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aFe 54-76315 Momentum GT intake uses a Pro 5R oiled filter, molded polyethylene housing and molded plastic tube for qualified BMW Z4 E89 N20 applications. It replaces the airbox and its attached tube while retaining the downstream original intake tube and clamp.
The existing US named row remains BMW Z4 sDrive28i 2012-2016 with the 2.0L turbo N20 engine. The exact manufacturer manual separately identifies 28i 2012-2016, 18i 2013-2016 and 20i 2011-2016, including sDrive models. Its earliest 2011 family start belongs to 20i and does not extend the original sDrive28i row. No xDrive or additional named US trim is inferred from older retailer title shorthand.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2012-2016 | BMW | Z4 | sDrive28i |
Verify 54-76315 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-76315 |
| Product line | Momentum GT cold air intake |
| Filter | One 24-91073 Pro 5R; five oiled cotton-gauze layers |
| Filter size | 4-inch flange; 6.5-inch height |
| Main housing / tube | Black molded XLPE housing / molded plastic tube |
| Trim qualification | Exact selected-part retailer carbon-fiber cover overlay; verify actual revision |
| Bench-flow qualification | Linked selected-media chart 434 versus stock 188 CFM at 7 inches H2O; differs from current 400-CFM / 102-percent text |
| Dyno qualification | Marked 3,750-rpm difference 6.92 hp / 9.69 lb-ft; run-maxima difference 3.96 hp / 4.66 lb-ft |
| Emissions | Not CARB exempt; current California purchase/use restriction applies |
| UPC | 802959543467 |
| 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 | 24-91073 | Selected Pro 5R oiled air filter |
| 1 | 05-76315B1 | Molded intake tube |
| 1 | 05-76315B2 | Molded housing with inspection window |
| 2 | 03-50489 | M4 Torx sensor screws; length not stated |
| 1 | 03-50266 | T-bolt housing/filter clamp |
The shared bill lists the dry filter as another version. Its exploded view and installation also show the filter-to-tube clamp; the original downstream intake clamp is retained. The exact bill does not itemize a new silicone coupler, MAF extension, separate auxiliary plug or replacement sensor, despite generic premium-hardware descriptions. Retain the original MAF sensor, two airbox grommets, two mounting bolts, downstream tube and clamp, and original inlet duct. Carbon-fiber trim wording in exact retailer descriptions refers to an overlay, not an all-carbon housing or tube.
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 24-91073 Pro 5R filter with five oiled cotton-gauze layers, a 4-inch flange and 6.5-inch height.
Does the 2011 family headline extend sDrive28i fitment?No. The exact manual starts 28i in 2012; its 2011 entry belongs to 20i. The existing sDrive28i 2012-2016 row remains unchanged.
Is this a complete carbon-fiber intake?The main housing is molded polyethylene and the tube is molded plastic. Exact selected-part retailer descriptions identify a carbon-fiber housing overlay.
Is a new silicone coupler itemized?No. The exact bill and installation retain the original downstream intake tube and clamp; generic hardware wording does not establish an additional coupler.
Which MAF hardware is used?Transfer the original sensor using the two supplied M4 Torx screws. The manual does not state their length.
Where is the MAF harness routed?The manual suggests routing it below the oil cooler before final housing and tube alignment.
Which airflow figure is documented?The linked chart labels Pro 5R 434 CFM and stock 188 CFM at 7 inches H2O. This conflicts with current 400-CFM and 102-percent text and is qualified accordingly.
What torque or recheck mileage is specified?Neither a numeric torque nor a mileage interval appears in the exact manual. Follow its final connection checks without borrowing values from another intake.
Verify aFe 54-76315. Read all twelve pages and figures A-F. Work on a cool engine and disconnect the negative battery terminal. Save the two original mounting bolts and downstream intake clamp. Unplug the MAF, release the four airbox clips, remove the original filter and both airbox halves with the attached intake tube; temporarily remove the inlet duct if needed. Seat the new filter and clamps in the new housing, securing the filter-to-housing clamp first. Transfer both original mounting grommets. Mount the original MAF sensor in the new tube with the supplied M4 screws. Guide the tube into the engine bay and insert it into the original downstream tube, leaving its clamp loose. Connect the MAF harness; the manufacturer suggests routing it below the oil cooler. Align the housing, restore the original inlet duct if removed, insert and align the new tube in the filter, then secure the filter and downstream tube clamps. Reinstall both original mounting bolts and verify every connection. The exact manual gives no numeric torque or mileage-based recheck interval.
The current product description states 400 CFM at 7 inches H2O and a 102-percent increase, while its actual linked chart labels Pro 5R 434, dry 415 and stock 188 CFM at that pressure. The selected chart implies approximately 130.9 percent above stock; these conflicting figures are disclosed rather than combined into a single certified claim. The 98.6-percent efficiency claim lacks its underlying report in the reviewed material. The linked dyno marks 155.02 versus 148.10 hp and 217.05 versus 207.36 lb-ft at 3,750 rpm. Separate run maxima are 220.76 versus 216.80 hp and 220.80 versus 216.14 lb-ft. Thus advertised 7 hp / 10 lb-ft are point-gain claims. Both October 10, 2017 runs show SAE 1.02, original headers and exhaust, open hood and fourth gear; the intake run additionally notes miles, without quantifying them. No independent model year is established by the test-file name. 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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