AST PSB 630 Rear Differential Carrier Bushing

The AST PSB 630 is a premium polyurethane rear differential carrier bushing engineered to replace the factory rubber bushing in BMW applications. This bushing presses into the rear subframe at the rear of the differential, providing superior durability and enhanced suspension performance over the original equipment bushing.

Key Features:

• Constructed from high-grade polyurethane material for increased strength and longevity
• Designed to solve inherent problems with factory rubber bushings
• Features freely rotating internal sleeves that enhance bushing lifespan
• Quick and easy installation, typically taking 1-5 minutes once old bushing is removed
• Backed by a lifetime warranty for peace of mind
• One bushing required per vehicle

Polyurethane bushings offer significant advantages over standard rubber components. They are engineered to withstand the stresses of modern vehicle suspensions, providing improved handling characteristics and preventing premature wear of related suspension components. The AST PSB 630 delivers a cost-effective solution that lasts for the life of the vehicle while maintaining easy replaceability.

OEM Cross-Reference: BMW Part # 33 17 6 751 808