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Redline Select® 1977-2005 Buick / Cadillac / Chevrolet / GMC / Isuzu / Oldsmobile / Pontiac Idler Arm (with 7/16" (12mm) Mounting Holes)

Redline Select® 1977-2005 Buick / Cadillac / Chevrolet / GMC / Isuzu / Oldsmobile / Pontiac Idler Arm (with 7/16" (12mm) Mounting Holes)
$99.99 ea
NEWARRIVING SOONEstimated Ship Date 09/29/2025 (If Ordered Today)
Model: 5015285
Select a Vehicle or refer to the Vehicle Fitment Tab below to verify that this part fits your vehicle.
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Direct-fit idler arm for 1977–2005 Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile and Pontiac vehicles. Designed to support and stabilize the steering linkage, this idler arm replaces worn or damaged units to restore steering geometry, reduce play, and improve handling. Constructed for long-term durability and reliable performance, it’s an essential steering component for restoration, maintenance, or everyday repairs.
Features:
  • Fitment: Direct replacement for select 1977–2005 Buick, Cadillac, Chevrolet, GMC, Isuzu, Oldsmobile and Pontiac models with 7/16" (12mm) mounting holes.
  • Material: Heavy-duty forged steel arm with corrosion-resistant coating for extended service life.
  • Function: Supports the steering linkage and maintains proper steering geometry to reduce play and wandering.
  • Durability: Reinforced bushing and precision-machined pivot for reliable, long-lasting operation.
  • Ease of Use: Direct bolt-on design for straightforward replacement with common hand tools.
  • Application: Ideal for restoration projects and routine steering system repairs or upgrades.
Installation / Application:
  • Difficulty: 2/5
  • Estimated time: 45 minutes - 1.5 hours
Suggested Tools:
  • Floor jack and jack stands
  • Wheel chocks
  • Socket set and ratchet (including 7/16"/12mm sockets as needed)
  • Combination wrenches
  • Torque wrench
  • Pitman/Idler arm puller or ball joint separator
  • Pry bar
  • Hammer
  • Penetrating oil
  • Shop rags
Instructions:
  1. Park on level ground, set the parking brake, and chock the rear wheels.
  2. Loosen the front wheel lug nuts slightly, lift the vehicle with a floor jack, and support securely on jack stands. Remove the front wheel to access the steering linkage.
  3. Locate the idler arm and spray mounting bolts and pivot connections with penetrating oil to ease removal.
  4. Remove any cotter pins or retaining hardware from the stud end, then use a pitman/idler arm puller or ball joint separator to separate the idler arm from the steering linkage.
  5. Support the steering linkage as needed and unbolt the idler arm mounting bolts (7/16"/12mm mounting holes). Carefully remove the old idler arm from the frame.
  6. Compare the new idler arm to the old unit to confirm correct orientation and hole alignment.
  7. Position the new idler arm and hand-start the mounting bolts. Tighten to the manufacturer's specified torque using a torque wrench.
  8. Reconnect the steering linkage to the idler arm stud, install new cotter pins or locking hardware if required, and tighten to spec.
  9. Reinstall the wheel, lower the vehicle, torque the lug nuts to specification, and perform a visual check for proper installation.
  10. Test-drive at low speed and check steering for play or unusual noises. Have a professional alignment performed if needed to ensure correct steering geometry.
About Redline Select

Redline Restomotive® has established itself as a premier brand in the world of classic car restoration, providing enthusiasts with high-quality parts that meet the exacting standards of original manufacturer specifications. Dedicated to the preservation of American automotive history, Redline Restomotive® combines advanced manufacturing techniques with an in-depth understanding of vintage vehicles. The result is a range of products that seamlessly blend into the design and function of classic cars, giving restorers and collectors the assurance that each part reflects the era’s style, quality, and performance.

Redline Select®  is our premium line of steering and suspension products for all vehicle makes and models including both North American and Import vehicles.  We have partnered with an ISO 9001/QS9000/TS16949 certified manufacturing facility with more than 40 years of experience in producing components that perform to the standards our customers expect.  Our steering and suspension parts are backed by multiple quality control checks along the way—during production, prior to shipping from the factory, and at arrival. With our ISO 9001:2015 certification, we observe the world’s highest standards for quality management.  

Vehicle Fitment:

The Vehicle Fitment Guide is to be used as a general reference. The data has been provided by our suppliers and manufacturers and may contain errors or incorrect data. Always refer to a professional to verify correct fitment for your vehicle.
Make Model Submodel Years
Buick Century 1978 - 1981
Buick Commercial Chassis 1991 - 1996
Buick Electra 1977 - 1989
Buick Estate Wagon 1980 - 1983
Buick LeSabre Estate Wagon 1988 - 1990
Buick LeSabre 1977 - 1985
Buick Regal 1978 - 1987
Buick Riviera 1977 - 1978
Buick Roadmaster 1991 - 1996
Cadillac Brougham 1987 - 1992
Cadillac Commercial Chassis 1992 - 1996
Cadillac DeVille 1977 - 1984
Cadillac Fleetwood 1977 - 1996
Chevrolet Bel Air 1981
Chevrolet Blazer 1995 - 2005
Chevrolet Caprice 1977 - 1996
Chevrolet El Camino 1978 - 1987
Chevrolet Impala 1977 - 1996
Chevrolet LLV 1987 - 1995
Chevrolet Malibu 1978 - 1983
Chevrolet Monte Carlo 1978 - 1988
Chevrolet S10 Blazer 1983 - 1994
Chevrolet S10 1982 - 2003
GMC Caballero 1978 - 1987
GMC Jimmy 1992 - 2004
GMC S15 Jimmy 1983 - 1991
GMC S15 1982 - 1990
GMC Sonoma 1991 - 2003
Isuzu Hombre 1996 - 2000
Oldsmobile 98 1977 - 1984
Oldsmobile Custom Cruiser 1977 - 1992
Oldsmobile Cutlass Calais 1978 - 1984
Oldsmobile Cutlass Cruiser 1980 - 1983
Oldsmobile Cutlass Salon 1978 - 1987
Oldsmobile Cutlass Supreme 1978 - 1988
Oldsmobile Cutlass 1978 - 1987
Oldsmobile Delta 88 1977 - 1985
Pontiac Bonneville 1977 - 1986
Pontiac Catalina 1977 - 1981
Pontiac Grand Am 1978 - 1980
Pontiac Grand Prix 1978 - 1987
Pontiac Grand Safari 1977 - 1978
Pontiac Laurentian 1978 - 1981
Pontiac LeMans 1978 - 1981
Pontiac Parisienne 1983 - 1986
Pontiac Safari 1987 - 1989

Specifications:

Aftermarket Reference K6187T, FA1013, MK6187T, IA6187, 1017134, 101-7134, 531253, 531-253, 620.66034, 4501082
Boot Material CR
Center to Center Length (mm) 157
End Type 1 Taper Hole
End Type 2 Bracket
Grease Port Yes
Housing Finish Mag Phos / E-Coat
Idler Arm Bushing (Y/N) N
Includes Grease Fitting/s Yes
Mounting Bkt. Holes Center to Center (mm) 61
Mounting Bkt. Holes ID (mm) 12
OE Reference 26041013, 8260410130
Proposition 65 WARNING: This product may contain chemicals known to the state of California to cause cancer, birth defects, or other reproductive harm.

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Redline Select® 1977-2005 Buick / Cadillac / Chevrolet / GMC / Isuzu / Oldsmobile / Pontiac Idler Arm (with 7/16" (12mm) Mounting Holes):