All Items

Carburetor Power Valve - Hi-Flow - 3.5" of Mercury to open valve

Proper power valve selection is crucial to carburetor tuning Demon Fuel Systems offers a complete range of quality power valves to accommodate every tuning requirement. Our power valves are rated in inches of mercury (amount of vacuum) required to open...

Carburetor Power Valve - Hi-Flow - 4.5" of Mercury to open valve

Proper power valve selection is crucial to carburetor tuning Demon Fuel Systems offers a complete range of quality power valves to accommodate every tuning requirement. Our power valves are rated in inches of mercury (amount of vacuum) required to open...

Carburetor Power Valve - Hi-Flow - 5.5" of Mercury to open valve

Proper power valve selection is crucial to carburetor tuning Demon Fuel Systems offers a complete range of quality power valves to accommodate every tuning requirement. Our power valves are rated in inches of mercury (amount of vacuum) required to open...

Carburetor Power Valve - Hi-Flow - 6.5" of Mercury to open valve

Proper power valve selection is crucial to carburetor tuning Demon Fuel Systems offers a complete range of quality power valves to accommodate every tuning requirement. Our power valves are rated in inches of mercury (amount of vacuum) required to open...

Carburetor Power Valve Block-Off Plug - Completely blocks all power-valve circuitry

Race Demon Replacement Fuel Bowl Kit - Race Demon Fuel Bowl Kit - Vacuum Secondary Fuel Bowl

Race Demon Fuel Bowl Kit - Vacuum Secondary Fuel Bowl

Race Demon Replacement Sight Glasses, O-rings & Snap Rings - Replacement Sight Glasses, O-rings & Snap Rings for Race Demon™ fuel bowls

Replacement Sight Glasses, O-rings & Snap Rings for Race Demon™ fuel bowls

Kickdown Spring & Perch Kit - Perfect for Ford automatic transmissions and 4150 Demon carburetors

This kit is required when installing a 4150 Demon carburetor that will be used with a Ford automatic transmission

650 CFM Aluminum Mighty Demon Carburetor - Mechanical Secondaries Annular, Blow Through

Holley is proud to announce that the next generation of Race Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum...

650 CFM Aluminum Mighty Demon Carburetor - Vacuum Secondaries Down-Leg

Holley is proud to announce that the next generation of Race Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum...

750 CFM Aluminum Mighty Demon Carburetor - Mechanical Secondaries Annular, Blow Through

Holley is proud to announce that the next generation of Race Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum...

750 CFM Aluminum Mighty Demon Carburetor - Mechanical Secondaries Down-Leg

Holley is proud to announce that the next generation of Race Demon™ carburetors have arrived. They are available in a full range of sizes and options for your street/strip car. They feature billet-aluminum metering blocks, billet aluminum...