aFe Momentum HD cold air intake system with a one-piece sealed cross-linked polyethylene housing, a clear sight window, the factory air scoop inlet and a dyno-tuned XLPE intake tube joined with stainless T-bolt clamps and a reinforced silicone coupling. The 9 in tall inverted 360 degree radial flow filter uses three-layer oil-free synthetic Pro DRY S media. It flows 53% more air than the factory intake (695 CFM at 7 in H2O) and is rated at 16 hp and 42 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 | One-piece sealed XLPE housing with sight window and factory scoop inlet; dyno-tuned XLPE tube; stainless T-bolt clamps |
| Filter | 9 in tall 360 degree radial flow, inverted top, 5-1/2 in flange |
| Gains | +16 hp, +42 lb-ft; 53% more airflow than the factory intake (695 CFM at 7 in H2O) |
| What's in the Box |
|
| Fitment Notes | For the 6.6L Duramax diesel (L5P) only. Use the included MAF extension harness on 2024 and newer trucks. Reset the Air Filter Life System to 100% and then disable it |
| Replacement Filter | 21-91147 (Pro DRY S) |
| Engine | V8-6.6L (td) Duramax |
| Filter Color | Gray |
| Hardware Included | Yes |
| Air Flow Gain | 53 Percent |
| Pre-Filter | 28-10053 |
| Air Box Type | Closed |
| Heat Shield Included | Yes |
| Tune Required | No |
| Warranty | 2 years on components (original owner) |
| Part Number | 50-70056D |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2021-2026 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2026 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2026 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2026 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2026 | Chevrolet | Silverado 2500 HD | WT |
| 2024-2026 | Chevrolet | Silverado 2500 HD | ZR2 |
| 2020-2026 | Chevrolet | Silverado 3500 HD | High Country |
| 2020-2026 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2026 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2026 | Chevrolet | Silverado 3500 HD | WT |
| 2020-2026 | GMC | Sierra 2500 HD | AT4 |
| 2024-2026 | GMC | Sierra 2500 HD | AT4X |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2026 | GMC | Sierra 2500 HD | Denali |
| 2024-2026 | GMC | Sierra 2500 HD | Denali Ultimate |
| 2022-2026 | GMC | Sierra 2500 HD | Pro |
| 2020-2026 | GMC | Sierra 2500 HD | SLE |
| 2020-2026 | GMC | Sierra 2500 HD | SLT |
| 2020-2026 | GMC | Sierra 3500 HD | AT4 |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2026 | GMC | Sierra 3500 HD | Denali |
| 2024-2026 | GMC | Sierra 3500 HD | Denali Ultimate |
| 2022-2026 | GMC | Sierra 3500 HD | Pro |
| 2020-2026 | GMC | Sierra 3500 HD | SLE |
| 2020-2026 | GMC | Sierra 3500 HD | SLT |
Documents: Installation Instructions (PDF) | Airflow Chart | Dyno Chart | Filter Cleaning Instructions
Does it fit the gas 6.6L?
- No. It is made for the 6.6L Duramax diesel (L5P).
Is anything different on 2024 and newer trucks?
- Yes. Use the MAF sensor extension harness included in the kit.
Will I get an air filter message?
- Reset the Air Filter Life System to 100% and then disable it, as the instructions describe.
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 21-91147.
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






