Features: 1. Fitment: Voltage regulator rectifier is professionally manufactured, suitable for John Deere 130 160 165, direct replacement. 2. Part Number: Replacing OE numbers for reference are SH578 12, M70121, M97348, 21066-2056, 21066-2070, built to meet OEM specifications. 3. Better Heat Dissipation: The voltage regulator is made of high strength aluminum, with improved heat dissipation design and extended service life. 4. Protect Battery: The rectifier helps stop charging the battery when full, preventing overcharging and extending battery life. 5. Waterproof and Shockproof: Integrated full sealing process makes the rectifier waterproof and shockproof. Rust-resistant material helps prolong rectifier life. 6. High Performance: The voltage rectifier uses high-quality laminated materials and electronic components to improve charging capacity. Specification: Item Type: Voltage Regulator Material: Aluminum Operating Voltage: 12V Terminal ID: B+, IGN, B- / AC, L, AC OE: SH578 12 For John Deere: M70121, M97348 21066-2056, 21066-2070 Fitment: For John Deere 130 160 165 Note: 1. Please double check the part number of your item; reference information is for compatibility guidance only. 2. If you are unsure about compatibility, please verify before purchase to avoid returns.