Moog K8739T Steering Idler Arm

Brand Moog K8739T
Length 138.0
Length 5.433
Pre-Greased Yes
Castle Nut Included Yes
Grease Fitting Included Yes
Mounting Hole Diameter 2.500
Mounting Hole Diameter 63.5
Fits Ford and Lincoln · 25 vehicles

Cross-references Mevotech Supreme MK8739T, MOOG Chassis Products K8739T and 1L3Z3350AA for the same application. See all 22.

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Steering Idler Arm Overview

The MOOG K8739T steering idler arm is a direct-fit chassis replacement for select Ford and Lincoln trucks and SUVs. It is built with service-friendly features that support smoother maintenance and dependable steering linkage operation.

Key Features

  • Pre-greased design for easier initial service.
  • Includes a grease fitting for routine lubrication.
  • Castle nut included for a complete steering-side installation.
  • 2.500 in. mounting hole diameter for confirmed fitment applications.
  • MOOG K8739T is part of the brand’s Problem Solver chassis line.

Detailed Description

MOOG K8739T is a steering idler arm engineered for vehicles that use a 2-1/2 in. between-mount-holes specification. Confirmed applications include 1997-2004 Ford F-150, 2004 Ford F-150 Heritage, 1997-2002 Ford Expedition, 2002 Lincoln Blackwood, 1998-2002 Lincoln Navigator, and 1997-1999 Ford F-250. This part cross-references Mevotech Supreme MK8739T for the same application.

As a steering linkage component, the idler arm helps maintain proper support on the passenger-side steering system geometry used in these Ford and Lincoln platforms. The pre-greased construction and included grease fitting are intended to simplify routine lubrication, while the supplied castle nut supports replacement work on the steering assembly. The MOOG K8739T part number is also used when searching for a steering idler arm for Ford F-150 and related applications.

What It Is Used For

  • Restoring steering linkage support when the original idler arm is worn.
  • Addressing looseness or play in the steering system.
  • Replacing a damaged greaseable steering support component.
  • Correcting steering response issues caused by worn pivot surfaces.
  • Servicing Ford F-150, Expedition, Navigator, Blackwood, and F-250 steering systems.

Installation Notes and Tips

Verify the 2-1/2 in. mounting-hole spacing before installation. Match the application to the confirmed vehicle listing and inspect adjacent steering linkage parts for wear during replacement. Use the grease fitting during service intervals to maintain lubrication.

Quality Assurance

MOOG is known for chassis components that incorporate design improvements aimed at extending service life and simplifying replacement. K8739T follows that product approach for steering linkage service on confirmed Ford and Lincoln applications.

This part fits 25 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2004FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2004FordF-150 HeritageN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2003FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2002FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2002FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2002LincolnBlackwoodN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2002LincolnNavigatorN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2001FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2001FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2001LincolnNavigatorN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2000FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2000FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
2000LincolnNavigatorN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1999FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1999FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1999FordF-250N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1999LincolnNavigatorN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1998FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1998FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1998FordF-250N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1998LincolnNavigatorN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1997FordExpeditionN/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1997FordF-150N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1997FordF-2504.6LV8N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
1997FordF-2505.4LV8N/Awith 2-1/2 (in) Between Mount Holes; Includes Powdered-Metal Gusher Bearing To Allow Grease To Penetrate Bearing Surfaces
Directly replaces or cross-references 22 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Mevotech Supreme — MK8739TMOOG Chassis Products — K8739T1L3Z3350AA1L3Z3350AB09-8500145C110746C1107A268-3700450-1107450-1107B536-561620.6500319014998500162165003F65Z3350AAF75Z-3350ABF85Z-3350AAFA5034IA8739JIA7001XK8739T