The Kubota W21CS01271 spring is an authentic OEM replacement part designed for various Kubota L-Series tractors including the L3301, L3901, L4701, L3560, L4060, L4760, L5060, L5460, L6060, MX4800, MX5200, MX5800, MX6000, and RTV-X utility vehicles such as the RTV-X1100CR, RTV-X1100CW, RTV-X1120DR, RTV-X1120DW, RTV-X1140R, and RTV-X1140W. This genuine spring measures approximately 38.1 mm in length and has a weight of about 0.023 kg, providing essential tension and support for critical components.