aFe 54-10651 is the Magnum FORCE Stage-1 Pro 5R intake for BMW Z4 E85 2.5L 2003-2005 with the 2.5L M54 engine. It supplies one oiled filter, metal housing and filter adaptor while retaining the original intake tube and original MAF assembly. Its aluminum top cover uses four of the eight supplied button-head screws; the other four attach the filter adaptor.
Current exact primary and illustrated manual identify BMW Z4 E85 2.5L 2003-2005 2.5L M54. Preserve the existing exact named application row and its bounds. The shared Z4 sheet assigns separate selected parts to 2.5L and 3.0L M54 engines. A shared bill or identical linked chart does not establish interchange or coverage for later N52, 3.0si or Z4 M engines. Match actual chassis, engine, original tube, MAF and sealing interface before ordering. Current primary cites D-550-38 for some or all applications; full exact conditions and exclusions remain held. The official indexed D-550-38 table lists the exact 2003-2005 Z4 2.5L family, but indexed rows do not replace full order conditions after the prior challenge.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2003-2005 | BMW | Z4 | 2.5i |
Verify 54-10651 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-10651 |
| Product type | Magnum FORCE Stage-1 cold air intake |
| Vehicle | BMW Z4 E85 2.5L, 2003-2005, 2.5L M54 |
| Selected filter | One 24-55505 five-layer oiled Pro 5R |
| Filter dimensions | 5-1/2-inch flange, seven-inch base, 4-3/4-inch top, five-inch height |
| Housing | 18-gauge powder-coated metal per exact current primary |
| Original tube | Retained; no replacement tube/coupler in exact bill |
| MAF | Original assembly and sealing gasket reused |
| Spring clips | Two supplied |
| Adaptor | Three-angle filter adaptor |
| Top cover | One aluminum cover, secured by four supplied screws |
| Hardware | Eight M6 x 1 x 10 button-head screws |
| Trim | No separate trim seal listed |
| Performance evidence | Primary advertises 71% flow, 4 hp and 5 lb-ft; linked chart lacks stock/modified legend, run conditions and numerical table; no flow report |
| Emissions | D-550-38 cited; full exact conditions/exclusions held |
| Recheck | After a few hours; no numeric torque or mileage interval |
| UPC | 802959501115 |
| 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 | 24-55505 | Selected oiled Pro 5R filter |
| 1 | Housing | Powder-coated metal heat shield |
| 1 | Filter adaptor | Three-angle adaptor |
| 2 | Spring clips | Original MAF attachment |
| 1 | Aluminum cover | Housing top |
| 8 | M6 x 1 x 10 | Button-head screws: four adaptor, four cover |
The exact Z4 bill supplies one filter, housing, aluminum cover, adaptor, eight screws and two spring clips. Reuse the original MAF gasket and two original mounting bolts. The replacement intake tube, new MAF sensor, new sealing gasket, extra coupler and separate trim seal are not bill items. The required nut driver, wrench and ratchet are tools rather than supplied components.
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 oiled filter, metal housing, filter adaptor, two MAF spring clips and the selected mounting hardware. The Z4 bill also includes one aluminum cover.
Does Stage-1 replace the original intake tube?No replacement tube is in the exact bill. Retain the original tube and MAF assembly instead of borrowing a Stage-2 tube procedure.
Which seal is reused?The original MAF rubber gasket, carefully seated in the slot inside the new filter adaptor.
How is the MAF secured?Use the two supplied spring clips to secure the retained MAF assembly to the filter adaptor. No new sensor is supplied.
How are the eight screws divided?Four M6 x 1 x 10 screws secure the adaptor and the remaining four secure the aluminum cover.
Which original mounting parts are used?Reuse the two original 10mm airbox mounting bolts. The exact sheet also directs removal of the factory installation mount before lowering the new housing.
Are the performance claims and exemption fully verified?The linked chart lacks full run identity and conditions, and no flow report is linked. D-550-38 is cited, but full exact application conditions and exclusions remain held.
What battery, torque and recheck instructions apply?Disconnect/reconnect the negative battery terminal, tighten connections and clamps and recheck after a few hours. No numeric torque or mileage interval is specified.
Verify aFe 54-10651. Read all thirteen illustrated Z4 steps. Disconnect the negative battery terminal, loosen the clamp on the original intake tube and release the two metal clips on the MAF. Remove and save the two 10mm airbox bolts, remove the original MAF carefully without damaging its rubber gasket and lift out the airbox. Fit the supplied spring clips to the MAF. Mount the adaptor in the new housing with four button-head screws and carefully place the original gasket in the slot inside the adaptor. Remove the factory installation mount as illustrated before lowering the new housing, connect the retained MAF and secure it with the two spring clips. Reinstall the two saved original mounting bolts and tighten the assembly. Install the selected pre-oiled filter without adding oil or grease to its mounting connection. Attach the aluminum cover with the remaining four button-head screws. Tighten all connections and clamps, restore the negative battery terminal and recheck after a few hours. Apply EO labeling only for the exact covered application and conditions. No numeric torque or mileage interval is given.
Current exact primary, complete linked one-page manual, full bill and all thirteen installation images were reviewed along with the actual linked dyno image. This Stage-1 package retains the original intake tube, MAF and sealing interface; the product-page coupler flag does not supply a coupling absent from the exact bill. The 2.5L and 3.0L selected manuals are byte-identical and explicitly identify both parts; their linked dyno images are also byte-identical. The chart has no stock/modified legend, exact vehicle/engine identity, numerical run table, dates or conditions. It cannot independently certify different selected-engine claims or establish identical gains between the engines. No linked flow report verifies 71%. Official indexed D-550-38 exact engine/year coverage is qualified because full conditions and exclusions remain held after prior challenged access. Original application row, bounds, tags and native memberships remain unchanged. No extra engine, new sensor, screw specification, torque or mileage interval is inferred.
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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