Racingline Oil Catch Can System Audi S4/S5 (B9) 3.0TFSI V6T EA839

Racingline Oil Catch Can System – Audi S4/S5 (B9) 3.0 TFSI V6T EA839

The Racingline Oil Catch Can System is a direct upgrade for the supercharged 3.0 TFSI EA839 engine found in the Audi S4 and S5 (B9). It captures the oil vapour and moisture that would otherwise be drawn back into your intake, keeping your intercooler, inlet tracts and inlet manifold clean over the long term.

On modern direct-injection engines like the EA839, fuel no longer washes over the back of the inlet valves. That means any oil vapour passing through the crankcase ventilation (PCV) system gradually coats the intake with sticky residue. Over time, this can reduce airflow and affect performance. A quality catch can system is one of the most worthwhile preventative upgrades you can fit.

What it does

The system is a complete PCV replacement, not just a bolt-on tank. It removes the factory plastic PCV assembly (which contains a check valve known to fail) and replaces it with a billet aluminium breather plate topped with a CNC-machined oil filler cap. Oil vapour is then routed through two internally-baffled separator turrets and into a three-way baffled catch tank, where moisture and oil drop out before clean air returns to the inlet.

Key benefits

• Prevents oil residue building up in the intercooler, charge pipes and inlet manifold
• Replaces the failure-prone factory PCV check valve
• Three-way baffled tank for effective separation of oil and moisture
• Integrated dipstick for quick level checks and easy disassembly for cleaning
• Tidy, factory-style installation at the rear of the engine bay, with a retained engine cover mount

Build quality and finish

The catch tank is machined from extruded aluminium and finished in Racingline’s signature ‘Liquid Titanium’ anodised coating. The pressed-aluminium mounting brackets locate the can securely at the rear of the engine and include a point to retain the factory engine cover, so the installation looks like it belongs there.

What’s included

• Replacement PCV breather plate with billet oil filler cap
• 2 x internally-baffled separator turrets
• Baffled catch tank with oil dipstick
• 2 x catch can mounting brackets
• 2 x -6AN hoses from separator turrets to catch can
• Norma breather return hose from catch can to inlet
• Fixing kit with all required bolts and O-rings

Fitment

Designed specifically for the 3.0 TFSI V6T EA839 supercharged engine fitted to the Audi S4 and S5 (B9). Please use the vehicle lookup or check the Vehicle Fitment tab to confirm compatibility with your exact model and year before ordering.

Maintenance note

A catch can is only effective if it is emptied regularly. Check the level using the integrated dipstick at every service interval, or more frequently if the car is driven hard, and empty as required.

Progressive Parts is an authorised UK dealer for Racingline Performance. Racingline develop and test their parts in motorsport before refining them for road use, so you get hardware that is built to last and engineered specifically for the VW Group platforms it fits.

Applications

Please note, customers are wholly responsible for checking fitment for their vehicle.