Rein ABV0256 Engine Crankcase Breather Hose

OE Breather Hose for Audi Crankcase Ventilation

The Rein ABV0256 engine crankcase breather hose is an OE-quality replacement for select Audi A4, A4 Quattro, A6, and A6 Quattro applications. It matches original equipment design specifications and is built for direct fitment, making it a practical choice for restoring crankcase ventilation performance on 2003-2004 Audi models.

Key Features

• Matches original equipment design specifications.
• Manufactured with high quality materials.
• Direct fit for easy installation.
• Resistant to heat, salt, road debris, oil, and other contaminants.
• OE-quality replacement for the original breather hose.

Detailed Product Overview

Rein ABV0256 is an engine crankcase breather hose engineered as a direct replacement for the OE part. It is identical to the OEM in form, fit, and function, and is built for European vehicles where precise crankcase ventilation routing matters. This breather hose is a strong match for Audi A4 and Audi A4 Quattro models from 2003, plus Audi A6, Audi A6 Quattro, and 2004 Audi A6 applications. For buyers searching for an Audi breather hose replacement or a Rein ABV0256 crankcase ventilation hose, this part provides the correct OE-style fit for the listed vehicles.

This part cross-references OE number 06C103235A for the same application.

Common Problems This Part Addresses

• Cracked or brittle breather hose material.
• Oil vapor leaks in the crankcase ventilation system.
• Vacuum loss caused by a damaged hose connection.
• Contamination from heat, road debris, salt, and oil exposure.
• Improper routing or fit from a worn original hose.

Installation Notes and Tips

Verify the vehicle VIN before ordering, especially for 2003 Audi A4, A4 Quattro, and A6 applications with VIN breakpoints listed in fitment. Confirm the hose routing and connection points against the original part before installation. Because this is a direct-fit replacement, installation follows the OE layout on the applicable Audi crankcase ventilation system.

Quality Assurance

Rein Automotive supplies OE-quality breather hoses for European vehicles, with replacement parts built to match the original manufacturer’s design and function. ABV0256 includes a 24-month or 24,000-mile warranty.

Compatible Vehicles

• Fits 2004 Audi A6, N/A.
• Fits 2004 Audi A6 Quattro, N/A.
• Fits 2003 Audi A4, N/A, from VIN 8E3325001.
• Fits 2003 Audi A4, N/A, from VIN 8H3020001.
• Fits 2003 Audi A4 Quattro, N/A, from VIN 8E3325001.
• Fits 2003 Audi A6, N/A, from VIN 4B3075001.
• Fits 2003 Audi A6 Quattro, N/A, from VIN 4B3075001.