aFe Magnum FORCE Stage-2 Cold Air Intake
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aFe Magnum FORCE Stage-2 Cold Air Intake - BMW 335i (E9X) - 3.0L Turbo N55 MY11-13
The aFe Magnum FORCE Stage-2 suits the 2011-2013 E9X BMW 335i with the 3.0L N55 turbo six. It keeps the factory airbox and replaces the filter element and intake tube with a 5 in (127mm) tall 360-degree radial filter and a computer-designed, dyno-tuned roto-moulded tube.
aFe's dyno testing shows up to +11.9 kW (+16 hp) and +35 Nm with 32% more airflow than the factory intake. It is a direct bolt-on kit with no cutting or drilling, and aFe sells a matching Magnum FORCE intake cover (54-31918-B) separately.
Options: Pro DRY S is a dry, oil-free three-layer synthetic media that cleans with soap and water. Pro 5R is a five-layer oiled cotton gauze media, each layer finer than the last, for the most airflow. Both versions make the same power and torque on aFe's dyno.
Note: Suits the 2011-2013 335i with the N55; aFe also lists the E82/E88 135i (2011-2013) and the E84 X1 35i. Installation by a professional is recommended.
Features
- 5 in tall 360-degree radial flow filter
- Computer-designed, dyno-tuned roto-moulded tube
- Direct bolt-on kit with no cutting or drilling
- Short parts list for a quick fit
- Matching intake cover available separately
- Washable, reusable filter
Pairs Well With
- aFe Momentum GT Cold Air Intake - BMW 335i (E9X) / 135i (E82) - 3.0L Turbo N55
- aFe Magnum FORCE Stage-2 Cold Air Intake - BMW 335i (E9X) - 3.0L Turbo N55 MY11-15
Need help choosing an intake for your 335i? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- aFe Power
- Part number(s)
- 51-31912 (Pro DRY S), 54-31912 (Pro 5R)
Details
- Product
- Cold air intake
- Product line
- Magnum FORCE Stage-2
- Intake tube
- Roto-moulded plastic, dyno-tuned
- Filter
- Conical radial flow, 5 in (127mm) tall
- Filter media options
- Pro DRY S (oil-free synthetic), Pro 5R (oiled cotton gauze)
- Airflow gain
- +32%
- Power gain
- +11.9 kW (+16 hp)
- Torque gain
- +35 Nm
- Filter included
- Yes
- Coupler included
- Yes
Contents
- 1 x air filter (Pro DRY S or Pro 5R, to suit the version ordered)
- 1 x intake tube
- 2 x M4 screws
Vehicle fitment
Universal fit: this part suits any car. Check the specifications above for sizes and fittings.
| Make | Model | Chassis | Years | Versions | Engine | Brakes | Position |
|---|
Can’t see your car? Ask us and we’ll check fitment for you.

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