Delphi TC1620 Suspension Ball Joint - Front Lower

Delphi TC1620 Front Lower Ball Joint

Delphi TC1620 is a standard replacement suspension ball joint for the front lower position on select Chevrolet, GMC, Oldsmobile, and Isuzu applications. It is built with OE-focused materials and dimensional checks to support proper fit on vehicles such as the Chevrolet S10, GMC Sonoma, and Chevrolet Blazer.

Key Features

• Front lower suspension ball joint assembly
• OE-style replacement from Delphi aftermarket steering and suspension engineering
• Ball material: alloy steel SAE 5140
• Housing material: carbon steel SAE 1040
• Dust boot included with chloroprene rubber construction
• Grease fitting, castle nut, cotter pin, nuts, mounting bolts, and mount plate included
• Bolt-on mounting type with tapered stud design
• Standard replacement, non-adjustable design
• Cross-references MOOG Chassis Products K5335 and QuickSteer K5289 for the same application

Detailed Description

Delphi TC1620 is engineered for front lower suspension service where precise joint movement and secure steering geometry matter. Delphi applies OE-level dimensional and material analysis to help ensure the aftermarket part matches the original application, while extreme environmental testing helps verify performance in cold, heat, and salt exposure. This makes it a practical choice for restoring front-end suspension integrity on vehicles including the Chevrolet S10, GMC Jimmy, and Oldsmobile Bravada.

Fits 1984-2004 Chevrolet S10, Front Lower. Fits 1984-1994 Chevrolet S10 Blazer, Front Lower. Fits 1995-2005 Chevrolet Blazer, Front Lower. Fits 1984-1991 GMC S15 Jimmy, Front Lower. Fits 1984-1990 GMC S15, Front Lower. Fits 1991-2004 GMC Sonoma, Front Lower. Fits 1992-2005 GMC Jimmy, Front Lower. Fits 1991-1994 Oldsmobile Bravada, Front Lower. Fits 1996-2001 Oldsmobile Bravada, Front Lower. Fits 1998-2000 Isuzu Hombre, Front Lower.

What It Helps Fix

• Front-end clunking or popping from worn ball joint movement
• Loose steering feel caused by excess suspension play
• Uneven tire wear related to worn lower suspension joints
• Suspension noise over bumps or during turning
• Restoration of proper front lower control arm articulation

Installation Notes and Tips

Verify the front lower position and compare the original joint dimensions, stud taper, and bolt-on mounting pattern before installation. Use the included grease fitting and service the joint according to the vehicle maintenance schedule. Because this part uses a tapered stud and bolt-on mount, proper torque and alignment checks after installation are recommended. Confirm fitment by year, make, model, and position for Chevrolet S10, GMC Sonoma, and related applications before ordering.

Quality Assurance

Delphi tests this suspension ball joint under extreme temperature and salt-spray conditions and uses OE-based material and dimensional analysis to support consistent fit and performance. The TC1620 reflects Delphi’s OE-focused approach to aftermarket steering and suspension components.