Synergy Mfg 4139-L HD Single Plane Tie Rod End LH Thread for 2007-2018 Jeep

Vehicle Fitment

• 2007-2018 Jeep Wrangler JK (All trims, HD steering system)
• 2007-2018 Jeep Wrangler JKU (All trims, HD steering system)

Fitment Notes

• Left-hand thread tie rod end.
• Direct replacement for Synergy HD steering kits - not compatible with OEM factory tie rod ends.
• Used in both tie rod and drag link assemblies depending on steering setup.

Features

• Forged housing with greaseable sintered metal-on-metal bushing design.
• Spring-loaded bearing system maintains tightness as the joint wears.
• Stud made from 4140 steel with induction heat-treated bearing surface for maximum strength.
• Special grease grooves in the ball for maximum lubrication.
• Larger shank diameter than OEM for improved durability.
• Outperforms factory and aftermarket tie rod ends in longevity.
• Engineered for Jeep JK/JKU HD steering upgrades.

Specifications

• Thread size: Left-hand thread, 1-1/4 inch
• Position: Tie rod end (driver/passenger side depending on steering setup)
• Housing material: Forged steel
• Stud material: 4140 steel, induction heat-treated
• Weight: Approx. 2 lb

Included Components

• 1x Synergy Mfg 4139-L HD Single Plane Tie Rod End (LH Thread)

Product Description

The Synergy Mfg 4139-L HD Single Plane Tie Rod End is built for Jeep Wrangler JK/JKU owners who demand stronger, longer-lasting steering components. Featuring a left-hand thread, this tie rod end is a direct replacement for Synergy's HD steering systems and is not compatible with OEM factory ends.

Constructed with a forged steel housing and a greaseable sintered metal-on-metal bushing, the 4139-L ensures maximum durability under heavy loads. Its spring-loaded bearing system maintains tightness as the joint wears, while the 4140 steel stud with induction heat treatment provides superior strength compared to OEM parts.

Ideal for off-road, towing, and heavy-duty applications, the Synergy 4139-L delivers reliable steering performance and longevity, outperforming factory and aftermarket alternatives.