Camshft Degree Wheel, Cam Degree Bushing Kit, Available individually under 47600, 47602, 47604, 47606 and 47608., Cam Degree Bushing Kit, None, A degree bushing is essential to getting your valve timing correct when you install and degree your cam. Our degree bushing kit includes 0, 2, 4, 6 and 8 degree bushings., Engine Camshaft Bushing Kit.