aFe 54-76313 Momentum GT intake uses a Pro 5R oiled filter, molded housing and molded tube for qualified N55-powered BMW 135i, E9X 335i and X1 applications. The original flexible coupling remains installed, and the original rear bracket and its three wire attachments transfer to the new housing.
Existing named ranges remain 135i Base 2011-2013, 335i Base 2011-2013, 335i xDrive Base 2011-2013 and X1 xDrive35i 2013-2015. Manufacturer 135i chassis are E82/E88; 335i chassis are E90/E92/E93, with N55 3.0L turbo engines. A 2012-2013 335i model name alone does not establish the E9X body: confirm chassis before ordering. The manual generic X1 2011-2015 entry does not extend the existing US xDrive35i start beyond the current manufacturer 2013 start. No 135is, N54, later F-chassis or other engine application is inferred.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2011-2013 | BMW | 135i | Base |
| 2011-2013 | BMW | 335i | Base |
| 2011-2013 | BMW | 335i xDrive | Base |
| 2013-2015 | BMW | X1 | xDrive35i |
Verify 54-76313 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-76313 |
| Product line | Momentum GT cold air intake |
| Selected filter | One 24-90089 Pro 5R; five oiled cotton-gauze layers |
| Filter dimensions qualification | Current replacement flange 5.625 x 2.625 inches; height 7.875 inches; overview 9-inch/other oval dimensions conflict |
| Housing / tube | Molded XLPE housing / molded plastic tube |
| Bench flow | Actual chart 186 versus stock 147 CFM at 1.5 inches H2O; approximately 26.5% |
| Other airflow rating | Current 400-CFM text uses 7 inches H2O; no matching comparison chart at that pressure reviewed |
| Dyno qualification | Marked 4,400-rpm difference 11.77 hp / 14.02 lb-ft; peak-to-peak 3.09 hp / 3.73 lb-ft |
| Emissions | Not CARB exempt; current manufacturer California purchase/use restriction applies |
| UPC | 802959543429 |
| 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 | 05-76313B2 | Molded housing with inspection window |
| 1 | 05-76313B1 | Molded intake tube |
| 2 | 03-50490 | M4 Torx sensor screws; length not stated |
| 1 | 05-01225 | Optional urethane auxiliary-opening plug |
The dry filter in the shared bill belongs to another version. The illustrated filter-flange clamp is used with the retained original flexible-coupling clamp. Retain the original flexible coupling, original MAF sensor, three bottom mounting grommets, original rear metal bracket and screws, inlet duct and all three wire attachments. No new silicone coupling, replacement sensor, tuning module or extra bracket is itemized. The current replacement-filter dimensions differ from the generic overview; confirm the actual filter and housing revision.
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 element with five cotton-gauze layers. The dry element in the shared bill belongs to another version.
Does every 2012-2013 335i body qualify?No. The reviewed manufacturer 335i application specifies E90/E92/E93 N55. Confirm the actual chassis rather than using the model name alone.
Is the original flexible coupling replaced?No. The manual leaves it and its clamp in place, then inserts the new tube into that original coupling.
Which housing mounts are transferred?All three original bottom grommets, plus the rear metal bracket and its original screws.
What happens to the three wire attachments?Release them from the original rear bracket and restore each to its corresponding position after the bracket and housing are installed.
Which MAF screws are used?Use the two supplied M4 Torx screws and preserve sensor orientation. The manual does not state screw length.
Are the advertised gains peak-to-peak?No. The marked point differs by 11.77 hp and 14.02 lb-ft, while run maxima differ by 3.09 hp and 3.73 lb-ft. Both tests also use modified exhaust and an aftermarket intercooler.
What tightening and follow-up checks apply?Secure the filter and retained coupling clamps and check every connection. Recheck bolts, clamps and connectors after 100-200 miles; no numeric torque is stated.
Verify aFe 54-76313. Read all twelve pages and figures A-G. Work on a cool engine and disconnect the negative battery terminal as directed. Loosen the original flexible-coupling clamp near the MAF and leave the coupling and clamp in position. Release the four airbox clips without losing them, unplug the MAF and remove the upper airbox/tube assembly and filter. Release the three wires from the rear bracket, lift the lower airbox off its three posts and detach it from the inlet duct. Transfer all three bottom grommets and the rear bracket with original screws. Transfer the MAF in its original orientation, replacing its screws with the supplied M4 fasteners. Align the housing with the inlet duct before pressing it onto the three mounts; keep the bracket on the correct side of the wires and restore all three attachments. Seat the filter until its tabs click and gently pull to check retention. Insert the tube into the retained flexible coupling first and then into the filter, reconnect the MAF and secure both clamps. Check all connections and electrical plugs, and fit the optional housing plug if desired. Recheck bolts, clamps and connectors after 100-200 miles. The manual provides no numeric tightening torque.
The linked selected-part flow chart shows 186 versus stock 147 CFM at 1.5 inches H2O, about 26.5 percent above stock. The separate 400-CFM rating uses a stated 7-inch pressure and is not verified by that chart. The 98.6-percent efficiency claim lacks its underlying report. At 4,400 rpm the linked dyno shows 260.88 versus 249.11 hp and 311.41 versus 297.39 lb-ft. Run maxima differ by 3.09 hp and 3.73 lb-ft, so advertised 12 hp / 14 lb-ft represent point-gain claims. Both July 12, 2017 runs show SAE 1.02, BMW Performance exhaust, an aftermarket intercooler, no tune/module, fourth gear, 1,500-7,000 rpm and 20-percent load. These modifications and conditions limit generalization to a stock vehicle. No independent model year is established by the chart. Current manufacturer California restrictions apply; older manual race-use wording is not a current street exemption. Turn14 access is unavailable; 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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