The award-winning Holley Truck Avenger carburetor is the first carburetor designed from the flange-up as an off-road carburetor. No other carburetor comes close to the Truck Avengers ability to offer peak performance at extreme vehicle attitudes over rough terrain, and lightning-quick stump-pulling low speed response for towing and mud-bogging.

Exclusive dichromate finish is built for durability and good looks without the maintenance of a polished carb. Externally adjustable, No Trouble spring loaded needle and seats promote stable fuel levels for improved fuel control under all conditions. Square fuel bowls provide precise fuel control and maintain classic Holley look.

Model 4150 With side hung floats.
Electric choke.
Quick-change vacuum secondary.
Spring-loaded needle and seat assemblies.
Ford A/T kickdown.
Power valve blow-out protection.
4 Vacuum ports (PCV, power brake, spark, accessories).
High vacuum signal primary annular boosters.
One-piece, off-road fuel bowl vent tube design.
100% wet-flow tested and calibrated.
Precision engineered by Holley specifically for the demands of the truck enthusiast.
Exclusive New "No Trouble" metering block eliminates fuel spillover through the boosters at extreme angles. Flood-free operation up to 40 degrees while climbing and 30 degrees during side hill maneuvers and "nose down" descents. This allows you to off-road in confidence with out the annoying hesitations, stalling and flooding typically associated with carbs in an off road environment.
New Annular Boosters provide incredible low and mid range throttle response and torque.
Exclusive dichromate finish is built for durability and good looks without the maintenance of a polished carb.
Externally adjustable, "No Trouble" spring loaded needle and seats promote stable fuel levels for improved fuel control under all conditions.
Square fuel bowls provide precise fuel control and maintain classic Holley look.
Single fuel inlet banjo fitting for "Bolt on and Go" simplicity.
New Viton fuel transfer tube seals ensure leak proof operation.
Exclusive New "No Trouble" one-piece vent tube eliminates fuel spillover from the vent tubes during extreme maneuvers and lends a tough performance appearance to the carb.
Includes clear sight plugs for easy float setting, quick-change vacuum secondary cap and electric choke for "No Trouble" operation.
Four vacuum ports included for easy accessory hookup.
Designed for the off-road enthusiast but works equally well in street truck applications.
Packaged in attractive New Truck Avenger box to complement existing Street Avenger styled packaging for easy plan-o-gram layout.
Limited Lifetime Warranty.