SKU: 54357
Balboa Circuit Board, VS501Z 54357
$549.99
Balboa 54357-03 Replacement circuit board for VS501 Spa Pack with the following chip numbers.
Chip Number VS501ZR1(x) or VS501ZR2(x) or VS501R1(x) Balboa Water Group Part Numbers 54357-01, 54357-02, 54357-03,54356
Very Important Do not order or purchase a replacement Balboa circuit board on appearance alone, a number of the Balboa circuit boards look the same but have different software or operating chips on them and they are not interchangeable.