aFe Momentum HD cold air intake system with a cross-linked polyethylene housing, a dyno-tuned intake tube and a Dynamic Air Scoop with 30% more inlet area than the factory scoop. The 9 in tall 360 degree radial flow filter with a 6-1/2 x 4-3/4 in oval flange uses three-layer oil-free synthetic Pro DRY S media. It flows 65% more air than the factory intake (700 CFM at 7 in H2O) and is rated at 8 hp and 18 lb-ft over stock.
Specifications
| Type | Cold Air Intake System |
| Series | Momentum HD |
| Filter Media | Pro DRY S, three-layer oil-free synthetic, washable and reusable |
| Construction | XLPE housing; dyno-tuned intake tube; Dynamic Air Scoop with 30% larger inlet than the factory scoop |
| Filter | 9 in tall 360 degree radial flow, 6-1/2 x 4-3/4 in oval flange |
| Gains | +8 hp, +18 lb-ft; 65% more airflow than the factory intake (700 CFM at 7 in H2O) |
| What's in the Box |
|
| Fitment Notes | For the 7.3L Power Stroke diesel only, including the 1997 F-250 HD |
| Replacement Filter | 21-91109 (Pro DRY S) |
| Engine | V8-7.3L (td) Power-Stroke |
| Filter Color | Gray |
| Hardware Included | Yes |
| Air Flow Gain | 65 Percent |
| Pre-Filter | 28-10283 |
| Air Box Type | Closed |
| Heat Shield Included | Yes |
| Tune Required | No |
| Warranty | 2 years on components (original owner) |
| Part Number | 50-70057D |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1995-1996 | Ford | F-250 | Eddie Bauer |
| 1995-1996 | Ford | F-250 | Special |
| 1994-1996 | Ford | F-250 | XL |
| 1994-1996 | Ford | F-250 | XLT |
| 1997 | Ford | F-250 HD | XL |
| 1997 | Ford | F-350 | Base |
| 1995 | Ford | F-350 | Eddie Bauer |
| 1995-1996 | Ford | F-350 | Special |
| 1994-1997 | Ford | F-350 | XL |
| 1994-1997 | Ford | F-350 | XLT |
Documents: Installation Instructions (PDF) | Airflow Chart | Dyno Chart | Filter Cleaning Instructions
Which 1997 trucks does it fit?
- The 1997 F-250 HD and F-350 with the 7.3L Power Stroke diesel.
Is the air scoop included?
- Yes. The Dynamic Air Scoop comes in the kit.
How do I service the filter?
- The Pro DRY S filter is washable and reusable; cleaning instructions are linked under Documents. The replacement filter is part number 21-91109.
What comes in the box?
- Filter, housing, intake tube, air scoop, silicone reducer coupling, T-bolt clamps and grommet.
Shipping
- Orders placed before 3 PM EST typically ship the same business day. Larger items ship within 1 to 3 business days.
- Standard, expedited, and overnight options at checkout.
- Oversized items ship by freight and take longer.
- Special order items follow a lead time we confirm with you individually before the order is committed.
- Backordered items ship as soon as stock lands. Lead times are manufacturer estimates and can change. Contact us for current ETAs.
- Need to cancel? Email us right away. Cancellations are not guaranteed once an order is in process. In-stock orders cancel free before they ship; a 6% fee applies only to confirmed backorders and special orders.
- International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.
Returns
- 30 days from delivery to request and ship back a return on new, uninstalled items in original packaging with all hardware.
- Standard returns: 8% restocking fee on the item price before tax and shipping. Shipping is not refunded in either direction. All waived if the item is defective or we made the error.
- Fitment guaranteed: select your vehicle above, or confirm fitment with us in writing before you order. If the part shows as a fit and it is wrong, the return is on us, even after installation. Otherwise, installed or used parts cannot be returned.
- Final sale: special orders, coilovers, electronics, engine internals, turbochargers, superchargers and turbo kits, unless defective or we sent the wrong item.
- Product images may be representative. The SKU and specifications in the listing are what ships.
- Email us for return authorization before shipping anything back.
Full details: Shipping Policy · Returns & Refunds · Warranty






