MAS Chassis IS421 Steering Tie Rod End - Front Inner

Steering Tie Rod End Overview

The MAS Chassis IS421 steering tie rod end is a direct replacement for the original equipment part on specific applications. It is built for smooth, safe steering response and consistent front-end control.

Key Features

• Direct replacement steering tie rod end for OE-style service.
• Coated black finish for added surface protection.
• Grease fitting not included for a maintenance-free design.
• Mounting hardware included for installation convenience.
• Fits front inner steering applications on select Ford and Mercury models.

Detailed Description

The MAS Chassis IS421 is engineered as a steering tie rod end replacement for select Ford Explorer and Mercury Mountaineer applications. This part number IS421 matches the original equipment layout for front inner steering service, helping restore precise linkage movement and stable steering feel. The coated finish and black appearance support durability in demanding undercar conditions, while the direct-replacement design simplifies parts selection for the correct application.

Fits 2002-2005 Ford Explorer, front inner. Fits 2002-2005 Mercury Mountaineer, front inner. This part cross-references Delphi TA5300 and Mevotech Supreme MEV421 for the same application.

Common Repair Uses

• Loose or worn steering linkage at the front inner tie rod location.
• Steering play that affects on-center feel and response.
• Uneven tire wear caused by worn steering components.
• Noisy or unstable steering behavior during turning.
• Replacement of a damaged original tie rod end.

Installation Notes and Tips

Verify the vehicle application, steering position, and part number IS421 before installation. After replacement, perform a professional wheel alignment to restore proper steering geometry. Inspect related steering components for wear so the repair addresses the full source of looseness.

Quality Assurance

This steering tie rod end has undergone an industry-level evaluation process to support smooth, safe operation. MAS Chassis supplies steering and chassis components for service replacement applications.