Holley Diagnostic & Testing Tools
- Holley®0 to 30 psi Vacuum Tester Gauge (26-501)Universal 0 to 30 psi Vacuum Tester Gauge by Holley®. This product is designed and manufactured to help you keep the fuel system of your vehicle in mint condition. It will make fuel system maintenance easier and more convenient, saving...Designed for your fuel system maintenanceMade from quality materials to survive the test of time$54.95