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aFe 51-30392 is the Magnum FORCE Stage-2 oil-free intake for qualified Ford 6.0L Power Stroke Super Duty applications from 2003 through 2007 and Excursion from 2003 through 2005. A molded tube and open-element heat shield retain the factory accordion coupling, MAF and filter minder.
The exact manual specifies F-250/F-350/F-450/F-550 Super Duty 2003-2007 and Excursion 2003-2005, all with 6.0L turbo diesel. Original broad truck and four Excursion application rows remain. Sixteen missing named Super Duty groups are restored from exact selected-part retailer tables, with Harley-Davidson Edition and F-250 King Ranch starting 2004. Confirm actual 6.0L engine and chassis, especially in transition years. No 7.3L, gasoline, later 6.4L or every-engine inference is made. A manual header mentioning Excursion through 2007 is limited by its own explicit 2003-2005 Excursion row.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2003-2005 | Ford | Excursion | Eddie Bauer |
| 2003-2005 | Ford | Excursion | Limited |
| 2004-2005 | Ford | Excursion | XLS |
| 2003-2005 | Ford | Excursion | XLT |
| 2003-2007 | Ford | F-250 | 6.0L turbo diesel; original housing required |
| 2003-2007 | Ford | F-350 | 6.0L turbo diesel; original housing required |
| 2003-2007 | Ford | F-450 | 6.0L turbo diesel; original housing required |
| 2003-2007 | Ford | F-550 | 6.0L turbo diesel; original housing required |
| 2004-2007 | Ford | F-250 Super Duty | Harley-Davidson Edition |
| 2004-2007 | Ford | F-250 Super Duty | King Ranch |
| 2003-2007 | Ford | F-250 Super Duty | Lariat |
| 2003-2007 | Ford | F-250 Super Duty | XL |
| 2003-2007 | Ford | F-250 Super Duty | XLT |
| 2004-2007 | Ford | F-350 Super Duty | Harley-Davidson Edition |
| 2003-2007 | Ford | F-350 Super Duty | King Ranch |
| 2003-2007 | Ford | F-350 Super Duty | Lariat |
| 2003-2007 | Ford | F-350 Super Duty | XL |
| 2003-2007 | Ford | F-350 Super Duty | XLT |
| 2003-2007 | Ford | F-450 Super Duty | Lariat |
| 2003-2007 | Ford | F-450 Super Duty | XL |
| 2003-2007 | Ford | F-450 Super Duty | XLT |
| 2003-2007 | Ford | F-550 Super Duty | Lariat |
| 2003-2007 | Ford | F-550 Super Duty | XL |
| 2003-2007 | Ford | F-550 Super Duty | XLT |
Verify 51-30392 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 51-30392 |
| Product line | Magnum FORCE Stage-2 |
| Selected filter | One 21-90037 Pro DRY S; three oil-free synthetic layers per current exact primary |
| Filter dimensions | 4-3/8-inch flange; 6 x 9-inch base; 5.5-inch top; 9-inch height |
| Tube | Heat-insulating molded plastic |
| Heat shield | Current primary: 16-gauge powder-coated shield; open-element design |
| Retained parts | Factory accordion coupler, MAF, filter minder and its original grommet |
| MAF hardware | Two #8-32 screws, two nylon spacers and gasket; no screw length specified |
| Mounting hardware | Two M6 screws, two flat washers, two wavy washers and three M6 nuts; screw length not given |
| Performance evidence | 31-percent flow, 9 hp and 39 lb-ft advertised; no linked test sheets reviewed |
| Emissions | Primary D-550-4; retailer D-550-24 conflict; full exact rows remain held |
| UPC | 802959511060 |
| 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 | 21-90037 | Selected Pro DRY S oil-free filter |
| 1 | Not specified | Heat-shield housing |
| 1 | Not specified | Molded intake tube |
| 2 | M6; length not stated | Mounting screw |
| 2 | M6 | Flat washer |
| 2 | M6 | Wavy washer |
| 3 | M6 | Nut |
| 2 | #8-32; length not stated | MAF screw |
| 2 | Not specified | Nylon MAF spacer |
| 1 | 3/4-inch bulb profile | Trim seal; length not stated |
| 1 | Not specified | MAF gasket |
| 1 | T20 | Torx bit |
| 1 | Not specified | Temperature-sensor grommet, per bill |
One filter is supplied according to selected media; alternate oiled filters and separate Value Pack extras are not included here. Keep selected dry media oil-free. The manual instructs reuse of the original filter-minder grommet and filter minder, while the loose-parts bill separately lists a temperature-sensor grommet. Follow actual sensor configuration; do not invent a new temperature sensor or replace the original minder merely from generic wording. No new accordion coupler, new MAF or new filter minder is itemized. Coupler Included in the primary summary does not establish a new loose coupling in the exact bill.
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 21-90037 Pro DRY S oil-free filter. Current exact primary identifies three synthetic layers; replacement dimensions are 9-inch height and 4-3/8-inch flange.
Does this replace the factory accordion coupling?No new coupling is itemized in the exact bill. Reinstall the original accordion coupler and tighten both ends after final alignment.
Which original components transfer?The original MAF, filter minder and minder grommet transfer. Preserve the exact sensor and electrical connections.
How is the MAF mounted?Use the supplied gasket, two nylon spacers and two #8-32 screws. The manual does not give screw length.
Where do the heat-shield tabs engage?At the radiator-support slot and stud, and the battery-tray slot. Align all mounting locations before tightening.
Does the Excursion application continue through 2007?The manual explicit application row ends in 2005. The broader F-Series endpoint does not extend Excursion production or fitment.
Are flow and power figures independently established here?No linked test sheets establish the advertised 31 percent, 9 hp or 39 lb-ft under documented selected-media conditions.
What torque and recheck interval are specified?The exact manual gives periodic checks, without numeric torque or mileage interval. Inspect both coupler clamps, MAF wiring, filter minder and mounting tabs.
Verify aFe 51-30392. Read the full one-page manual and all fifteen illustrated steps. Loosen turbo-inlet hose clamp and carefully disconnect original MAF wiring. Disconnect original filter minder. Release the two airbox-outlet clips and remove turbo-inlet tube with filter lid as one assembly; remove inlet half of original box. Fit supplied bulb trim around shield. Transfer original filter-minder grommet to replacement tube. Reinstall original accordion coupler on tube and place tube in vehicle, leaving clamps loose. Align shield tab and slot on radiator-support stud, slide tube through shield and align fastener holes, then engage battery-tray tab. Use two M6 screws, two nuts and two wavy washers to secure tube to shield. Secure housing with remaining M6 nut and flat washers, one on each side of tab if required. Transfer original MAF using gasket, two nylon spacers and two #8-32 screws; preserve correct sensor orientation and reconnect harness. Tighten both ends of original accordion coupling. Reinstall and reconnect factory filter minder, fit selected filter and secure its clamp. Check every clamp, electrical connection, clearance and mounting tab; recheck periodically. The exact manual specifies no mandatory battery disconnection, numeric torque or mileage interval. Apply EO identification only after confirming actual vehicle and configuration eligibility.
Manufacturer advertises 31-percent increased flow, 9 hp and 39 lb-ft. No linked flowchart or dyno establishes baseline, pressure, exact selected-media run or test conditions. Retailer 27-percent flow and older two-layer descriptions conflict with current exact primary three-layer wording; those older figures do not certify the current filter or kit. Current primary references D-550-4, while some exact retailer metadata names D-550-24. Prior official challenges remain stopped; full exact vehicle, chassis and exclusion proof is held. Preserve historical EO metadata without blanket California certification. Installing the provided label does not independently establish exemption.
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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