

Jacuzzi J300 ProLast Covers (2005–2013)
Genuine Jacuzzi® ProLast™ replacement covers in black for the J310/J315 and J370/J375 hot tubs manufactured between 2005 and 2013. These are the older J300 Series cover versions; check your model year and part number before ordering.
Why choose ProLast™?
- 25% lighter than standard vinyl covers for easier handling.
- Durable, marine-grade fabric with UV and water resistance for outdoor use.
- Double-stitched with outdoor thread for added durability.
- Helps keep debris out and retain heat when your spa is covered.
Choose the correct cover
| Model / cover version | Jacuzzi part number |
|---|---|
| J310/J315 (2005–2013) ProLast Black | 6476-508PC |
| J370/J375 (2005–2013) ProLast Black | 6476-504PC |
Check your spa model, manufacturing year and existing cover part number before ordering. Cover designs can change between model years, and the same model name may have more than one cover version. If you are unsure, call our Customer Care Team on 01449 710167 for help choosing the correct cover.
Care & maintenance
Clean regularly with mild soap and a soft sponge or brush, then rinse and allow to dry. Remove leaves and debris to help keep the cover in good condition.
Warranty
ProLast™ covers include a 3-year manufacturer’s warranty against defects in materials and workmanship, subject to the manufacturer’s terms.
Stock & delivery
Availability is based on stock held by Jacuzzi. In-stock covers are supplied from Jacuzzi; please contact us to confirm delivery arrangements and timing. Out-of-stock covers can still be ordered, with an estimated delivery time of 8–12 weeks.
Cover lifters
A suitable cover lifter can make removing and replacing your cover easier. View our cover lifters or contact us for compatibility advice.
The photograph shows an example of a black ProLast cover. Shape and dimensions vary by model.