Description
Precision Vacuum Monitoring. The Holley 2-Inch Vacuum Gauge; 0 to 30 In. Hg is designed to provide accurate measurement of vacuum levels in a vehicle’s intake manifold or other vacuum systems. It is essential for tuning, diagnostics, and ensuring optimal engine performance by monitoring vacuum pressure in real time.
Construction and Appearance. This gauge features a durable chromed steel case with a sleek, silver bezel offering corrosion resistance and longevity. The clear lens protects the white round face with crisp black markings for easy readability, while the brass 1/8 NPT fitting ensures a secure and reliable connection.
Installation. Installation includes mounting hardware, and some adaptation may be required to fit existing vacuum lines or ports.
Warranty. This product comes with a Manufacturer’s Limited 90 Day Warranty.
Application. Fits Universal; Some Adaptation May Be Required.
Holley 26-501
CA Residents: WARNING: Cancer and Reproductive Harm
- 2 In. Diameter
- 0-30 In. Hg
- Chromed Steel Case
- 0.125 In. NPT Brass Fitting
- Hose Fitting Included
- Performance Grade
- Analog Display Format
- White Face Color
- Round Face Shape
- Clear Lens Color
- Black Pointer Color
- Mounting Hardware Included
- Universal Fit
- Fits Universal; Some Adaptation May Be Required






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