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Description

BMW E90/E92/E93/E82/E88 N55 (11-13) Mishimoto baffled oil catch can

The Mishimoto catch can N55 is a baffled oil catch can for the crankcase ventilation on the CCV side of the BMW 335i, 335xi and 135i with the N55 engine from 2011 to 2013. On a direct-injection engine like the N55, oil vapour from the crankcase ventilation ends up in the intake, where it causes carbon buildup on the intake valves.

The compact 2-port catch can sits in line with the CCV system and separates the oil with an internal air diverter, baffles and a 50-micron bronze filter. This protects the intercooler, intake system and VANOS from oil blow-by and helps maintain proper octane levels to reduce potential detonation. The kit comes with an application-specific bracket, two direct-fit hoses and aluminium barbed fittings. No modification to the engine cover is needed.

Key benefits

• Direct fit for the BMW 335i, 335xi and 135i with the N55 engine (2011-2013)
• Compact 2-port catch can with baffles and a 50-micron bronze filter
• Internal air diverter for better oil separation
• Sealed can made from billet 6061 aluminium
• Application-specific lid with fittings matched to the CCV line size
• Bracket mounts the can in a serviceable location
• Direct-fit hoses, no modification to the engine cover
• Filter and can fully serviceable
• Mishimoto Lifetime Warranty

Fitment

BMW 335i, 335xi and 135i with the N55 engine

• Model years 2011 to 2013
• Engine: N55
• Chassis codes according to Mishimoto: E82, E88, E90, E92 and E93
• Position: CCV side of the crankcase ventilation

Technical specifications

• Manufacturer: Mishimoto
• Part number: MMBCC-N55-11CBE2
• Type: compact 2-port baffled oil catch can
• Material: billet 6061 aluminium
• Filter: bronze, 50 micron
• Barbed fittings: 2 x 3/4 in (19 mm), CNC-machined aluminium
• Hose clamp torque: 2.5 Nm recommended, 3 Nm maximum
• Included: 1 compact baffled oil catch can, 1 application-specific mounting bracket, 2 direct-fit hoses, 2 aluminium 3/4 in barbed fittings, mounting hardware

Installation and delivery

The catch can goes in line with the crankcase ventilation hose on the CCV side and is secured with the supplied bracket. Mishimoto rates the installation as medium. Tighten the worm gear clamps to 2.5 Nm and never above 3 Nm. After installation, check the contents every 1,600 km (1,000 miles) until you know how much oil your engine collects. The level must never rise above the internal baffle. Lead time: 4 to 7 days.

Every drop of oil that stays in the catch can is a drop that does not end up on your intake valves or in your intercooler.

Why choose this Mishimoto catch can N55?

Unlike most air-oil separators (AOS), this catch can is not heated and does not drain the oil back into the sump. All blow-by, including fuel vapours and low-octane oil vapour, condenses in the can and stays there until you empty it. Your intake stays cleaner and the contamination does not return to your engine oil. Mishimoto backs it with a lifetime warranty.

Frequently asked questions

Does the catch can need emptying?

Yes. Mishimoto recommends checking the contents every 1,600 km until you have a baseline. How quickly the Mishimoto catch can N55 fills up depends on ambient temperature and driving conditions.

Is this the same as an air-oil separator?

No. An AOS is usually heated and drains the oil back into the sump. This catch can traps all blow-by and keeps it out of the engine permanently.

Do I need to modify the engine cover?

No. The hoses are direct fit and the engine cover stays as it is.

What is the lead time?

The lead time is 4 to 7 days.

Downloads and documentation

Installation guide Mishimoto catch can N55 (PDF, English)

Delivery outside the European Union: different shipping costs may apply. Don’t worry: we will email you as soon as possible after your order and agree the shipping with you. You are not committed to anything without your consent.