Holley Efi 554-108 5 Bar Map Secondary Diaphragms Designed for high mileage multiple-accessory

Designed for high mileage multiple-accessory drives

With the ability to jump-start a vehicle up to 40 times on a single charge

Invest in Optimum Opti-Seal to maintain your car's aesthetic appeal and prolong its life against harsh elements

Manufacturer Part Number: FMM-20

The dual-sided design features hooks for easy storage

Holley Efi 554-108 5 Bar Map Secondary Diaphragms Designed for high mileage multiple-accessory1 bar MAP sensor is used in all naturally aspirated applications. The 2 Bar MAP sensor is to be used in all forced induction applications up to 14. 7 PSI Boost. The 3 Bar MAP sensor is to be used in all forced induction applications up to 29. 4 PSI Boost.