Description
Precision Replacement Diaphragm. The Holley Fuel Pressure Regulator Diaphragm for 12-803BP is a critical component designed to maintain consistent fuel pressure within the Holley 12-803BP regulator. This diaphragm ensures optimal fuel delivery and engine performance by effectively responding to changes in fuel pressure. It is essential for maintaining fuel system reliability and efficiency.
Construction and Appearance. Crafted from durable rubber and steel materials, this diaphragm kit includes the diaphragm and necessary seals, designed to withstand fuel system pressures and exposure to fuel contaminants. The materials provide a reliable, long-lasting seal with optimal flexibility and resilience.
Installation. Installation is straightforward and requires no drilling or modification to existing components. It is intended for users comfortable with basic fuel system service tasks.
Warranty. This product comes with a manufacturer’s limited 90-day warranty.
Application. Specifically fits the Holley 12-803BP Fuel Pressure Regulator.
Holley 12-818
CA Residents: WARNING: Cancer and Reproductive Harm
- Replacement Fuel Pressure Regulator Diaphragm Kit for Holley 12-803BP Fuel Pressure Regulator
- Includes Diaphragm, O-Ring, and Seal
- Material Consists of Durable Rubber and Steel
- Specific Fit for Holley 12-803BP
- Mounting Hardware Not Included
- Performance Grade Component
- Part Type: Fuel Pressure Regulator Service Kit
- Category: Air and Fuel Delivery
- Manufacturer’s Limited 90-Day Warranty
- Fits Holley 12-803BP Fuel Pressure Regulator






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