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The Moroso electric fuel pump spring specified for Holley is rated 12–19 psi and is intended to be used with compatible electric fuel pump assemblies to achieve that pressure range. This spring provides a source-specified pressure range for Holley electric pump systems and serves as a replacement component when matching a 12–19 psi operational setting is required.
Moroso Electric Fuel Pump Spring - Holley - 12-19psi
