Billet Oil Breather, with Dual Filters, 3 Port Bolt On

OVERVIEW

When you are pushing a high-performance air-cooled Volkswagen engine to its limits, crankcase pressure becomes the silent enemy of your oil seals and gaskets. The EMPI Billet Oil Breather System is engineered to combat this build-up by providing an expansive, high-volume atmospheric vent that allows your engine to breathe freely. Unlike restrictive stock setups or cheap plastic alternatives, this unit is precision-machined from high-quality billet aluminum, offering a substantial internal volume that slows down exiting air, allowing oil vapor to condense and drain back into the block rather than spraying all over your engine bay. Whether you are running a high-compression street engine or a high-revving sand rail, this 3-port system ensures that internal pressure doesn''t result in the dreaded main seal leak or "pushed" pushrod tube seals.

Form meets function with a stunning polished finish that serves as the perfect centerpiece for any show-quality engine compartment. The dual-filter design maximizes airflow capacity while the 9-1/2 inch wide profile provides a stable, bolt-on mounting solution that stays secure even in the harshest off-road environments. This kit is specifically designed for the enthusiast who demands durability; the 3/8 NPT ports allow for secure, leak-free plumbing to your valve covers and crankcase. By utilizing dual washable filters, you get the benefit of superior filtration and easy maintenance, ensuring that your engine remains protected from outside contaminants while venting internal gases efficiently. This isn''t just an accessory; it''s a vital component for engine longevity in any performance VW application.

FITMENT

• Volkswagen Type 1 Beetle: All years and models equipped with upright air-cooled engines.
• Volkswagen Type 2 Bus / Transporter: 1950-1971 (Upright engines).
• Volkswagen Karmann Ghia: 1956-1974.
• Volkswagen Type 3 (Squareback, Fastback, Notchback): When converted to upright cooling.
• Volkswagen Thing (Type 181): 1973-1974.
• Custom Applications: Ideal for Dune Buggies, Sand Rails, Trikes, and Manx-style kit cars.
• Engine Compatibility: Works with 1600cc, 1776cc, 1835cc, 1914cc, 2110cc, 2275cc, and larger displacements.

SPECS

• Material: CNC Machined Billet Aluminum.
• Finish: High-Luster Polished Mirror Finish.
• Width: 9-1/2 Inches (Total Assembly).
• Port Configuration: 3x 3/8 Inch NPT Threaded Ports.
• Filter Type: Dual High-Flow Gauze Filters (Washable/Reusable).
• Mounting Style: Bolt-on bracket system for secure installation.
• Weight: Approximately 2.34 lbs.
• Includes: Billet breather box, two filters, and internal baffling.

PRO TIPS

Optimize Your Hose Routing

To get the most out of your EMPI Billet Breather, always ensure that your breather hoses (typically running from the valve covers and the oil filler) maintain a consistent upward slope toward the breather box. If a hose has a "sag" or a low spot, oil vapor will condense and pool in that area, eventually creating a "trap" that blocks airflow and causes pressure to spike. By mounting the breather box at the highest point possible in the engine bay, you allow condensed oil to gravity-drain back into the engine, keeping the filters cleaner and the system functioning at peak efficiency.

Seal the NPT Threads Properly

The 3/8 NPT ports on this billet unit are tapered, which means they seal by thread interference. When installing your fittings, use a high-quality thread sealant or a small amount of Teflon tape, but be extremely careful not to wrap the tape over the end of the fitting. If small pieces of tape break off inside the breather, they can travel back into your oil system and potentially clog an oil galley. Always leave the first two threads of the fitting bare to ensure a clean, safe seal that won''t contaminate your engine''s lubrication path.

Maintain Filters for Consistent Performance

While the dual filters are designed to last, they will eventually become saturated with oil mist and dust, especially in off-road environments. A clogged filter creates backpressure, which defeats the entire purpose of the breather system. We recommend checking the filters every time you change your oil. If they appear dark or greasy, wash them in a mild degreaser, rinse them from the inside out with low-pressure water, and let them air dry completely before re-installation. This simple maintenance step ensures your engine can always "exhale" without resistance.