aFe Magnum FORCE Stage-2 Carbon Fibre Cold Air Intake
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aFe Magnum FORCE Stage-2 Carbon Fibre Cold Air Intake - BMW M3 (E9X) - 4.0L V8 S65
The aFe Magnum FORCE Stage-2 Carbon Fibre kit suits the E9X BMW M3 with the 4.0L S65 V8. It keeps the factory airbox, which seals the filter and tube from engine bay heat, and replaces the factory filter and intake tube with a uniquely shaped filter that fills the airbox and a high-gloss twill weave carbon fibre tube.
The oval filter measures 9-1/4 x 5-1/4 in (235 x 133mm) on top, stands 5 in (127mm) tall and flows 41% more than the factory element, according to aFe. aFe's dyno testing shows up to +9 kW (+12 hp) and +12 Nm. A billet aluminium adaptor reconnects the factory secondary air pump fitting.
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. aFe's pages describe the same carbon fibre tube kit for both the 'Carbon Fibre' and 'Standard' part numbers.
Note: Suits the 2008-2013 E9X M3 with the S65 V8. Installation by a professional is recommended.
Features
- Twill weave carbon fibre intake tube
- Filter shaped to fill the factory airbox
- Uses the factory airbox for a sealed cold air path
- Billet aluminium adaptor for the factory air pump fitting
- Lighter than the factory tube
- Direct bolt-on with no cutting or drilling
Pairs Well With
- aFe Magnum FORCE Stage-2 Si Cold Air Intake - BMW M3 (E9X) - 4.0L V8 S65
- Armytrix Front Pipes & X-Pipe - BMW M3 (E90 / E92 / E93)
- Armytrix Valvetronic Cat-Back Exhaust - BMW M3 (E90 / E92 / E93)
Need help choosing an intake for your M3? Contact our team at sales@chicaneaustralia.com.au.
Product
- Brand
- aFe Power
- Part number(s)
- 51-31662-C (Pro DRY S / Carbon Fibre), 51-31662 (Pro DRY S / Standard), 54-31662-C (Pro 5R / Carbon Fibre), 54-31662 (Pro 5R / Standard)
Details
- Product
- Cold air intake
- Product line
- Magnum FORCE Stage-2
- Engine
- 4.0L S65 V8
- Intake tube
- Twill weave carbon fibre, clear-coated
- Housing
- Factory airbox (retained)
- Filter
- Oval, 9-1/4 x 5-1/4 in (235 x 133mm) top, 5 in (127mm) tall
- Filter media options
- Pro DRY S (oil-free synthetic), Pro 5R (oiled cotton gauze)
- Power gain
- +9 kW (+12 hp)
- Torque gain
- +12 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 carbon fibre intake tube
- 2 x clamps
- 1 x hump coupling
- 1 x billet aluminium air pump adaptor
- 1 x rubber grommet
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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