SPL Parts SOLID Series Differential Mount Bushings for Select 2007-2025 Nissan and Infiniti (SPL SDBS Z34)

Fits select 2007-2025 Nissan 370Z, Z, and Infiniti G35, G37, and Q40 models. These SPL Parts SOLID series Differential Mounting Bushings (SDBS) replace compliant factory rubber and silicone-filled bushings to secure the differential housing firmly to the rear subframe.

The OE rear differential bushing is prone to failure under aggressive driving, often leaking its internal silicone fluid—a condition visible as black streaks on the rear subframe. These solid replacements eliminate differential rotation and "bouncing" during hard launches, which significantly reduces wheel hop and improves power transfer to the pavement. By maintaining proper drivetrain alignment, these bushings also help protect the driveshaft and half shafts from shock-load damage.

Engineered and manufactured in the USA, these bushings are precision CNC machined from T6061 billet aluminum for exact tolerances. Because Nissan and Infiniti do not offer these bushings as standalone replacement parts, this kit provides a cost-effective alternative to purchasing an entire new rear subframe assembly.

• CNC machined T6061 billet aluminum construction
• Eliminates differential movement for improved traction and throttle response
• Includes front pumpkin bushings and the rear subframe mount bushing
• Included bushing driver tool facilitates the removal of the factory rear bushing
• Complete kit for one vehicle
• Made in the USA
• Manufacturer Part Number: SPL SDBS Z34