Whiteline built the Front Lower Inner Rear Control Arm Bushing Kit – Double Offset for the 2004-2012 Volvo S40. Whiteline”s note for this fit: Adds .5 degrees caster anti-lift. It is listed for the P1 chassis. Whiteline part number: KCA428. Placement: front. The kit contains 2 housings, 2 bushings, 4 bolts, 2 spacers, 10 washers, and 2 screws.
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. Plan on a wheel alignment afterward. To go with it on the Volvo S40, see Adjustable Rear Sway Bar Link, Adjustable Rear Upper Control Arm Set, and Adjustable Front Sway Bar Link.
Features
Specifications
| Part Number | KCA428 |
| Part Name | Control Arm Bushings |
| Vehicle | 2004-2012 Volvo S40 |
| Chassis Code | P1 |
| Bushing 1 Inner Diameter | 21.5 mm |
| Bushing 1 Length | 51 mm |
| Bushing 1 Outer Diameter | 32 mm |
| Bushing 2 Inner Diameter | 32.3 mm |
| Bushing 2 Length | 80.5 mm |
| Bushing 2 Outer Diameter | 65.3 mm |
| Bushing Quantity | 2 |
| Grade Type | Performance |
| Installation Difficulty | Difficult |
| Installation Time (hrs) | 3 |
| Kit Contents | 2 Housings, 2 Bushings, 4 Bolts, 2 Spacers, 10 Washers, 2 Screws |
| Material | Polyurethane |
| Mounting Hardware Included | Yes |
| Outside Diameter | 32 mm |
| Vehicle Placement | Front |
| Wheel Alignment Required | Yes |
| Notes | Adds .5deg caster anti-lift |


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