When a positive-displacement lift pump (PowerFlo or similar) already pressurizes the system, the factory primer bulb is a common leak point. Fleece's sealing cap replaces that bulb and includes a 1/8 in. NPT port for a low-pressure gauge, or you can plug it with the included O-ring plug. Fasteners cover both 8-32 and M4 applications.
Owners of 2001-2016 GM 2500/3500 6.6L Duramax trucks with an aftermarket lift pump.
| Truck | 2001-2016 GM Silverado/Sierra 2500/3500 6.6L Duramax |
|---|---|
| Port | 1/8 in. NPT with plug |
| Warranty | 1-year limited parts (Fleece) |
Professional install available at Powertech Diesel, Idaho Falls — call 208-542-7793.
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