Stabilus 4B-8576IN Back Glass Lift Support

Back Glass Lift Support for GM and Buick Applications

The Stabilus 4B-8576IN back glass lift support is a gas-charged lift support built for rear glass applications that need controlled opening and steady holding force. With a 130 N (29 lb) force rating, 18.130 in extended length, and plastic socket connections, it is a direct-fit style replacement for select Chevrolet, GMC, Buick, Pontiac, and Oldsmobile vehicles.

Use this Stabilus 4B-8576IN when servicing rear glass lift support wear on vehicles such as the Chevrolet S10 Blazer and GMC Jimmy without rear defrost. It is also listed for several Buick, Pontiac, Chevrolet, and Oldsmobile models from the late 1970s through the early 1990s.

Key Features

• Brand: Stabilus
• Part number: 4B-8576IN
• Category: Back Glass Lift Support
• Force rating: 130 N / 29 lb
• Extended length: 18.130 in (460.5 mm)
• Compressed length: 10.906 in (277 mm)
• Rod diameter: 0.315 in (8 mm)
• Tube diameter: 0.709 in (18 mm)
• Plastic socket rod, shaft, and tube connections
• Cross-reference: AMS Automotive 4404 and Tuff Support 613065

Detailed Description

The Stabilus 4B-8576IN back glass lift support is engineered for rear glass lift applications where consistent opening assistance and secure support are required. Its 130 N force rating and compact compressed length help it match the geometry of the original support on listed vehicles, while the plastic socket ends simplify OE-style attachment points. This part number is listed for 1983-1994 Chevrolet S10 Blazer and 1983-1994 GMC Jimmy models without rear defrost, along with select Buick Regal, Chevrolet Malibu, Pontiac Bonneville, Buick Century, Pontiac Grand LeMans, Pontiac LeMans, and Oldsmobile Custom Cruiser applications.

For shoppers searching for a rear hatch glass lift support, back window strut, or lift support for Chevrolet S10 Blazer and GMC Jimmy rear glass service, 4B-8576IN provides the fitment and dimensions needed for a direct replacement approach. The Stabilus 4B-8576IN is also referenced under several aftermarket numbers, including AMS Automotive 4404 and Tuff Support 613065.

Common Problems This Part Can Address

• Rear glass that drops instead of staying open
• Weak lift support force when opening the back glass
• Slow or uneven rear window lift action
• Worn gas strut performance on aging hatch glass hardware
• Difficulty holding the rear glass in the open position

Installation Notes and Tips

Verify the vehicle’s rear glass configuration before ordering, especially on 1983-1994 Chevrolet S10 Blazer and 1983-1994 GMC Jimmy models, which are listed without rear defrost. Compare the compressed length, extended length, and socket-style end connections to the original support before installation. Replace supports in a controlled manner so the rear glass remains secured during service.

Quality Assurance

Stabilus is a recognized OE supplier in the lift support category, and this part is built to match the listed application dimensions and force rating for consistent rear glass operation.

Compatible With: 1983-1994 Chevrolet S10 Blazer, 1983-1994 GMC Jimmy, 1982-1983 Buick Regal, 1978-1983 Chevrolet Malibu, 1982-1983 Pontiac Bonneville, 1978-1981 Buick Century, 1980-1981 Pontiac Grand LeMans, 1978-1981 Pontiac LeMans, and 1978-1980 Oldsmobile Custom Cruiser.