Delphi TC1622 Suspension Ball Joint - Rear Lower

Delphi Suspension Ball Joint TC1622 Overview

The Delphi Suspension Ball Joint TC1622 is engineered for reliable suspension performance in select Buick, Cadillac, Oldsmobile, and Pontiac models. Designed with durable materials and precise dimensions, this suspension ball joint supports smooth steering and stable handling.

• Ball material constructed from SAE 5140 alloy steel for strength
• Housing made of carbon steel for durability
• Maximum outside diameter of 1.929 inches (49.0 mm)
• Length of 92 mm and width of 49.0 mm
• Gray color finish with chloroprene rubber dust boot included
• Includes castle nut, cotter pin, and mounting hardware
• Threaded tapered stud with 12.0 mm diameter and 1.024 inch thread length
• Press-in mounting type for secure installation
• Standard suspension grade type suitable for OEM replacement

Technical Details and Construction

The Delphi TC1622 suspension ball joint features a ball made from SAE 5140 alloy steel, known for its toughness and wear resistance, paired with a carbon steel housing to withstand suspension stresses. The dust boot is crafted from chloroprene rubber, providing effective protection against dirt and moisture to extend joint life. The stud is tapered and threaded, measuring 12.0 mm in diameter with a taper rate of 0.167 per foot, ensuring a precise fit in compatible suspension assemblies. This assembly includes essential hardware such as a castle nut and cotter pin, facilitating secure fastening and safety.

Compatible Vehicles and Applications

This suspension ball joint TC1622 is compatible with various GM vehicles, including Buick 60 Special, LeSabre, and Park Avenue; Cadillac DeVille, Fleetwood, and Eldorado; Oldsmobile 88 and 98; and Pontiac Bonneville, Fiero, and Commercial Chassis models. It is designed to meet the suspension requirements of these vehicles, providing a direct replacement for worn or damaged ball joints.

Common Suspension Issues Addressed

• Eliminates excessive play or looseness in steering linkage
• Reduces uneven tire wear caused by faulty ball joints
• Restores proper suspension alignment and handling stability
• Prevents clunking noises during turns or over bumps
• Protects suspension components from dirt and moisture ingress

Installation Notes and Tips

The Delphi TC1622 ball joint is a press-in type, requiring appropriate tools for removal and installation. Ensure the mounting surface is clean and free of debris before pressing the new ball joint into place. Use the included castle nut and cotter pin to secure the stud, verifying proper torque specifications according to vehicle service manuals. Note that grease fittings are not included, so no additional lubrication points are necessary during installation.

Quality Assurance and Warranty

Delphi suspension components are manufactured to meet or exceed OEM standards for fit, form, and function. The TC1622 ball joint undergoes rigorous quality control to ensure durability and performance. While specific warranty details may vary, Delphi typically offers coverage against defects in materials and workmanship, providing confidence in the product's reliability for Buick, Cadillac, Oldsmobile, and Pontiac suspension repairs.