Universal 4-pin voltage regulator for the alternator in OEM quality. This regulator provides reliable voltage control to protect the battery and electrical system and to maintain stable operation of the vehicle’s charging circuit. The 4-pin design ensures correct connection and secure fit. Key benefits - Function: regulates alternator output to keep charging voltage within the correct range, preventing overcharge or undercharge. - Compatibility: broad compatibility with multiple makes and models listed below, making it a versatile replacement part. - Build quality: OEM quality components designed for durability and long service life. - Installation: designed for easy replacement with a plug-and-play approach on compatible 4-pin regulators. - Performance: helps prevent common charging problems such as battery drain, voltage dips, and electrical noise. Compatibility Suitable for the following models and lines - ATU Explorer Classic Race GT Spin GE 50 - ADLY ATV Air Tech Blizzard CAT GTA GTC Jet Noble Panther Silver Fox Super Sonic TB Thunderbike 50 - BAOTIAN BT49QT-20C BT49QT-28A BT49QT-28B BT49QT-28C 50 - BENERO GT K2 Speedy 50 0 - CPI Aragon GP Bingo Bravo Formula R Freaky GTR Hussar Oliver City Sport Popcorn Tenesse 50 - Explorer Cracker Race GT Spin GE Twister Kallio K50 - GENERIC Cracker Jump Race GT Spin GE 50 Stroke Toxic XOR XOR2 50 - KEEWAY ARN Agora Easy F-ACT NKD Naked Racing SP City Evo Flash Focus Gocchia Hacker Hurricane Matrix Pixel RY8 RY6 Swan Venus 50 - Kreidler Florett Galactica Hiker Jigger Vabenne 50 - LONGJIA Digita Estate Excatly F1 Firefox Grido LJ50QT Speedjet-Evo Trevis Two Liquid Versus 50 - MOTOWELL Crogen Magnet Retrosa City RS Sport 50 - MUZ MZ Anthony Max Moskito Classico FB RX SX 50 - Rivero GP Linos Phoenix Racing SP 2 XR 50 - SACHS Eagle SX1 Speedforce Speedjet 50 Notes - Please compare the item with your old part before purchasing to confirm fitment. - This is a direct replacement in OEM style; check your model year and current regulator type to ensure compatibility. Usage scenarios - Scenario 1: You own an ATU or BAOTIAN scooter or a CPI, LONGJIA, or MOTOWELL four-pin regulator-equipped model listed above and notice charging irregularities or battery discharge. Replacing with this regulator restores stable voltage and reliable starting performance. - Scenario 2: You are maintaining a fleet of small displacement scooters or ATVs (for example BAOTIAN BT49QT series or CPI Aragon variants) and need a dependable, OEM-quality regulator to prevent charging fluctuations during daily use. - Scenario 3: You run a shop or personal service on multi-brand lines (KEEWAY, LONGJIA, MUZ, Rivero, SACHS and others in the list) and keep a stock of universal 4-pin regulators for efficient, wide-range repairs and replacements. This regulator delivers reliable performance across a wide range of 4-pin alternator applications, pairing OEM-quality construction with broad model coverage for practical, durable charging system restoration.