Whiteline Performance Rear Axle Differential Mount - Bushing Kit KDT911 - 350Z / 370Z
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Whiteline Performance Rear Axle Differential Mount - Bushing Kit - 350Z / 370Z
KDT911
A worn or soft differential mount allows the diff to shift under power and braking, killing pinion angle consistency, introducing driveline vibration, and sapping power before it reaches the wheels. The Whiteline KDT911 replaces the entire differential mount bushing set with purpose-engineered synthetic elastomer and polyurethane bushings that lock the diff firmly in place and keep it there.
A correctly mounted differential maintains consistent pinion angles under load, reducing torque loss, improving power delivery, and giving the rear end a more controlled, planted feel under acceleration.
Engineered specifically for the rear differential mount on the 350Z, 370Z, and the full Z/Skyline/Stagea family, this complete kit replaces all five bushings across the three mounting positions. The result is sharper throttle response, cleaner power transfer, and a more predictable rear end, particularly noticeable when accelerating hard out of corners.
Bush specifications
| Type | Qty | OD (A) | ID (B) | Length (C) | Description |
|---|---|---|---|---|---|
| Type 7 | 1x | 75.4 mm | 32 mm | 50 mm | Pin bush — centre mount |
| Type 1 | 2x | 50 mm | 21.9 mm | 34 mm | Shackle bushing — front mounts |
| Type 1 | 2x | 50 mm | 21.9 mm | 24.1 mm | Shackle bushing — rear mounts |
Tubes: 22.2 x 12.6 x 60mm (2x, shared across bushing types)
Kit contents
Centre mount bushing
1x · Type 7 pin bush, 75.4mm OD
Front mount bushings
2x · Type 1 shackle, 34mm length
Rear mount bushings
2x · Type 1 shackle, 24.1mm length
Tubes
2x · 22.2 x 12.6 x 60mm
LM grease
Molybdenum disulphide — included
Installation guide
Included
What it does for your car
- Maintains consistent differential pinion angles under acceleration, braking, and cornering
- Reduces initial torque loss, more power reaches the wheels from the moment you accelerate
- Eliminates diff movement under load, sharper, more immediate throttle response
- Reduces driveline vibration and NVH caused by a floating differential mount
- More planted, predictable rear-end behaviour under hard acceleration out of corners
- Superior resistance to oil, grease, ozone, and weathering vs OEM rubber
- Internal grease reservoirs for continual self-lubrication, quiet and maintenance-free
- Protective powder coating and plated metal components, built to resist corrosion
Installation
Estimated time
~4 hours
Difficulty
Trade specialist
Professional installation strongly recommended. This kit is rated Trade Specialist by Whiteline — it involves removing the differential and working with multiple bushing types and press tooling. Whiteline recommends using the WTK001 Press In/Out Kit (M12 threaded rod) for bushing removal and installation. Not a suitable DIY job without a hoist, press, and specialist experience.
Fitment
• Nissan 350Z Z33 · 2003–2009 (all variants)
• Nissan 370Z Z34 · 2009–2020 (all variants)
• Nissan Z RZ34 · 2022+
• Infiniti G35 · 2002–2007
• Infiniti G37 · 2008–2013
• Nissan Skyline V35 · 2001–2007
• Nissan Skyline V36 · 2006–2015
Best done alongside a full rear suspension refresh — once the diff is out, it's the ideal time to address trailing arm and control arm bushings at the same time. Pair with the Whiteline trailing arm bushing kits (W62985, W62998) and rear control arm range for a complete rear end rebuild.
