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

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