aFe BMW 328d N47 Momentum GT Pro 5R Intake

aFe Momentum GT intake details

aFe 54-76307 Momentum GT intake combines an oiled Pro 5R filter, molded housing and tube, silicone turbo elbow and MAF extension for qualified BMW 328d N47 2.0L turbo-diesel applications. The original breather hose connects to the supplied elbow, while the MAF harness is extended and secured with the supplied cable ties.

Key Features

• One 24-91106 Pro 5R filter with five oiled cotton-gauze layers and 8.75-inch height.
• Black molded XLPE housing with inspection window and molded plastic intake tube.
• Silicone elbow connects at the turbo inlet and original breather hose.
• MAF extension harness, two nylon cable ties and two M4 x 0.7 x 8 mm screws are supplied.
• Original housing grommet transfers; original turbo-inlet O-ring is removed as directed.

Fitment

Current manufacturer specifications and the exact manual identify 2014-2018 BMW 328d and 328d xDrive with the N47 2.0L turbo-diesel engine, including the xDrive Sports Wagon. Preserve existing 328d Base and 328d xDrive Base rows for 2014-2018; exact selected-part named retailer tables corroborate both. Sports Wagon describes body coverage within the manufacturer application, not a newly invented trim. No gasoline 328i or other diesel-engine application is inferred.

Verify 54-76307 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.

Specifications

What's Included

The shared dry-filter row belongs to a separate version. The bill lists three coupling clamps: one T-bolt, one No. 032 and one No. 048; the illustrated filter-flange connection uses an additional filter clamp. One procedure sentence calls another joint a T-bolt connection, but the exact bill does not supply a second T-bolt clamp. Identify the actual supplied hardware and joints rather than adding a clamp by inference. Retain the original MAF sensor, breather hose, housing grommet and other factory parts for future service. No new sensor or tuning module is itemized.

About aFe Power

aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.

Related Parts

• Manufacturer product specifications for 54-76307
• Exact illustrated installation manual
• Selected-media bench-flow comparison
• Manufacturer-linked dyno comparison and run configuration
• Shop the complete aFe Power collection

Frequently Asked Questions

One 24-91106 Pro 5R oiled filter with five cotton-gauze layers, an oval 5.25 x 3.75-inch flange and 8.75-inch height.

Yes. The exact manual includes 328d xDrive Sports Wagon within the reviewed 2014-2018 N47 application; no separate trim is invented.

The exact manual directs removing it before installing the supplied silicone elbow.

Place the turbo T-bolt clamp flush against the turbo wall and rotate the elbow clear of nearby hoses before securing it.

Three: one T-bolt, one No. 032 and one No. 048. A procedure wording discrepancy does not establish a second supplied T-bolt clamp.

Complete both harness connections and use the two supplied nylon cable ties to secure the extension to the vehicle.

No. Marked low-rpm differences are about 14.17 hp and 27.91 lb-ft, while the separate run maxima differ by 0.19 hp and 7.57 lb-ft.

Recheck clamps and connectors after 200 miles; the exact manual gives no numeric torque. Verify exact vehicle coverage under the full EO before relying on an emissions exemption.

Installation Instructions

Verify aFe 54-76307. Read all twelve pages and figures A-F; the document repeats some step numbers. Work on a cool engine and disconnect the negative battery terminal. Unplug the MAF, loosen the airbox-to-tube clamp, lift the housing to release the auxiliary hose and remove it. Remove the original tube screw, unclip the turbo-inlet joint and carefully disconnect the breather hose. Transfer the MAF with the supplied screws and prepare the three coupling clamps loosely. Connect the extension harness as shown. Remove the original turbo-inlet O-ring. Fit the silicone elbow with its turbo T-bolt clamp flush to the turbo wall, rotating the elbow clear of nearby hoses before securing the joint. Reconnect the original breather hose and intake tube with their appropriate supplied clamps; complete both extension-harness connections. Install the selected filter in the new housing, transfer the original housing grommet and seat the airbox assembly. Secure the filter-to-tube connection and tie the extension harness safely to the vehicle using both cable ties. Check clamps and connectors after 200 miles. No numeric tightening torque is stated. Follow the EO-label placement instruction after verifying the exact vehicle is covered by the applicable order.

Important Disclosures

The linked selected-part flow chart shows 176 versus 115 CFM at 1.5 inches H2O, approximately 53.0 percent above stock. The actual dyno marks 109.04 versus 94.87 hp and 208.03 versus 180.12 lb-ft near 2,750 rpm; handwritten 15 hp / 28 lb-ft annotations are rounded point-gain claims. Run maxima are 171.01 versus 170.82 hp and 258.51 versus 250.94 lb-ft, differences of 0.19 hp and 7.57 lb-ft. Both June 24, 2016 runs identify a 2015 328d, SAE 1.02, original headers, exhaust and ECU, xDrive, M Sport package, lowered springs, 20-inch wheels, third gear and 10-percent load, with differing weather. The package and chassis modifications are test conditions, not added trim selections. The current manufacturer references D-550-29 for some or all applications; an older indexed manual references 2014-2017. The full official order and exact 2018 coverage remain unverified, so no blanket exemption is asserted and existing EO metadata is preserved. 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.