Trans/Air 301712 Micro-Channel Condenser Coil (3-Fan) | Aluminum MCHX Replacement Core | Fits Bus & Shuttle HVAC | Fixes Leaking & Corroded Coils | Lippert Components

Stop the Leaks in Your 3-Fan Condenser.The Trans/Air 301712 is an OEM Micro-Channel (MCHX) condenser coil found in heavy-duty 3-Fan A/C Units. Used extensively on shuttle buses, paratransit vehicles, and school buses, these coils are the heat exchangers responsible for dumping heat out of the bus.Why Replace? If your A/C system won't hold a charge, your condenser coil is the likely culprit. Located outside the vehicle, it is a magnet for road debris and corrosion. Because Micro-Channel coils are nearly impossible to patch reliably, installing a fresh 301712 Core is the standard repair to get the bus back on the road.Fitment Warning: Trans/Air manufactures several different 3-Fan coils (e.g., 301618 vs. 301712). While they look similar, they are NOT interchangeable. Please inspect the white Tyvek tag on your existing coil or contact Trans/Air with your unit serial number to confirm you need the 301712.Technical Specifications: Type: Micro-Channel (Aluminum) Configuration: 3-Fan Manufacturer: Trans/Air (Lippert)

• FIXES LEAKING 3-FAN UNITS: Genuine Trans/Air 301712. The specific aluminum replacement coil for designated Trans/Air **3-Fan** condenser assemblies. Restores system pressure when the original coil fails due to rock hits, vibration, or road salt corrosion.
• MICRO-CHANNEL (MCHX) TECHNOLOGY: Features the modern "All-Aluminum" brazed construction. NOTE: MCHX coils are extremely difficult to repair or weld once punctured. Full replacement is the only reliable fix to prevent refrigerant loss.
• CRITICAL FITMENT NOTE (CHECK YOUR LABEL): Trans/Air makes multiple "3-Fan" coils that look similar but have different dimensions/port locations. **You must verify your existing coil tag reads "301712"** or cross-references to this specific number before ordering.
• CORROSION RESISTANT DESIGN: Replaces older copper/steel coils or damaged aluminum cores. Essential for Skirt-Mounted condensers on Shuttle Buses and Paratransit vans exposed to winter road salts.
• OEM LIPPERT / TRANS/AIR: Direct factory replacement ensuring the mounting holes and manifold connections align perfectly with your existing 3-fan housing.