I haven't used a Wix replacement filter but their website indicates WO1AG152 is the replacement for Westerbeke 40154 but cautions, check the vehicle's manual for correct replacement. I was able to secure a supply of Westerbeke labeled filters from an online supplier.
Followup to my Sierra filter problem last fall: They refunded the cost of 2 filters and oil but claimed to find no problem with my returned filters. They then asked if I would send my photos of the Westerbeke and Sierra in a side by side comparison showing a difference in the o-ring dimensions. I haven't received any further responses. In the meantime, I'll use OEM filters, particularly since they're the same price
Perhaps tflexinc.com who supplies Sierra products would like to comment for the benefit of readers of this forum.