Delphi TC1621 Suspension Ball Joint - Front Lower

Delphi Suspension Ball Joint TC1621 Overview

The Delphi Suspension Ball Joint TC1621 is engineered for reliable suspension performance on Chevrolet and GMC trucks and SUVs. Designed to meet standard suspension grade requirements, this ball joint offers durable construction and essential components for a secure fit and smooth operation.

• Constructed with alloy steel SAE 5140 ball and carbon steel housing for strength
• Includes castle nut, cotter pin, washers, and nuts for complete installation
• Greaseable design with grease fitting for maintenance and longevity
• Equipped with a chloroprene rubber dust boot to protect against contaminants
• Press-in mounting type with tapered threaded stud for secure fitment
• Compatible with Chevrolet and GMC models including C20, C2500, C3500, Suburban, and more

Technical Specifications and Features

The TC1621 ball joint features a maximum outside diameter of 2.52 inches (64.0 mm) and a height of approximately 5.354 inches (124.0 mm). The stud thread diameter measures 0.688 inches with a threaded stud length of 1.398 inches. The stud is tapered with a taper per foot of 0.167 and a tapered end diameter of 0.878 inches (22.3 mm), ensuring a precise and secure fit. This assembly includes a dust boot made from durable chloroprene rubber (CR) to resist wear and environmental damage. The ball joint is greaseable, allowing for routine lubrication to extend service life.

Compatible Vehicles and Applications

This Delphi ball joint TC1621 is compatible with a range of Chevrolet and GMC trucks and vans, including:

• Chevrolet C20, C20 Suburban, C30, C2500, C2500 Suburban, C3500
• GMC G30, P20, P30, P2500, P3500, R20, R20 Suburban, R30, R2500, R2500 Suburban, R3500

It is designed for standard suspension systems requiring a press-in ball joint assembly with included hardware for installation.

Common Suspension Issues Addressed

• Eliminates excessive play or looseness in the suspension linkage
• Prevents uneven tire wear caused by worn ball joints
• Reduces clunking noises during steering or over bumps
• Restores proper steering alignment and handling stability
• Protects suspension components from dirt and moisture with included dust boot

Installation Notes and Tips

Installation of the Delphi TC1621 ball joint requires pressing the unit into the control arm. Ensure the tapered stud aligns correctly with the mounting hole. Use the included castle nut, cotter pin, washers, and nuts to secure the assembly. Grease the fitting after installation to maintain lubrication. Verify compatibility with your specific Chevrolet or GMC model before installation to ensure proper fitment.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet OEM standards for durability and performance. The TC1621 ball joint is constructed from high-quality alloy and carbon steel materials and includes protective features such as a grease fitting and dust boot. While specific warranty details may vary, Delphi products typically come with a limited warranty covering defects in materials and workmanship.