These differentials are gear type but have enhancements to prevent a loss of traction that can happen if one drive wheel is unloaded with a typical gear type (Torsen, True-Trac, Quaife) differential. These are compatible with the FWD M66 transmission. This is found in all 6 speed manual FWD Volvos.
• Innovative: Patented Wavetrac® design automatically improves grip in low traction conditions. This feature is truly innovative and unlike any other torque biasing diff design.
• Superior Materials: 9310 steel gears run in case-hardened billet or forged steel bodies. ARP® fasteners used throughout.
• Maintenance Free: As supplied new, the Wavetrac® differential will perform a lifetime of service without maintenance or rebuilds.
• Customizable: If desired, you can alter the diff’s behavior to suit your needs using optional components.