The STS Parts Adjustable 12V Voltage Regulator M5-228A is engineered to deliver reliable charging performance for Ford and New Holland tractors, backhoes, and industrial equipment. Designed as a direct-fit aftermarket replacement, this regulator offers adjustable output (set point approx. 14.2V) and OEM-quality functionality, making it the perfect choice for equipment owners, farmers, and mechanics. ⚙️ Key Specs Voltage: 12V Adjustable: Yes (Factory set ~14.2V) Circuit Type: B-Circuit Polarity: Negative Plug Type: E (Wiring Code 6) Terminals: Orange Trio (+), Black Ground, Green Field, Yellow Ignition 🔁 Cross Reference OEM Numbers Ford: D3JL-10316-A, D3JL-10316-AB, D3NN-10316-A, D7NN-10316-B Motorola: 5-173, 5-205, 5-210, 5-228, 5-230, 8RD2035, 8RH2006 Prestolite: 105-173, 105-205, 105-210, 105-228, 105-230 Lester: 7377 🚜 Compatibility (Partial List) Ford Tractors: 2310, 2600, 2610, 2810, 2910, 3600, 3610, 3900, 3910, 4100, 4110 Ford Backhoes: 555, 555A, 555B, 650, 655A, 750, 755, 755A New Holland Tractors: 2310, 2600, 2610, 2810, 2910, 3600, 3610, 3900, 3910, 4100, 4110, 5610, 6610 Compatible with Motorola / Prestolite 8AL Series Alternators 📦 What's Included (1) Adjustable Voltage Regulator M5-228A Equivalent