3" Blue Marine Registration Kit – Fits All Boat Brands & PWC (Replaces STIFFIE Shift Blue SH05, Hardline BLU350EC, STIFFIE HL102) 415HP visible cracks or fraying on

visible cracks or fraying on the belt

remove the housing cover and take note of the old thermostat's orientation before removing it

ensure the sender was installed in the correct orientation

Using it with diesel can lead to improper filtration and potential engine damage

Lightweight

3" Blue Marine Registration Kit – Fits All Boat Brands & PWC (Replaces STIFFIE Shift Blue SH05, Hardline BLU350EC, STIFFIE HL102) 415HP visible cracks or fraying onProduct Details This universal 3" Blue Marine Boat Registration Numbers and Letters Kit is designed for a perfect fit on all boat brands and personal watercraft (PWC). The 3 inch height of these decals meets US Coast Guard (USCG) requirements for vessel registration when installed correctly, ensuring you stay compliant on the water. This kit serves as a direct replacement for STIFFIE Shift Blue SH05, Hardline Products BLU350EC, and STIFFIE Hardline