SPL Parts machines these differential mount bushings from 6061-T6 billet aluminum to replace the factory silicone filled rubber mounts, which are known to tear and weep under hard use. Going solid stops the differential moving under load, which cuts wheel hop, sharpens throttle response on corner exit and reduces the shock loads that break driveshafts and half shafts. The kit covers the bushings at the front of the differential pumpkin and the bushing in the subframe where the rear of the differential mounts, and it ships with a bushing driver tool for pressing the stock bushing out of the subframe. Made in the USA.
Specifications
| Type | Solid differential mount bushing kit |
| Position | Rear (differential to subframe mounts) |
| Material | 6061-T6 billet aluminum, CNC machined |
| Replaces | Factory silicone filled rubber differential mounts |
| Included | Front pumpkin bushings, rear subframe bushing, bushing driver install tool |
| Origin | Made in the USA |
| Part Number | SPL SDBS Z33 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2003-2007 | INFINITI | G35 | Base |
| 2007 | INFINITI | G35 | Sport |
| 2004-2006 | INFINITI | G35 | X |
| 2005 | Nissan | 350Z | 35th Anniversary Edition |
| 2003-2008 | Nissan | 350Z | Base |
| 2003-2009 | Nissan | 350Z | Enthusiast |
| 2005-2009 | Nissan | 350Z | Grand Touring |
| 2007-2008 | Nissan | 350Z | Nismo |
| 2003-2005 | Nissan | 350Z | Performance |
| 2003-2009 | Nissan | 350Z | Touring |
| 2003-2006 | Nissan | 350Z | Track |
Shipping
- In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Backordered items ship as soon as stock lands — contact us for lead times.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30-day returns on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
- Installed or used parts can’t be returned — confirm fitment before you install.
- Special orders and custom items are final sale.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Refund Policy
