aFe 51-32112-B is the Rapid Induction Pro DRY S intake for qualified 2012-2014 Ford F-150 3.5L EcoBoost applications. One oil-free filter, molded branched tube and top-mounted shield retain the original lower airbox and temperature sensor. The sensor mounts with a short M6 bolt and small washer, while two longer M6 bolts attach tube to shield.
Current exact manufacturer and sixteen-page shared manual both identify F-150 2012-2014 with 3.5L twin-turbo EcoBoost. The original model-level range and native membership remain unchanged. Match original two-inlet tube arrangement and retained temperature-sensor mounting. No 2011, later engine generation, naturally aspirated V6, V8 or related-kit application is inferred. Exact named-trim proof was unavailable from the current secondary search; no trim is invented.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2012-2014 | Ford | F-150 | 3.5L twin-turbo EcoBoost; exact engine and sensor arrangement required |
Verify 51-32112-B against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 51-32112-B |
| Product line | Rapid Induction current primary; MagnumFORCE Stage-2 exact manual |
| Selected filter | One 21-91040 Pro DRY S; three oil-free synthetic layers |
| Filter dimensions | 5.5-inch flange; 7 x 10-inch base; 6.75 x 5.5-inch inverted top; 5.75-inch height |
| Tube / shield | 05-32112B1 molded tube / 05-32112B2 top shield |
| Tube attachment | Two M6 x 1 x 25 bolts, two large M6 flat washers and two lock washers |
| Sensor attachment | M6 x 1 x 16 bolt, third lock washer and 12 mm OD / 6.4 mm ID flat washer |
| Loose clamps | Two size 064, one bill size 052 and one size 044 |
| Clamp-label qualification | Procedure says 056 where bill lists 052; verify supplied clamp size before assembly |
| Bench-flow qualification | Linked chart explicitly labels oiled 54-series 397 versus stock 233 CFM at 1.5 inches H2O; not selected dry certification |
| Follow-up | No numeric torque; retighten connections after approximately 100-200 miles |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 21-91040 | Selected Pro DRY S oil-free filter |
| 1 | 05-32112B1 | Molded intake tube |
| 1 | 05-32112B2 | Top shield |
| 1 | 05-01331 | Silicone reducer coupling |
| 1 | 05-01332 | Silicone hump coupling |
| 2 | 03-50006 | Size 064 clamps |
| 1 | 03-50008 | Size 052 clamp in bill; procedure 056 conflict qualified |
| 1 | 03-50019 | Size 044 clamp |
| 2 | 03-50070 | Large M6 flat washers for tube mounting |
| 3 | 03-50071 | M6 lock washers |
| 1 | 03-50052 | M6 x 1 x 16 sensor bolt |
| 1 | 05-00072 | 24-inch trim seal |
| 1 | 03-50177 | Small M6 washer, 12 mm OD x 6.4 mm ID |
| 2 | 03-50114 | M6 x 1 x 25 tube-mounting bolts |
Oiled and Pro-GUARD filters in the shared bill are alternate versions, not extra supplied filters. Retain original lower airbox, its tabs and clips, original inlet tubes and temperature sensor. No new sensor, quarter-turn adaptor, directional vent insert, entire lower housing or optional cover is itemized. Keep the two long tube-mounting bolts and large washers separate from the short sensor bolt and small washer. The reducer clamp size differs between bill and procedure; confirm supplied hardware against the actual connection without borrowing another kit 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 21-91040 Pro DRY S oil-free filter with three synthetic layers, 5.5-inch flange and 5.75-inch height.
When is the original temperature sensor removed?Leave it in the housing while unplugging the harness and removing the assembly. Remove its stud afterward with a six-point socket to prevent dropping or damaging it.
Which hardware attaches tube to shield?Two M6 x 1 x 25 bolts with large flat washers against plastic tube and M6 lock washers.
Which hardware secures the sensor?One shorter M6 x 1 x 16 bolt, a lock washer and the distinct 12 mm OD / 6.4 mm ID flat washer.
Which original airbox clips secure the new assembly?The removal releases three clips; final installation secures the two outside clips after tabs and couplings align.
How do filter and trim align?Precut trim notches sit at shield corners. The filter flat flange edge is parallel to the front shield edge.
Does the linked flowchart independently test selected dry media?It explicitly labels the oiled 54-series version, so its 397 versus 233 CFM result is qualified historical evidence.
What torque and follow-up apply?No numeric torque is specified. Retighten connections after approximately 100-200 miles and keep sensor wiring clear of belt and fan.
Verify aFe 51-32112-B. Read all sixteen pages and figures A-L. Work on a cool engine and disconnect negative battery terminal. Loosen original tube-end clamps. Disconnect the temperature-sensor harness while leaving sensor in housing to prevent dropping it. Release all three original airbox clips and remove tube and cover together, then remove original filter. Use 5/32-inch or 4 mm six-point socket to remove original sensor stud, then lift out and protect sensor. Attach new tube to shield with two M6 x 1 x 25 bolts, large flat washers against plastic tube and lock washers. Fit 24-inch trim seal with precut notches at corners. Fit selected filter through bottom of shield and align flat flange edge parallel to front shield edge. Install original sensor with M6 x 1 x 16 bolt, third lock washer and small M6 flat washer. Fit reducer to upper original tube and hump coupling to lower tube; reconcile reducer-clamp bill 052 versus procedure 056 and use correct supplied hardware. Lower complete assembly by aligning shield tabs with original lower airbox before both tube ends enter loose couplings. Reconnect sensor harness, keeping wiring clear of belt, fan and other moving components. Secure TWO OUTSIDE original clips, tighten all clamps and verify hardware. Restore battery connection. No numeric torque is specified. Retighten connections after approximately 100-200 miles and apply EO label only to the exact eligible application.
The current dry primary advertises 70-percent more flow. Its actual linked chart explicitly labels the oiled 54-series version at 397 versus original 233 CFM at 1.5 inches H2O, approximately 70.4 percent. That is historical oiled-media evidence, not independent selected dry-media certification. No dyno chart is linked and no horsepower or torque gain is invented. Current primary references D-550-28 for some applications, but complete exact official rows and exclusions remain unverified and the prior access challenge is not retried. Existing EO metadata is retained with application-specific limits rather than blanket exemption. Current product naming and older MagnumFORCE Stage-2 manual labeling describe the selected part with the exact bill preserved.
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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