Sonnax FD-CC-17L4 is a fully machined, 4-stud version of FD-CC-17S. This forged front cover, like FD-CC-17S, Sonnax’s 6-stud version, has a deeper spline with 70% additional height engagement over OE front covers for extra torque capacity and reduced wear.

• High-strength weld-on studs will not flex, pull out or screw out
• Thicker cross section between studs and lockup surface for a stronger cover
• Better support of the studs and better heat dissipation
• Center thrust area is ground and parallel for use of turbine hubs with bearings, fiber washers or bimetals
• 4 Studs
• Gas applications only