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Holley HP 65 GPH Inline Billet Fuel Pump 12-600 Street/Strip Carb or EFI Applications Supports up to 600 EFI or 730 Carb HP Compatible with Pump or Race gas Features: Billet aluminum construction for durability & good looks -10 an O-ring inlet and...

Holley HP EFI GM LS 24x  ECU & Harness Kit w/ Bosch O2 550-602 Features & Benifits: Intuitive software and features designed for novice and veteran tuners  Fuel and Ignition Control for 4, 6, 8, 10 cylinder even fire engines ...

Holley HP EFI GM LS 24x ECU & Harness Kit w/ NTK O2 550-602N Features & Benifits: Intuitive software and features designed for novice and veteran tuners  Fuel and Ignition Control for 4, 6, 8, 10 cylinder even fire engines  Capable of...

Holley HP EFI GM LS 58x ECU & Harness Kit w/ Bosch O2 550-603 550-602 Features & Benifits: Intuitive software and features designed for novice and veteran tuners  Fuel and Ignition Control for 4, 6, 8, 10 cylinder even fire engines ...

Holley HP EFI GM LS 58x ECU & Harness Kit w/ Bosch O2 550-607 Features & Benifits: Intuitive software and features designed for novice and veteran tuners  Fuel and Ignition Control for 4, 6, 8, 10 cylinder even fire engines  Capable of...

Holley HP EFI GM LS 58x ECU & Harness Kit w/ NTK O2 550-603N Features & Benifits: Intuitive software and features designed for novice and veteran tuners  Fuel and Ignition Control for 4, 6, 8, 10 cylinder even fire engines  Capable of...

Holley In-Tank Fuel System Kit 1978-87 GM G-Body 526-23 - Returnless Style Looking to upgrade the fuel system in your 1978-1987 G-Body? Take out the guesswork with Holley's new G-Body Returnless Fuel System Kit! This 1978-87 G-body Fuel System Kit was...

Holley In-Tank Retrofit Fuel Module 12-130 255 LPH Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 550 EFI or 700 Carb HP (HP Rating @ 60 PSI at 13.5 Volts / 10.4 AMP Draw) Features: The easiest way to convert your vehicle to an in-tank, EFI...

Holley In-Tank Retrofit Fuel Module 450 LPH 12-132 450 LPH Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 875 EFI or 1100 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 AMP Draw) Of course there are many variables, estimates are based on gasoline...

Holley In-Tank Retrofit Fuel Module 525 LPH Return Style 12-134 525 LPH Drop-In Retrofit EFI Fuel System w/Hydramat Supports up to 1200 EFI or 1450 Carb HP (@ 60 PSI at 13.5 Volts / 16.9 AMP Draw) Are you interested in an EFI retrofit kit, but just...

Holley Lo-Ram LS3 105mm EFI Intake Manifold 300-680BK The Holley LS3 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS3/L92 cylinder heads. These intake manifolds will work with OE or aftermarket cylinder...

Holley Lo-Ram LS3 105mm EFI Intake Manifold 300-683 Top-feed Dual Injector manifold and Fuel Rails  The Holley LS3 Lo-Ram intake manifold kits are designed for GM LS Gen III and IV engines equipped with GM LS3/L92 cylinder heads. These intake...