Cast HPMX IDF Air Cleaner

OVERVIEW

When you are pushing your air-cooled engine to its limits with a dual-carburetor setup, airflow is the lifeblood of your horsepower. The EMPI Cast HPMX IDF Air Cleaner isn''t just an accessory; it''s a precision-engineered component designed to provide maximum intake volume while protecting your expensive internal components from road debris and dust. Unlike flimsy stamped-steel alternatives that can warp or fail to seal properly under heat, this unit features a heavy-duty die-cast base that ensures a perfectly flat mating surface against your HPMX or Weber IDF carburetor. This rigid construction eliminates the risk of "false air" leaks that can lean out your fuel mixture and cause erratic idling or dangerous engine temperatures. The oval design is specifically tailored to fit within the tight confines of a Volkswagen engine bay, providing the necessary clearance for decklids and shrouds without sacrificing the surface area of the filter media.

Beyond the structural integrity, this air cleaner assembly includes a high-performance 3.5-inch washable and reusable gauze filter element. This high-flow red filter media is designed to provide superior filtration efficiency without sacrificing the high-velocity airflow required by 40, 44, or 48mm carburetors. Whether you are building a show-stopping Type 1 Cal-Look Beetle, a rugged Baja Bug, or a high-revving sand rail, the polished finish and cast texture offer a timeless, professional aesthetic that screams performance. Each unit is sold individually and comes complete with the necessary mounting hardware and a high-quality gasket, ensuring that you have everything needed for a professional-grade installation. For those running dual-carburetor setups, these air cleaners provide the consistency and reliability required to keep your twin-throats synchronized and breathing clean air for years to come.

FITMENT

This air cleaner is designed for high-performance dual-carburetor applications across the entire air-cooled VW spectrum. While it fits the carburetors listed below, ensure you have adequate engine bay height for the 3.5-inch filter profile.

• Compatible Carburetors: EMPI HPMX (40mm & 44mm), Weber IDF (40mm, 44mm, & 48mm), and Dellorto DRLA (36mm, 40mm, 45mm, & 48mm).
• VW Beetle: 1950 through 1979 (Sedan and Convertible).
• VW Karmann Ghia: 1956 through 1974.
• VW Bus / Type 2: 1955 through 1971 (Direct fit for Type 1 upright engine conversions).
• VW Type 3: 1961 through 1973 (Requires specific manifold clearance).
• VW Thing / Type 181: 1973 through 1974.
• Custom Applications: Ideal for Dune Buggies, Sand Rails, Trikes, and kit cars using air-cooled VW powerplants.

SPECS

Every dimension of the EMPI 43-6018-0 is optimized for maximum filtration and structural rigidity.

• Part Number: 43-6018-0
• Base Material: Precision Die-Cast Aluminum for superior seal and heat resistance.
• Filter Type: High-Flow Red Gauze (Washable and Reusable).
• Filter Height: 3.5 Inches (Filter Element).
• Overall Height: Approximately 3 Inches total assembly height.
• Long Dimension: 7 Inches.
• Short Dimension (Width): 3-1/2 Inches.
• Shape: Oval.
• Hardware Included: Zinc-plated mounting bolts and carburetor-to-base gasket.
• Finish: Polished aluminum top with a rugged cast texture base.

PRO TIPS

Tip 1: Pre-Oiling and Maintenance

Because this unit utilizes a gauze-style filter, it is critical to ensure the element is properly oiled before your first long-distance drive. While many come pre-oiled, we recommend checking for "dry spots" in the red media. Use a high-quality air filter oil kit to maintain the element every 5,000 miles, or more frequently if you are running in dusty off-road environments. Never use compressed air to dry the filter after washing, as this can tear the microscopic fibers of the gauze and allow dirt to pass directly into your engine''s venturis.

Tip 2: Verifying Decklid Clearance

If you are installing these on a standard Beetle with a dual-carburetor kit, pay close attention to the height of your intake manifolds. The 3.5-inch height of this filter provides excellent airflow but can sometimes interfere with the underside of the decklid or the rain tray on later-model Bugs. If you experience clearance issues, you may need to utilize decklid standoffs to provide the necessary room