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The large stock rubber fluid filled bushing in the rear subframe of 350Z, G35, 370Z, & G37 models is prone to failure. It is common to see evidence of the silicone fluid leaking out of the busted bushing characterized by black stains on the subframe below the bushing. The stock rear bushing is soft to isolate drivetrain vibrations, however performance is compromised especially after the bushing fails resulting in excessive differential movement reducing torque transfer and eventually causing a thud or knocking noise between shifts. The stock rear bushing is part of the rear subframe assembly and not available for purchase separately.
In addition to the rear bushing, there are smaller bushings in the front mount ears of the differential to secure it to the subframe assembly. The front bushings are not as prone to failure but can wear out due to excessive play after failure of the rear bushing. When these bushings wear out, the differential twists under load which can result in wheel hop, increased chassis vibration, damage to the rear differential cover, and excessive axle wear.
After several years of research, installing and comparing other solutions on the market, Z1 is now proud to offer a couple replacement solutions for rear differential bushings that we believe deliver the best in fitment and performance. Our aluminum differential bushing kit is intended for the hardcore enthusiast who is willing to compromise some drivetrain noise and vibration for maximum performance and the ultimate in torque transfer and control. We also offer Z1 Urethane Rear differential Bushings.
Z1 Motorsports differential bushings aren't just a repair item, they're an essential upgrade for enthusiasts from daily drivers to the weekend track warrior. Z1 bushings are engineered to provide the user with a product that fits like OEM at a fraction of the price while maintaining the highest level of performance. The end result is a car that is more pleasurable to drive with precise shifts and predictable control.
For installation assistance, choose to add the minimalist installation tool as an option below. Additionally, Z1 recommends the use of our differential bushing removal tool found HERE and available through the options below.
*** This item does not qualify for any additional discounts or promotions ***