Holley 12-807 Fuel Pressure Regulator Diaphragm Rebuild Kit - Holley Regulators

SKU: BBVL_12-807
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About Holley Holley is the legendary American carburetor and fuel-injection ...Read More

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Watch in action

Restore Precision Control to Your Holley Fuel Regulator

Ensure optimal performance and consistent fuel pressure with the Holley 12-807 Fuel Pressure Regulator Diaphragm Rebuild Kit. The diaphragm is a critical component within any fuel pressure regulator, directly influencing its ability to maintain stable pressure. Over time, diaphragms can wear or degrade, leading to erratic fuel pressure and compromised engine performance. This genuine Holley kit provides the necessary parts to revitalize your regulator, restoring its factory-fresh functionality.

Benefits of the 12-807 Rebuild Kit:

  • Genuine Holley Quality: Manufactured to original specifications for a perfect fit and reliable operation in Holley regulators.
  • Restores Pressure Stability: Replaces worn diaphragms to ensure consistent and accurate fuel pressure delivery.
  • Prevents Fuel Leaks: A fresh diaphragm helps seal the regulator, preventing potential fuel leaks and maintaining system integrity.
  • Cost-Effective Solution: Extends the life of your existing Holley fuel pressure regulator, saving you money compared to a full replacement.
  • Enhanced Engine Performance: Stable fuel pressure contributes to better throttle response, smoother idle, and improved fuel efficiency.

Don't let a failing diaphragm compromise your engine's fuel delivery. The Holley 12-807 kit is an indispensable maintenance item for any vehicle utilizing a Holley fuel pressure regulator. By proactively replacing these wear components, you safeguard your fuel system's reliability and ensure your engine always receives the precise amount of fuel it needs for peak operation. Trust Holley for the components that keep you running strong.

Kit Details & Compatibility:

  • Part Number: 12-807
  • Component: Diaphragm and associated parts
  • Application: Various Holley Fuel Pressure Regulators
  • Kit Type: Rebuild Kit

Keep your fuel system in top condition with the Holley 12-807 Regulator Diaphragm Rebuild Kit, available at GGCRACING.COM.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Watch in action

Restore Precision Control to Your Holley Fuel Regulator

Ensure optimal performance and consistent fuel pressure with the Holley 12-807 Fuel Pressure Regulator Diaphragm Rebuild Kit. The diaphragm is a critical component within any fuel pressure regulator, directly influencing its ability to maintain stable pressure. Over time, diaphragms can wear or degrade, leading to erratic fuel pressure and compromised engine performance. This genuine Holley kit provides the necessary parts to revitalize your regulator, restoring its factory-fresh functionality.

Benefits of the 12-807 Rebuild Kit:

  • Genuine Holley Quality: Manufactured to original specifications for a perfect fit and reliable operation in Holley regulators.
  • Restores Pressure Stability: Replaces worn diaphragms to ensure consistent and accurate fuel pressure delivery.
  • Prevents Fuel Leaks: A fresh diaphragm helps seal the regulator, preventing potential fuel leaks and maintaining system integrity.
  • Cost-Effective Solution: Extends the life of your existing Holley fuel pressure regulator, saving you money compared to a full replacement.
  • Enhanced Engine Performance: Stable fuel pressure contributes to better throttle response, smoother idle, and improved fuel efficiency.

Don't let a failing diaphragm compromise your engine's fuel delivery. The Holley 12-807 kit is an indispensable maintenance item for any vehicle utilizing a Holley fuel pressure regulator. By proactively replacing these wear components, you safeguard your fuel system's reliability and ensure your engine always receives the precise amount of fuel it needs for peak operation. Trust Holley for the components that keep you running strong.

Kit Details & Compatibility:

  • Part Number: 12-807
  • Component: Diaphragm and associated parts
  • Application: Various Holley Fuel Pressure Regulators
  • Kit Type: Rebuild Kit

Keep your fuel system in top condition with the Holley 12-807 Regulator Diaphragm Rebuild Kit, available at GGCRACING.COM.

Product Details

Product Description

About Holley

Holley is the legendary American carburetor and fuel-injection brand — over 100 years of induction history. From the iconic 4150 four-barrel to today's Sniper EFI conversions, Holley remains the choice for muscle car restorations, Pro Mod, and gasser builds.

Watch in action

Restore Precision Control to Your Holley Fuel Regulator

Ensure optimal performance and consistent fuel pressure with the Holley 12-807 Fuel Pressure Regulator Diaphragm Rebuild Kit. The diaphragm is a critical component within any fuel pressure regulator, directly influencing its ability to maintain stable pressure. Over time, diaphragms can wear or degrade, leading to erratic fuel pressure and compromised engine performance. This genuine Holley kit provides the necessary parts to revitalize your regulator, restoring its factory-fresh functionality.

Benefits of the 12-807 Rebuild Kit:

  • Genuine Holley Quality: Manufactured to original specifications for a perfect fit and reliable operation in Holley regulators.
  • Restores Pressure Stability: Replaces worn diaphragms to ensure consistent and accurate fuel pressure delivery.
  • Prevents Fuel Leaks: A fresh diaphragm helps seal the regulator, preventing potential fuel leaks and maintaining system integrity.
  • Cost-Effective Solution: Extends the life of your existing Holley fuel pressure regulator, saving you money compared to a full replacement.
  • Enhanced Engine Performance: Stable fuel pressure contributes to better throttle response, smoother idle, and improved fuel efficiency.

Don't let a failing diaphragm compromise your engine's fuel delivery. The Holley 12-807 kit is an indispensable maintenance item for any vehicle utilizing a Holley fuel pressure regulator. By proactively replacing these wear components, you safeguard your fuel system's reliability and ensure your engine always receives the precise amount of fuel it needs for peak operation. Trust Holley for the components that keep you running strong.

Kit Details & Compatibility:

  • Part Number: 12-807
  • Component: Diaphragm and associated parts
  • Application: Various Holley Fuel Pressure Regulators
  • Kit Type: Rebuild Kit

Keep your fuel system in top condition with the Holley 12-807 Regulator Diaphragm Rebuild Kit, available at GGCRACING.COM.

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