aFe Magnum FORCE Stage-2 Si cold air intake system with a one-piece sealed plastic housing that keeps out warm underhood air and draws cooler outside air through dual kidney-style auxiliary inlet ducts. A CAD-designed roto-molded plastic intake tube replaces the factory intake tract and feeds a 6 inch conical inverted-top Pro 5R filter with five-layer progressive oiled cotton media. A vacuum formed ABS plastic black cover seals the top of the housing and comes off for filter service. The system outflows the factory intake by 56%, adds up to 12 hp and 16 lb-ft, and mounts in the factory locations with no cutting or drilling.
Specifications
| Type | Cold Air Intake System |
| Series | Magnum FORCE Stage-2 Si |
| Filter Media | Pro 5R, five-layer oiled cotton gauze, washable and reusable |
| Housing / Tube | One-piece sealed plastic housing with dual kidney-style auxiliary air inlet ducts; roto-molded plastic intake tube |
| Cover | Vacuum formed ABS plastic, black |
| Gains | +12 hp, +16 lb-ft; 56% more airflow than the factory intake |
| What's in the Box |
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| Install | Mounts in the factory locations; no cutting or drilling |
| Fitment Notes | 3.0L N52 non-turbo engine in the E82/E88 1 Series and E90/E91/E92/E93 3 Series only; fits models with active or non-active steering. Does not fit LEV2 SULEV engine test groups 7BMXV03.0N51, 8BMXV03.0N51, 9BMXV03.0N51, ABMXV03.051R, BBMXV03.051R, CBMXV03.0N51R and DBMXV03.051R |
| Replacement Filter | 24-91054 (Pro 5R), 6 in flange x 7-1/2 in base x 5-1/2 in inverted top x 5 in tall |
| Emissions | Covered by CARB Executive Order D-550-38 for the 2006 325i and 330i and the 2007-2013 328i 3.0L, excluding the SULEV engine test groups above |
| Engine | L6-3.0L N52 Engine |
| Filter Color | Blue |
| Hardware Included | Yes |
| Air Flow Gain | 56 Percent |
| Pre-Filter | 28-10093 |
| Air Box Type | Closed |
| Heat Shield Included | Yes |
| Tune Required | No |
| Warranty | 2 years on components (original owner) |
| Part Number | 54-81012-B |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2008-2013 | BMW | 128i | Base |
| 2006 | BMW | 325i | Base |
| 2006 | BMW | 325xi | Base |
| 2007-2013 | BMW | 328i | Base |
| 2009-2013 | BMW | 328i xDrive | Base |
| 2007-2008 | BMW | 328xi | Base |
| 2006 | BMW | 330i | Base |
| 2006 | BMW | 330xi | Base |
Documents: Installation Instructions (PDF) | Dyno Chart | Filter Cleaning Instructions
Will it fit my 335i or 335d?
- No. This kit is for the 3.0L N52 non-turbo engine in the 2008-2013 128i and the 2006-2013 3 Series 325i, 328i and 330i, including the xi and xDrive versions in the fitment list. The turbo 335i, 335is and the 335d diesel are not covered.
Does it fit a SULEV (N51) engine?
- No. It does not fit the LEV2 SULEV engine test groups 7BMXV03.0N51, 8BMXV03.0N51, 9BMXV03.0N51, ABMXV03.051R, BBMXV03.051R, CBMXV03.0N51R and DBMXV03.051R. Check the engine test group on the emissions label under the hood.
Is it legal in California?
- It is covered by CARB Executive Order D-550-38 for the 2006 325i and 330i and the 2007-2013 328i 3.0L, excluding the SULEV engine test groups. The 128i is not listed in that order.
What comes in the box?
- The Pro 5R filter, intake tube, sealed housing, black cover, silicone bellow coupling, two clamps, a brass fitting and plug for the crankcase breather port, and the mounting screws, washers and grommets.
How do I service the filter?
- The Pro 5R filter is washable and reusable; cleaning instructions are linked under Documents, and the replacement filter is part number 24-91054 (Pro 5R).
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
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