Vehicle Fitment

  • 2014–2024 Ram 2500 (4WD, All Trims with Synergy HD Steering)
  • 2013–2024 Ram 3500 (4WD, All Trims with Synergy HD Steering)

Fitment Notes

  • For use with Synergy Heavy Duty Steering Systems ONLY (Part #8702-01 Tie Rod)
  • NOT compatible with OEM/factory steering components
  • Used on BOTH driver side and passenger side of the Synergy HD Tie Rod
  • Requires Synergy 4134-02 Low Misalignment Dust Boots (sold separately)
  • Synergy High Performance Grease (Part #4119) recommended for maintenance
  • If cotter pin does not engage castle nut upon install, a washer may be required depending on knuckle casting differences

Features

  • Precision-engineered metal-on-metal design with sintered bushings for maximum durability
  • Fully greaseable with precision grease grooves in ball bearing for extended service life
  • Spring-loaded bearing design maintains joint tightness as components wear
  • Larger-than-stock shank with no stress riser eliminates weak point at base
  • Forged 1018 steel housing provides superior impact resistance
  • Induction heat-treated ball bearing for smooth operation and maximum longevity
  • Eliminates nylon ball race for increased strength and durability
  • Heavy-duty nitrile-butadiene rubber (NBR) boot compatible with retaining springs
  • Outperforms all OEM and aftermarket alternatives in extreme off-road conditions
  • Made in USA by Synergy Manufacturing

Specifications

  • Part Number: 4138-L
  • Thread Size: 1-1/4"-12 Left Hand UNF
  • Taper: 1:6 (9.52° Included Angle)
  • Stud Material: 4140 Steel
  • Housing Material: Forged 1018 Steel
  • Finish: Matte Black
  • Position: Driver Side / Passenger Side (Tie Rod)
  • Weight: 3 lbs
  • Zerk Fitting: DynaFlow 1/4"-28

Included Components

  • 1x Synergy Heavy Duty Metal-on-Metal Tie Rod End
  • 1x DynaFlow 1/4"-28 Zerk Fitting
  • 1x Castle Nut
  • 1x Cotter Pin

Product Description

The Synergy 4138-L is a heavy-duty replacement tie rod end designed exclusively for Synergy HD Steering systems on 2014–2024 Ram 2500 and 2013–2024 Ram 3500 4x4 trucks. Featuring a metal-on-metal sintered bushing design with precision grease grooves, the 4138-L delivers superior wear resistance and longevity compared to nylon-bushed alternatives. The 4140 steel stud with oversized 1-1/4" shank eliminates stress risers, while the forged housing and spring-loaded bearing maintain tight tolerances throughout the component's service life. Two units are required per Synergy HD Tie Rod (Part #8702-01)--one driver side, one passenger side. Not compatible with OEM steering.



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