Heat changes solenoid resistance, so a unit that shifts cold and misbehaves hot points straight at the electrical side.R5A51 r4a41 sensor vss output speed 06 01. This replacement returns the circuit to the response time the shift schedule was written around.Electrical symptoms and mechanical symptoms overlap, so the circuit is checked first. Shipping weight is 1 lb.The parts list below is exactly what ships. Compare it against your teardown before ordering.REMCO has supplied automatic transmission parts since 1991, and every order ships with its part listing so the receiving technician can check what arrived against what was ordered. Transmission Solenoid for R5A51 - replacement component designed for proper fit and function Designed to support proper hydraulic control, shift timing and pressure regulation during control circuit repair Package Includes: one transmission solenoid as described, supplied loose for control circuit repair Solenoid winding and valve assembly matched to the original resistance - designed for dependable service in the intended application. Ships at 1.00 lb, 18x16x5 in Intended for technicians diagnosing shift faults. Check resistance against the service manual value before install and route the harness clear of moving parts What's in the box WHAT IS IN THE BOX 1 x Sensor, R5A51 r4a41 VSS Output Speed 06 01 Compatible vehiclesFits Montero [97-04].