This fits your .

Specification:
Maximum Pressure: 90 psi (6.2 bar)
Temperature:40-110°F/5-45°C
Shelf life: 5 Years


Note:
1. Protect filter housing from freezing. 
2.The rubber o-ring provides the water tight seal between the cap and the sump. it is important that the o-ring be properly SEATED IN THE GROOVE of a water leak could occur.

Geekpure Cap Head for Big Blue Housing-Clear - B07D9JH37Z