Overview Reviews Similar Products Product Description Balboa Circuit Board VS501SZ Replaces the following part numbers and more: 54378 54378-01 54378-02 54378-03 VS501SZ 3-60-0092 Product Videos Custom Field Product Reviews Find Similar Products by Category Recommended Quick view Balboa 53210 Circuit Board 2500ESR2 $386.57 Quick view Balboa Circuit Board 2M7DLX 2000LE $499.95 Add to Cart Quick view Balboa Circuit Board Emerald Spa $225.95