aFe 50-70033D is a Momentum GT cold air intake for the specified 2018-2023 Mustang GT 5.0L V8, using one 21-91062 Pro DRY S filter with three oil-free synthetic layers. Its XLPE housing incorporates the original front inlet, an auxiliary inner-fender inlet and a clear inspection window. The XLPE tube transfers the original MAF and connects through a silicone reducer. Two aluminum vent fittings and the sound-port cap are included; check the exact engine, original housing and special-edition configuration before ordering.
Current exact primary and own manual specify Mustang GT 2018-2023 with the 5.0L V8. Exact selected-part named tables support extending the GT row from 2021 to 2023. Original GT Premium 2018-2021, Bullitt 2019-2020 and Mach 1 2021 rows remain at their exact positive retailer bounds. The manual cover does not separately certify the Bullitt/Mach 1 intake, throttle-body and housing variants, so confirm those actual configurations; positive rows are not deleted solely because the headline says GT. Later GT Premium and Mach 1 bounds remain held rather than inferred from the same engine displacement. No EcoBoost, V6, GT350, GT500 or next-generation 2024 application is added.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2019-2020 | Ford | Mustang | Bullitt |
| 2018-2023 | Ford | Mustang | GT |
| 2018-2021 | Ford | Mustang | GT Premium |
| 2021 | Ford | Mustang | Mach 1 |
Verify 50-70033D against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 50-70033D |
| Series | Momentum GT |
| Selected filter | One 21-91062 Pro DRY S; three oil-free synthetic layers |
| Filter dimensions | 5-inch flange x 7-inch base x 5.5-inch inverted top x 8-inch height |
| Tube / housing | 05-5070033B1 / 05-5070033B2; XLPE |
| Manual scope | Mustang GT 2018-2023, 5.0L V8; named special-edition conditions apply |
| Reducer / tube clamps | 05-01358 silicone reducer; #056 03-50009 and #060 03-50002 |
| MAF hardware | Two 03-50490 Torx screws; procedure explicitly specifies M4 x 10 mm |
| Vent fittings | Small 05-01338 and large 05-01339 aluminum NPT fittings; do not bottom out or overtighten |
| Sound port | Block with supplied vinyl cap 03-50623 |
| Bench-flow source conflict | Current primary advertises 595 CFM and 19% at 7 inches H2O. The actual linked chart is headed 54-70033 and shows 635 Pro 5R / 595 Pro DRY S / 460 stock. Its calculated increases are 38.04% / 29.35%, conflicting with 28% / 19%. Selected-part report identity and percentage reconciliation remain held. |
| Linked selected dyno | Marked 6,250-rpm point: 391.97 minus 380.63 = 11.34 HP; 329.42 minus 319.89 = 9.53 lb-ft. Separate maxima: 393.26 versus 389.04 HP = 4.22 HP; 359.38 versus 356.82 lb-ft = 2.56 lb-ft. |
| Torque / recheck | No numeric torque or battery step; 100-200-mile recheck |
| Emissions | Manufacturer states not currently CARB exempt; California restriction |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 21-91062 | Selected Pro DRY S filter; other-media entry is an alternative, not an extra filter |
| 1 | 05-5070033B1 | XLPE tube |
| 1 | 05-5070033B2 | XLPE housing |
| 1 | 05-00937 | Auxiliary airbox inlet plug |
| 1 | 05-01358 | Silicone reducer coupling; no dimensions printed in own bill |
| 1 | 03-50009 | #056 worm-drive clamp |
| 1 | 03-50352 | Housing T-bolt clamp, 7.31 to 7.62 inches |
| 1 | 05-01338 | Small aluminum vent fitting |
| 1 | 05-01339 | Large aluminum vent fitting |
| 1 | 03-50623 | Vinyl sound-port cap |
| 2 | 03-50490 | M4 Torx screws; M4 x 10 mm in procedure |
| 1 | 03-50002 | #060 worm-drive clamp |
Transfer original MAF, rubber mounting grommet, metal sleeve and rubber guide bushing. Reuse the factory housing bolt and engine-cover nuts/bolt covers. The terminal connector is relocated to the forward fender hole, and harness push clips are released for slack. No replacement MAF, sound chamber, strut bar, mounting grommet kit, engine cover or new factory fasteners are itemized. The filter flange clamp is an additional installation operation, separate from the two worm-drive tube clamps and housing T-bolt clamp. Two NPT vent fittings do not bottom out in the tube; exposed threads are not a reason to force them deeper. The auxiliary inlet plug and vinyl sound-port cap are different components and functions.
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 21-91062 Pro DRY S filter, tube, housing, reducer, two worm-drive clamps, housing T-bolt clamp, two aluminum vent fittings, airbox plug, vinyl sound-port cap and two MAF screws.
Is this filter oiled?This selection uses three oil-free synthetic layers. The other media shown in the shared manual is an alternative, not a second supplied filter.
Do the Bullitt and Mach 1 rows approve every later special edition?No. Original exact retailer-positive Bullitt 2019-2020 and Mach 1 2021 rows remain qualified for actual engine/housing and throttle-body configuration. Later years are not inferred from displacement alone.
Which original mounting pieces transfer?The rubber grommet, metal sleeve and guide bushing transfer to the housing; the factory housing bolt and engine-cover fasteners are reused.
Why move the terminal connector and harness clips?The manual moves the fender connector to the forward hole and releases lower push clips to provide slack for the relocated original MAF. Keep the harness clear when installing the housing.
Should the NPT fittings screw fully flush?No. The own manual says the aluminum NPT fittings will not bottom out and must not be overtightened. Reconnect their respective factory lines.
Are the advertised airflow percentages reconciled by the chart?Current primary advertises 595 CFM and 19% at 7 inches H2O. The actual linked chart is headed 54-70033 and shows 635 Pro 5R / 595 Pro DRY S / 460 stock. Its calculated increases are 38.04% / 29.35%, conflicting with 28% / 19%. Selected-part report identity and percentage reconciliation remain held.
What are the sound-port and recheck instructions?Block the sound port with the supplied vinyl cap, distinct from the auxiliary airbox plug. Install tube into filter first, then reducer; no numeric torque or battery step is given. Recheck after 100-200 miles.
Verify aFe 50-70033D. Read all sixteen pages and figures A-J with a cool engine. Remove engine-cover bolt covers/nuts and cover; the manual notes Performance Package vehicles require upper strut-tower-bar removal for cover access, so retain and reinstall it using the vehicle procedure. Loosen original tube clamps, disconnect both fittings and move the spring clamp up to release the 1-inch hose. Save the housing-to-fender bolt, disconnect MAF and harness clips, release the sound-chamber metal clip and remove the chamber, then remove the intake assembly. Relocate the fender terminal connector to the forward hole and release lower harness push clips to provide MAF slack. Transfer original housing metal sleeve, rubber grommet and guide bushing. Transfer MAF with the supplied M4 x 10 mm screws. Fit both aluminum NPT vent fittings without forcing them to bottom out or overtightening. Keep the MAF harness clear while installing housing, loose housing/filter clamps and reducer. Secure reducer to throttle body with the smaller worm-drive clamp and housing with the original bolt. Place the larger worm-drive clamp on the reducer loose, insert tube into FILTER FIRST and rotate into reducer. Reconnect MAF and tighten clamps. Reconnect the two fittings to their original locations, reinstall engine cover with both nuts and snap covers into place. Block the sound port with the supplied vinyl cap. Confirm all components and clamps secure. No battery-disconnection step or numeric torque is specified; recheck bolts, clamps and connectors after 100-200 miles.
The exact current primary and all sixteen pages of the own manual, complete bill and figures A-J were read and viewed. Both selected manuals and linked flow charts have identical bytes; both distinct dyno reports were viewed. Current primary advertises 595 CFM and 19% at 7 inches H2O. The actual linked chart is headed 54-70033 and shows 635 Pro 5R / 595 Pro DRY S / 460 stock. Its calculated increases are 38.04% / 29.35%, conflicting with 28% / 19%. Selected-part report identity and percentage reconciliation remain held. The chart values are reported as a source conflict, not a corrected performance certification or permission to substitute another part. Marked 6,250-rpm point: 391.97 minus 380.63 = 11.34 HP; 329.42 minus 319.89 = 9.53 lb-ft. Separate maxima: 393.26 versus 389.04 HP = 4.22 HP; 359.38 versus 356.82 lb-ft = 2.56 lb-ft. The advertised 11 HP/10 lb-ft point-based values are not the same as the difference between separate maxima. Intake runs were September 26, 2018 at 3:50:52 PM versus September 17 baseline at 3:31:26 PM. Both specify automatic transmission, sixth gear and stock exhaust with an x-pipe. Intake SAE factor is 1.05 versus baseline 1.04; intake temperature 100.630 versus 94.100 F, pressure 29.160 versus 29.110 in-Hg, humidity 25.44% versus 19.16%. The sheet does not print vehicle model year, hood or fan settings; these are not invented. Results are test-specific and do not certify special editions or other configurations. Exact retailer-positive Bullitt/Mach 1 rows are retained with engine/housing qualifications; later bounds stay held. Current manufacturer states non-CARB status and California restriction.
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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