Rein CPL0046 Engine Oil Filler Cap

OE Oil Cap for European Engines

The Rein CPL0046 engine oil filler cap is an OE-quality replacement for European vehicles that need a precise, direct-fit seal at the oil fill opening. Built to match the original cap’s function and material standards, it helps keep the engine oil system protected on Audi and Volkswagen applications.

Fits 2014-2026 Audi A3, A3 Quattro, A4, A4 allroad, A4 Quattro, A5, A5 Quattro, A5 Sportback, A6, A6 Quattro, Q3, Q5, Q5 PHEV, Q7, RS3, S3, TT, TT Quattro, TT RS Quattro, TTS Quattro, and Volkswagen Arteon, Atlas, Atlas Cross Sport, Beetle, Golf, Golf Alltrack, Golf R, Golf SportWagen, GTI, Jetta, Passat, and Tiguan, depending on model year and engine configuration.

• Direct-fit replacement for the original oil filler cap
• Helps prevent moisture and debris from entering the engine oil system
• Manufactured to strict engineering standards for materials and tolerances
• Produced by an original equipment supplier
• OE-quality construction for European vehicle applications

Detailed Product Information

Rein CPL0046 is designed for drivers and technicians who need a dependable replacement oil cap for Audi and Volkswagen engines. It is application-specific, with fitment covering a wide range of turbocharged and standard European models, including Audi RS3, Q3, Q5, TT Quattro, TTS Quattro, and Volkswagen Jetta, Passat, Atlas, and GTI. The cap is engineered to match OE dimensions and sealing requirements so it installs in the factory location without modification.

This part cross-references 06K103485C and 06K103485D for the same application.

Common Problems It Can Address

• Broken, cracked, or missing oil filler cap
• Oil fill opening exposed to dirt, dust, or moisture
• Loose cap fitment that does not seal correctly
• Oil service concerns caused by a worn OE cap
• Need for an OE-style replacement on Audi and Volkswagen engines

Installation Notes and Tips

Verify the part number and vehicle application before installation, especially on 2020 model-year vehicles with date-specific fitment notes. Inspect the oil fill neck and sealing surface for damage or contamination before installing the new cap. Confirm the cap seats fully and locks or threads in place as designed for the application.

Quality Assurance

Rein manufactures this oil cap to OE-quality standards and supplies it as a direct replacement for the original component. Part number CPL0046 is built to match or exceed the materials and tolerances used in the factory cap. Warranty coverage is 24 months or 24,000 miles.