Product Details
Here are the Whiteline Rear Differential Bushings - Mount In Cradle Inserts for the 2007-2019 Subaru Legacy. Whiteline's note for this fit: Inserts: installs into voiding of original bushings, positive diff retention. It goes on the rear of the vehicle. The part number is KDT903. In the box: 4 insert bushings, 2 washers, an install guide, and grease. Chassis code: BM/BR/BS.
Differential bushings take the torque reaction every time the car accelerates. When the rubber is worn or soft, the case shifts and the driveline jerks, and wheel hop becomes more likely. Stiffer bushings or inserts limit that movement. Polyurethane resists deflection far better than the soft rubber it replaces. This version is an insert design, made to fit into the voids of the original bushing instead of replacing the whole mount.
Installation is rated moderate, with about 1.5 hours of work listed. A wheel alignment is not required. Working on the same car? We also list Adjustable Rear Sway Bar Link, 14mm Adjustable Front Camber Bolts, and Adjustable Sway Bar Vehicle Link Kit for the Legacy.
Features
- Bushing compound: A synthetic elastomer compound resists oil, grease, ozone, and weathering.
- Insert design: Designed to be used with the factory bushing left in place.
- Bushing material: Polyurethane bushings flex far less than rubber ones.
- Install guide: Whiteline packs an install guide with it.
- Bonded design: A bonded design adds strength for high load applications.
- Self-lubricating: Internal grease reservoirs keep the bushing lubricated as it works.
Specifications
| Part Number | KDT903 |
| Part Name | Differential Bushings |
| Vehicle | 2007-2019 Subaru Legacy 2.5i Limited, 2.5i Special Edition |
| Chassis Code | BM/BR/BS |
| Bushing Color | Black |
| Bushing Material | Polyurethane |
| Color | Black |
| Durometer | 85 |
| Installation Difficulty | Moderate |
| Installation Time (hrs) | 1.5 |
| Kit Contents | 4 Insert Bushings, 2 Washers, Install Guide, Grease |
| Material | Polyurethane |
| Mounting Hardware Included | No |
| Universal or Specific Fit | Specific Fit |
| Vehicle Placement | Rear |
| Wheel Alignment Required | No |
| Notes | Inserts - installs into voiding of original bushings - positive diff retention |



