Shorter installed height – shortened can height by approximately ½”, with no impact to the filter media’s performance. Improved spring – replaces old “leaf” spring with an improved coil spring design. Thicker-walled can – increased wall thickness for improved structural integrity. Stronger center tube – redesigned center tube for added strength with collapse pressures more than double the current design. New inlet design – changed four-hole design to an eight-hole design for approximately 30% greater inlet flow area. Increased lid thickness – increased thickness of seaming lid by approximately 35%, which subsequently provided for higher burst and impulse testing. Improved baseplate thread – replaces cut thread with an improved rolled thread, without affecting tolerances on the thread dimensions. By-pass valve – meets TCM specifications.