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Holley replacement power valves are an important component in the power enrichment circuit of Holley's performance carburetors. They operate by using engine vacuum to control their opening and closing rate. When they open, additional fuel is supplied to the main system during heavy load or under full power situations to eliminate hesitation and bogging--ensuring the smooth delivery of power without any drivability concerns. They're available in many different vacuum ranges to time the system's operation to your specific requirements, and they come in your choice of single-stage, two-stage, and high-flow designs. A gasket is included.
( 131 )
$31.79
$28.61
On Sale
FUELAB fuel cell vent kits give your fuel cell the proper ventilation that it needs. These kits include everything you need to connect to FUELAB Quick Service Surge Tank (QSST) rollover valve and all the way to your vent filter. Kits include: * 10 AN push-lock fitting * 5/8 fuel vapor hose * 5/8 barb connector * Vent filter (yellow) * Hose clamps
Not Yet Reviewed
$60.00
$54.00
On Sale
Power valve blowout protection can be added to carb models 2300, 4150, and 4160 with these Holley power valve check ball kits. These kits include a spring, a brass seat and check ball, a drill bit, and a stop. They will effectively protect the power valve, and are easy to install.
( 26 )
$31.79
$28.61
On Sale
The ability to change the sound of a blow-off valve is increasingly becoming an important issue with buyers—who want to sound different from everyone else. Go Fast Bits offers replacement whistling trumpets that deliver a different sound! In 2004, the whistling trumpet was first released, emitting a piercing screech when driving aggressively. These new models can be used in place of the standard trumpet on GFB valves—and will make a unique whistling sound. However, it is necessary to run the valve so that all (or most) of the air vents through the trumpet. Order the model recommended for use with your valve application.
Not Yet Reviewed
$38.48
$34.63
On Sale
Go Fast Bits Mach 2 upgrade kits convert blow-off valves from recirculating to atmosphere venting. To vent the Mach 2 to atmosphere, you need to ensure the piston stays closed at idle and the recirc hose is plugged. The 5930 Atmosphere Conversion Kit includes a 30mm hose plug to block off the recirc hose, a trumpet to replace the hose outlet on the Mach 2 (not necessary for functionality, but makes the sound louder!), and a firmer spring. The Mach 2 is supplied with a softer spring that's suitable for recirculation venting or cars with idle vacuum of 18inHg or less. If the piston stays closed with the existing spring in the Mach 2, there is no need to swap it out. However, if the piston hovers open at idle even with the spring pre-load maxed, the firmer spring in this kit should be installed to prevent stalling or backfiring.
Not Yet Reviewed
$37.80
$34.02
On Sale
Do you need to refurbish your tired Holley carburetor? A Holley Renew kit brings your carb back to original specs and like-new condition! These carburetor Renew kits from Holley come complete with all of the necessary gaskets, O-rings, pump diaphragm(s), needle and seat(s), power valve(s), detailed instructions, and hardware for a complete rebuild. When a Renew is in order, trust Holley to do it right!
( 589 )
$47.06
$42.35
On Sale
Holley Fast Kits include the most commonly replaced parts you'll need to bring your Holley carb back to its original condition. Each kit contains genuine Holley service parts, explicit step-by-step instructions, a detailed tuning guide, and a package that serves as a handy parts tray--all at an affordable price.
( 124 )
$44.98
$40.48
On Sale
FASS Fuel Systems banjo bolt removal kits allow you to replace fuel pump fittings on a variety of engine applications. These kits include various sizes and quantities of straight and 90 degree steel fittings, as well as fuel hose. Order the model recommended for your vehicle.
( 5 )
$51.30
$46.17
On Sale
When it's time to rebuild your Demon carburetor, you'll need one of these Demon Carburetion carburetor rebuild kits. They include every possible gasket and seal you'll need, along with many parts not included in other kits, like detailed instructions and a power valve. Some kits include standard gaskets for fuel bowl, metering block, and bowl screws.
( 154 )
$53.49
$48.15
On Sale
Summit Bucks
Boost Products USA silicone hump couplers are reinforced with textile layers to be extreme pressure resistant, and also to vacuum in your Air Charge System. Suitable for connections to intercooler pipes and lines, and water lines, the silicone hump couplers can withstand up to 5 Bar and temperatures up to 220 degrees C (not to be used as fuel or oil line). These quality hose couplers are designed with a hump in the middle, which allows the connector to bend or to stretch. This results in a bendable flexibility, which is highly recommended for throttle valves or intercoolers connected to the vehicles body, and similar connections. The silicone is durable and flexible, stable, and color-proof after many years. Matter of fact, lots of well-known companies in the tuning and motorsport areas rely on these quality silicone hump couplers by Boost Products.
Not Yet Reviewed
$22.42
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$54.71
$20.18
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$49.24
On Sale
Quadboss carburetor repair kits provide all the parts needed to repair your machine's carburetor at a fraction of the cost of OEM. Each kit contains all the necessary gaskets, O-rings, float valve assembly or float needle, and jets to repair one OEM carburetor body. Features: * Nitrile rubber material is used on all O-rings and rubber gaskets * High performance interface gasket material is used for all paper gasket applications * OEM jet sizes are included * For machines with two carburetors, the kit will contain all necessary components to repair both carburetors
( 2 )
$22.58
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$59.16
$20.32
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$53.24
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