The aFe Momentum GT Stage-2 Si intake replaces the factory air box with a one-piece sealed housing and a dyno-tuned intake tube. Its 360 degree radial flow filter uses Pro 5R media with five layers of oiled cotton gauze that is washable and reusable, and the housing keeps an auxiliary inlet that can be closed with the included urethane plug. The kit flows 19% more air than the factory intake and is rated at up to 8 hp and 11 lb-ft. It installs in 30 minutes to an hour.
Specifications
| Type | Cold Air Intake System |
| Series | Momentum GT Stage-2 Si |
| Filter Media | Pro 5R, five-layer oiled cotton gauze, washable and reusable |
| Housing | One-piece sealed housing with auxiliary inlet and urethane plug |
| Gains | +8 hp, +11 lb-ft; 19% more airflow than the factory intake |
| Engine | V8 4.8L / 5.3L / 6.0L / 6.2L |
| Fitment Notes | 2007-2008 GMT900 trucks and SUVs with the factory electric cooling fan only. Not for 2007 Classic (GMT800) models; those use 51-74101 / 54-74101. Cadillac Escalade 2007-2008, Cadillac Escalade ESV 2007-2008, Cadillac Escalade EXT 2007-2008 and 3 more: V8-6.2L; Chevrolet Avalanche 2007-2008, Chevrolet Silverado 1500 2007-2008, Chevrolet Silverado 2500 HD 2007-2008 and 7 more: V8-6.0L |
| What's in the Box |
|
| Install | About 30 minutes to 1 hour |
| Replacement Filter | 24-91079 (Pro 5R) |
| Emissions | Covered by CARB Executive Order D-550-13 (base part 74102, GM V8 trucks and SUVs listed in the EO exhibit) |
| Hardware Included | Yes |
| Air Flow Gain | 19 Percent |
| Pre-Filter | 28-10273 |
| Air Box Type | Closed |
| Heat Shield Included | Yes |
| Tune Required | No |
| Warranty | 2 years on components (original owner) |
| Part Number | 54-74102 |
This part fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007-2008 | Cadillac | Escalade | Base |
| 2008 | Cadillac | Escalade | Platinum |
| 2007-2008 | Cadillac | Escalade ESV | Base |
| 2008 | Cadillac | Escalade ESV | Platinum |
| 2007-2008 | Cadillac | Escalade EXT | Base |
| 2007-2008 | Chevrolet | Avalanche | LS |
| 2007-2008 | Chevrolet | Avalanche | LT |
| 2007-2008 | Chevrolet | Avalanche | LTZ |
| 2007-2008 | Chevrolet | Silverado 1500 | LS |
| 2007-2008 | Chevrolet | Silverado 1500 | LT |
| 2007-2008 | Chevrolet | Silverado 1500 | LTZ |
| 2007-2008 | Chevrolet | Silverado 1500 | WT |
| 2007-2008 | Chevrolet | Silverado 2500 HD | LT |
| 2007-2008 | Chevrolet | Silverado 2500 HD | LTZ |
| 2007-2008 | Chevrolet | Silverado 2500 HD | WT |
| 2007-2008 | Chevrolet | Silverado 3500 HD | LT |
| 2007-2008 | Chevrolet | Silverado 3500 HD | LTZ |
| 2007-2008 | Chevrolet | Silverado 3500 HD | WT |
| 2007-2008 | Chevrolet | Suburban 1500 | LS |
| 2007-2008 | Chevrolet | Suburban 1500 | LT |
| 2007-2008 | Chevrolet | Suburban 1500 | LTZ |
| 2007-2008 | Chevrolet | Suburban 2500 | LS |
| 2007-2008 | Chevrolet | Suburban 2500 | LT |
| 2007 | Chevrolet | Suburban 2500 | LTZ |
| 2008 | Chevrolet | Tahoe | Hybrid |
| 2007-2008 | Chevrolet | Tahoe | LS |
| 2007-2008 | Chevrolet | Tahoe | LT |
| 2007-2008 | Chevrolet | Tahoe | LTZ |
| 2007-2008 | Chevrolet | Tahoe | PPV |
| 2007-2008 | GMC | Sierra 1500 | Denali |
| 2007-2008 | GMC | Sierra 1500 | SL |
| 2007-2008 | GMC | Sierra 1500 | SLE |
| 2007-2008 | GMC | Sierra 1500 | SLT |
| 2007-2008 | GMC | Sierra 1500 | WT |
| 2007-2008 | GMC | Sierra 2500 HD | SLE |
| 2007-2008 | GMC | Sierra 2500 HD | SLT |
| 2007-2008 | GMC | Sierra 2500 HD | WT |
| 2007-2008 | GMC | Sierra 3500 HD | SLE |
| 2007-2008 | GMC | Sierra 3500 HD | SLT |
| 2007-2008 | GMC | Sierra 3500 HD | WT |
| 2007-2008 | GMC | Yukon | Denali |
| 2008 | GMC | Yukon | Hybrid |
| 2007-2008 | GMC | Yukon | SLE |
| 2007-2008 | GMC | Yukon | SLT |
| 2007-2008 | GMC | Yukon XL 1500 | Denali |
| 2007-2008 | GMC | Yukon XL 1500 | SLE |
| 2007-2008 | GMC | Yukon XL 1500 | SLT |
| 2007-2008 | GMC | Yukon XL 2500 | SLE |
| 2007-2008 | GMC | Yukon XL 2500 | SLT |
Documents: Installation Instructions (PDF)
Which trucks does this intake fit?
- 2007-2008 GMT900 Chevrolet, GMC and Cadillac trucks and SUVs with the 4.8L, 5.3L, 6.0L or 6.2L V8 and the factory electric cooling fan. 2007 Classic (GMT800) models use the 51-74101 / 54-74101 kit.
How long does it take to install?
- About 30 minutes to an hour.
What replacement filter does it use?
- The Pro 5R replacement filter is part number 24-91079.
Is it emissions legal?
- The 74102 intake is covered by CARB Executive Order D-550-13 for the GM V8 trucks and SUVs listed in the EO exhibit. Place the EO label from the kit on or near the intake for smog inspection.
What warranty does it have?
- 2 years on components for the original owner.
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






