Description: The Transmission Speed Sensor monitors the speed of the automatic. transmission input shaft and output shaft to verify what gear the transmission is in and to. monitor the transmission for internal slippage. Part Number?2501056G00 2501073P00 Fit for Nissan D21 Pickup,Frontier,Pickup. Specification: Material: Metal and Plastic Size: Approx 117mm*25mm/4.60x0.98 inches Wrie Length: Approx 290mm/11.42 inches For Nissan D21 Pickup 1994 For Nissan Frontier 1998-2001 For Nissan Pickup 1995-1997 Package Includes: 1 Piece Speed Sensor Note: Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) Due to the difference between different monitors, the picture may not reflect the actual color of the item. Please understand, Thank you. Please check the size measurement and the picture carefully before making payment