Beta 1 Filters B1SO0004431 is a quality replacement for FILTER MART / F74004K6B.Our filters meet or exceed OEM Standards..We reference the OEM solely for identification and cross-referencing purposes.
.We reference the OEM solely for identification and cross-referencing purposes. Beta 1 Filters B1SO0003940 is a quality replacement for SOFIMA / CCA302CD1.Our filters meet or exceed OEM Standards.