ECS Tuning Baffled Oil Catch Can/Catch Tank Kit for BMW E46 M3 (S54 3.2, 2001-2006) - PCV Oil Vapor/Vapour Separator, Crankcase Breather, Blow-By Filter, Direct-Fit Bolt-On

ECS Tuning S54 Catch Tank Upgrade for BMW M3 E46 2001 to 2006

Keep your high-revving straight-six cleaner, drier and happier. This ECS Tuning baffled catch tank assembly captures oil mist and moisture from crankcase gases before they reach the intake, helping to minimise carbon build-up, reduce residue on intake components and promote stable crankcase ventilation on both fast-road and track day cars. If you are searching for an E46 M3 S54 oil vapour separator, breather tank kit, PCV canister or blow-by filter for the BMW 3.2, this is the proven, vehicle-specific solution enthusiasts choose.

Why your S54 benefits

The S54 is known for oil vapour and condensation returning to the inlet tract, particularly on short journeys and in colder weather. A properly designed, baffled catch tank reduces oil carryover, helps keep valves and runners cleaner, and supports long-term engine health. Expect a tidier induction system, fewer deposits and consistent breathing performance on spirited road driving and circuit use alike.

Highlights

• Four-stage internal baffle stack for highly effective oil and air separation
• Engineered flow path forces multiple direction changes so droplets fall out of suspension before the outlet
• Knurled, black anodised dipstick for quick, clean level checks
• Fully serviceable design with removable baffle plates for easy cleaning
• Supplied 2.5 mm Allen key for baffle service
• -10AN ORB ports with O-ring sealing for secure, leak-resistant connections
• Billet 6061-T6 aluminium canister with a durable black anodised finish
• Quick-drain lower reservoir unscrews for fast emptying
• Model-specific mount in the passenger-side smuggler’s compartment for a neat, OE-style install
• Reversible fitment if you ever decide to return the car to standard
• Engineered and manufactured in the USA by ECS Tuning

Compatibility

BMW E46 M3 with the S54 3.2 petrol engine, model years 2001 to 2006. Also commonly searched as BMW M3 E46 catch tank kit, S54 oil vapour separator, PCV breather can and crankcase oil mist trap.

Our experience

We have fitted this ECS Tuning S54 catch tank on customer cars and our own builds at MJ Modifications. Feedback has been excellent, with noticeably cleaner intake components and reduced oil residue. Owners love the factory-style mounting, quality machining and how straightforward the serviceable design makes routine maintenance.

Fitting and support

Designed to bolt up in the factory bay location for a tidy, stock-look installation. For professional fitting, book in with MJ Modifications in Warwickshire. Request a quote via info@mjmodifications.co.uk and our team will be happy to help.

Maintenance

Check the dipstick periodically and drain the lower reservoir as needed, especially if the car sees short trips or winter use. The removable baffle plates can be cleaned with the supplied 2.5 mm Allen key to keep separation efficiency at its best.

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