Description
When your fuel transfer pump starts losing its prime or you’re getting uneven flow, it’s usually the diaphragm that’s giving up the ghost. A worn diaphragm means poor fuel flow, inconsistent pumping, and more time waiting around when you should be filling tanks and getting back to work. This complete rebuild kit gets your 400B series pump back to working like new.
What You’re Getting
- Complete diaphragm assembly with Santoprene material that resists fuel and weather
- Four O-rings to seal everything up tight and prevent vacuum leaks
- Four screws and four ball check valves – all the hardware you need
- Everything’s genuine Fill-rite parts, so you know it’ll fit right and work properly
Built for Real Farm Work
This kit works with Fill-rite 400B series fuel transfer pumps – the workhorses you see on farms, construction sites, and anywhere folks need to move diesel or gas reliably. Whether you’re transferring fuel from bulk tanks to equipment or filling up tractors and trucks, these pumps handle the daily grind of keeping operations fueled up and running.
Made to Last
The Santoprene diaphragm material is specially formulated to handle both gasoline and diesel without swelling, cracking, or losing flexibility. It resists the ethanol in today’s fuels and won’t deteriorate from sitting in storage tanks all winter. The check valves and seals are built to the same standards as the original equipment.
Good to Know
Most folks can rebuild these pumps in about an hour with basic hand tools. Clean everything thoroughly before reassembly – any dirt or debris will damage the new diaphragm right away. Take a photo of how everything comes apart so you remember the order going back together. Prime the pump several times after reassembly to seat the new diaphragm properly.
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