Product Details
Made to fit the 2017-2019 BMW 330i 3 Series, the Front Lower Radius Arm Bushing from Whiteline. Whiteline part number: KCA473. The kit contains 2 bushings, 2 tubes, adjusting tool, an install guide, and grease. It is listed for the F30/G20 chassis. Whiteline's note for this fit: Adds +/- 0.5 degrees Caster. Does not Suit xDrive Models. It goes on the front of the vehicle.
Caster is the forward or backward lean of the steering axis, and more positive caster generally helps stability and steering return. This control arm bushing is made to add positive caster and alter anti-dive geometry, using a bushing swap rather than a major rebuild.
Expect a difficult job of about 3 hours. Get the car aligned once it is back on the ground. To go with it on the 330i 3 Series, see Adjustable Rear Sway Bar Link, Rear Subframe Mount Bushing, and Front Sway Bar Link Assembly.
Features
- Grease: Molybdenum disulfide grease comes with it for a longer service life.
- Compliance voids: Voids molded into the bushing allow suspension articulation and soften sharp road inputs.
- Bushing material: Made of polyurethane, which resists deflection better than soft rubber.
- Alignment adjustment: Gives an alignment shop a window of adjustment to set the wheels right.
- Corrosion protection: Plated finish keeps rust off the hardware.
- Caster: Adds caster to improve turn-in and directional stability.
Specifications
| Part Number | KCA473 |
| Part Name | Radius Arm Bushing |
| Vehicle | 2017-2019 BMW 330i 3 Series |
| Chassis Code | F30/G20 |
| Bushing Color | Black |
| Bushing Material | Polyurethane |
| Durometer | 80 |
| Inside Diameter | 12.5 mm |
| Installation Difficulty | Difficult |
| Installation Time (hrs) | 3 |
| Kit Contents | 2 Bushings, 2 Tubes, Adjusting Tool, Install Guide, Grease |
| Length | 89 mm |
| Outside Diameter | 70.7 mm |
| Vehicle Placement | Front |
| Wheel Alignment Required | Yes |
| Notes | Adds +/- 0.5 Degree Caster; Does not Suit xDrive Models |