aFe 54-76306 Momentum GT intake combines a Pro 5R oiled filter, molded XLPE housing and twin-outlet intake tube with 6061-T6 aluminum ends for qualified BMW N54 twin-turbo applications. It retains both original inlet connections and the original front scoop, and includes a urethane auxiliary-opening plug.
Preserve all existing named N54 rows: 1 Series M Base 2011; 135i Base 2008-2010; 335i Base 2007-2010; 335i xDrive Base 2009-2010; 335is Base 2011-2013; 335xi Base 2007-2008; 535i Base 2008-2010; 535i xDrive Base 2009-2010; 535xi Base 2008. Current manufacturer specifications identify E9X 335i 2007-2010, E82/E88 135i and E60/E61 535i 2008-2010. The narrower manual cover and its generic 335is year label do not delete exact selected-part retailer-positive 1 Series M 2011 and 335is 2011-2013 rows; the linked dyno itself identifies a 2011 335is. No N55, later chassis or additional endpoint is inferred.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2011 | BMW | 1 Series M | Base |
| 2008-2010 | BMW | 135i | Base |
| 2007-2010 | BMW | 335i | Base |
| 2009-2010 | BMW | 335i xDrive | Base |
| 2011-2013 | BMW | 335is | Base |
| 2007-2008 | BMW | 335xi | Base |
| 2008-2010 | BMW | 535i | Base |
| 2009-2010 | BMW | 535i xDrive | Base |
| 2008 | BMW | 535xi | Base |
Verify 54-76306 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-76306 |
| Product line | Momentum GT cold air intake |
| Selected filter | One 24-90089 Pro 5R; five oiled cotton-gauze layers |
| Filter dimensions | Current replacement oval flange 5.625 x 2.625 inches; height 7.875 inches; overview rounds height to 8 inches |
| Main materials | Molded XLPE housing and plastic tube with 6061-T6 aluminum outlet ends |
| Connections | Two original inlet joints plus filter-flange joint |
| Airflow claim qualification | Manufacturer claims 18% increase; matching flow chart not linked on reviewed page |
| Dyno qualification | Marked separate-rpm differences 15.84 hp / 32.96 lb-ft; run maxima -2.61 hp / +2.76 lb-ft |
| Emissions | Not CARB exempt; manufacturer California purchase/use restriction applies |
| UPC | 802959541500 |
| WARNING | This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov. |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 24-90089 | Selected Pro 5R oiled filter |
| 1 | 05-76306B2 | Molded housing with inspection window |
| 1 | 05-76306B1 | Twin-outlet tube with aluminum ends |
| 1 | 05-01225 | Optional urethane auxiliary-opening plug |
| 1 | Service number not stated in bill | Filter-flange stainless T-bolt clamp, illustrated and specified in procedure |
The dry filter in the shared bill is a separate version. Retain both factory inlet clamps, original front scoop and two T20 screws, one lower airbox grommet and the original CCV connection. The three clamp joints comprise two original inlet joints and the filter-flange joint; no new silicone couplers or sensor hardware are itemized. The rear mounting clips are molded into the housing and do not require invented mounting screws. Three rear wire harnesses are released during removal; retain their safe original routing. No replacement sensor, MAF-transfer hardware or tuning module is supplied.
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
One 24-90089 Pro 5R oiled filter with five cotton-gauze layers. Current replacement height is 7.875 inches, rounded to 8 inches in the overview.
Are 1 Series M and 335is rows retained?Yes. Exact selected-part retailer tables support 1 Series M 2011 and 335is 2011-2013, and the linked test identifies a 2011 335is. These remain qualified to the actual N54 configuration.
Is the entire intake tube aluminum?The main tube is molded plastic, with 6061-T6 aluminum ends at its two outlets.
How does the housing mount?Its two rear molded clips slide over original manifold posts, and the front snaps onto its original mount using the transferred lower grommet.
What happens to the original front scoop?Retain it during removal and reinstall it with the same two T20 screws.
How is the CCV line handled?Squeeze the fitting sides and lift straight up, hold the line aside without kinking it, then reconnect it after intake installation.
Do the dyno peaks show 16 hp and 30 lb-ft gains?No. The run maxima show 2.61 hp less and 2.76 lb-ft more. Larger advertised values refer to low-rpm point differences under the disclosed test conditions.
What torque and follow-up checks apply?Secure all three clamp joints without overtightening and retighten connections after approximately 100-200 miles. No numeric torque is stated in the exact manual.
Verify aFe 54-76306. Read all sixteen pages and figures A-K. Work on a cool engine and disconnect the negative battery terminal. Release the CCV fitting by squeezing its sides and lifting straight up; hold the line aside without kinking it. Remove the original scoop with its two T20 screws and retain them. Loosen both original inlet clamps, including the rear clamp beneath the cowl, and release the three rear wire harnesses. Lift the airbox from its three mounts and transfer one lower grommet. Lock the selected filter into the new housing and fit its stainless T-bolt clamp loosely. Install the original grommet in the lower housing hole. Engage both rear housing clips over the original manifold mounting posts, then snap the front mount into place. Insert both tube ends into the original inlets first, then rotate the tube into the filter. Secure all three clamp joints without overtightening. Restore the front scoop and its two screws, reconnect the CCV fitting and choose whether to install the auxiliary-opening plug. Verify safe harness routing and secure connections. Retighten connections after approximately 100-200 miles. The exact manual provides no numeric torque.
No flow chart was linked on the reviewed current page, so its 18-percent airflow claim lacks the matching test basis here. The linked dyno identifies a 2011 E92 335is and the selected intake V2. Its separately marked differences are 180.95 versus 165.11 hp and 376.67 versus 343.71 lb-ft at different low-rpm points; these are not one common-rpm measurement. Run maxima are 307.04 versus 309.65 hp and 396.83 versus 394.07 lb-ft, showing a 2.61-hp decrease and 2.76-lb-ft increase between peaks. Advertised 16 hp / 30 lb-ft therefore must not be presented as peak-to-peak gains. July 16 and 22, 2015 tests use SAE 1.04, original headers and exhaust, fifth gear from 1,500-6,700 rpm, DTC fully off and a 50/50 blend of 100- and 91-octane gasoline. Baseline notes a JP4 level-0 tune while the intake run notes JB4 level 0; their equivalence is not independently established. Weather also differs. These conditions limit generalization. Current manufacturer California restrictions apply; older manual race-use wording is not a current street exemption. Turn14 access is unavailable and prices remain unchanged.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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