968-1971 Buick Sportwagon - Position: N/A
  • 1964-1964 Chevrolet El Camino - Position: N/A
  • 1971-1972 GMC Sprint - Position: N/A
  • 1965-1971 Oldsmobile 442 - Position: N/A
  • 1964-1964 Buick Skylark - Position: N/A
  • 1964-1964 Chevrolet Chevelle - Position: N/A
  • 1972-1972 Pontiac GTO - Position: N/A
  • 1964-1972 Oldsmobile F85 - Position: N/A
  • 1968-1972 Chevrolet Chevelle - Position: N/A
  • 1968-1972 Chevrolet El Camino - Position: N/A
  • 1964-1972 Pontiac LeMans - Position: N/A
  • 1968-1969 Buick GS 400 - Position: N/A
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