21 lbs. Oil and Heat resistant Belt Type-V Belt Top Width-21/32 in Material-Kevlar (Aramid) Outside Length-34 in Height-5/16 in Weight: 0.Aftermarket replacement for 1667200 SIMPLICITY 1690380 Belt for Drive, 4LK340 The outer fabric wrap is treated with highly oil and heat resistant, engineered synthetic rubber compound, specifically compounded for excellent wear resistance, proven through thousands of hours of testing..