Description
The Filter Thread Adapter converts the threading on current-generation 2" female thread filters to fit MasterSpas hot tubs and swim spas manufactured before 2025. Pre-2025 spas used a female port designed for male-threaded filters. This adapter bridges that gap, letting you install the latest filters without any modifications to your spa.
The coarse threads connect to the filter and the fine threads connect to your spa.
Compatible Filters
Works with the 2" FPT versions of the Master Clear® MA-R4, MA-R5, and MA40.
If you are unsure whether you need this adapter, contact us before ordering and we will confirm the right fit for your model and year.
Due to the nature of this product, we cannot accept returns on opened or incorrectly ordered items. Please verify your model and production year before purchasing.
