Delphi Steering Idler Arm P/N:TL478
Keep your steering linkage supported and pivoting smoothly with the Delphi TL509, a 1986-1994 Nissan D21 idler arm that is also a direct-fit replacement for the 1987-1996 Nissan Pathfinder and 1995-1997 Nissan Pickup. This steering idler arm supports one end of the steering center link and pivots with it as the wheels turn, helping hold the linkage in position.
Delphi's OE safety technology is fitted to millions of vehicles worldwide, and the company applies that OE expertise to its aftermarket steering range. Its dimensional and material analysis is aimed at close compatibility between the original part and this replacement.
Signs an idler arm may need replacing include loose or wandering steering, extra play at the steering wheel, clunks from the steering linkage and uneven tire wear. These symptoms can have other causes, so diagnose the steering system before replacing parts. See the "Vehicles it fits" section for the full list of applications.
Interchange: 101-4044 · 48530-31G25
IA9500 · IA9500PR · K9500 · GK9500 · MK9500 · JIA139 · 1014044 · 4853031G25
This part cross-references / interchanges with the following part numbers:
What does an idler arm do?
It supports one end of the steering center link and pivots as the wheels turn, helping hold the steering linkage in position.
Does the Delphi TL509 fit the 1987-1996 Nissan Pathfinder?
Yes, it is a direct-fit replacement for the 1987-1996 Nissan Pathfinder. Check the "Vehicles it fits" section to confirm it matches your vehicle.
What signs suggest an idler arm may need replacing?
Loose or wandering steering, extra play at the wheel, clunks from the linkage and uneven tire wear may be signs of a worn idler arm, though other steering parts can cause them too.
How does Delphi test this idler arm?
Delphi fatigue tests its idler arms and exposes its steering parts to temperatures below -40°C and above 120°C, plus 720 hours of salt spray.
Should the alignment be checked after installation?
Replacing a steering linkage part can affect wheel alignment, so having it checked afterward is good practice. Follow the vehicle service information for the installation procedure and torque values.
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