1In Air Cleaner Riser

The 1 inch air cleaner riser is a precision spacer designed for carburetor-equipped engines where intake manifold clearance or hood fit demands elevation of the air filter assembly. Whether you're rebuilding a classic hot rod, upgrading carb sizing on a vintage muscle car, or troubleshooting interference issues between an aftermarket intake and factory air cleaner housing, this spacer solves a common modification challenge. By lifting the air cleaner 1 inch above its standard mounting position, you gain critical clearance without sacrificing filtration integrity or aesthetic appeal.

Constructed from durable black plastic with a 5 1/8 inch carburetor flange interface, this 1 inch air cleaner riser maintains a rigid, vibration-resistant fit between your carb top and factory or aftermarket air cleaner housing. The engineering is straightforward but critical: proper spacing ensures even air distribution, prevents carburetor heat soak by maintaining gap integrity, and allows hose routing flexibility for PCV systems or emission lines. At just 0.2 lbs, the lightweight design adds no rotational mass while preserving the structural stability your fuel delivery system requires during acceleration or engine bay vibration cycles.

Technicians and engine builders favor the 1 inch air cleaner riser when fitting larger displacement carburetors (750 CFM and above) into factory air boxes, or when installing modern performance intakes on vehicles with hood clearance constraints. This spacer is essential for big-block swaps, tunnel-ram conversions, and any scenario where factory air cleaner geometry conflicts with modified engine dress-up or induction systems. Installation is straightforward: position the riser atop the carburetor flange, nest your air cleaner housing into the 5 1/8 inch interface, and secure as normal. Verify hose clearance and carburetor heat shroud compatibility before final torque.