Update your semi with a seamless transition of gears, with the OTR 14" x 1.75" Angle Spring Clutch that ensures you're Ready for the Road Ahead™. To permit the safe change of gears, this replacement component engages / disengages the engine from the transmission. Fashioned with top-tier materials to transmit maximum power, deliver a smooth engagement, and reduce drag. FleetPride is your First Click in Heavy Duty®.