- Manufactured from cast aluminium for superior durability and performance stability.
- Open plenum layout tailored to tune air-fuel distribution and manifold vacuum.
- Fits standard holley squarebore flange carburettors and intake manifolds.
Optimise your engine's induction performance with the Carburettor Spacer 1” Holley Squarebore Open Aluminium. Constructed from cast aluminium, this open plenum spacer fits standard Holley squarebore flange carburettors. It increases intake plenum volume and runner length to boost mid-to-high RPM torque and horsepower, making it an ideal modification for street and strip performance tuning.