Can I use the new Vectra 2 couplers on a Vectra 1 Volute?
Overview
The new Vectra 2 (S2, M2, L2) style QuickCouples cannot be used on the old style Vectra 1 (S1, M1, L1) Volutes. We have redesigned the coupler size and threads on the Vectra 2 Volute. That said, the Volute from V1 and V2 Vectras are interchangeable should you ever need to change your motor without changing the plumbing.
Vectra 1 Vectra 2