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aFe 50-70055D is the Momentum GT intake with one Pro DRY S filter for specified Silverado/Sierra 2500HD and 3500HD trucks with the actual 6.6L L8T gasoline V8. Its exact shared manufacturer manual identifies the gas engine, vent fitting and coolant-hose support hardware; these are distinct from a 6.6L L5P diesel intake.
The exact current shared 16-page manufacturer manual names 2020–2024 Silverado 2500HD/3500HD and Sierra 2500HD/3500HD with the 6.6L L8T gasoline V8. The current exact manufacturer product page was not located; retailer tables describing broader 2025 coverage or diesel options do not override the manual’s gas-engine identity. All original 2020–2021 named rows and bounds remain unchanged and conditional on the actual L8T, throttle-body, breather, sensor and mounting layout. No missing trim, later year or 6.6L turbo-diesel application is inferred from a shared displacement or model name.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2020-2021 | Chevrolet | Silverado 2500 HD | Custom |
| 2020-2021 | Chevrolet | Silverado 2500 HD | High Country |
| 2020-2021 | Chevrolet | Silverado 2500 HD | LT |
| 2020-2021 | Chevrolet | Silverado 2500 HD | LTZ |
| 2020-2021 | Chevrolet | Silverado 2500 HD | WT |
| 2020-2021 | Chevrolet | Silverado 3500 HD | LT |
| 2020-2021 | Chevrolet | Silverado 3500 HD | LTZ |
| 2020-2021 | Chevrolet | Silverado 3500 HD | WT |
| 2020-2021 | GMC | Sierra 2500 HD | Base |
| 2020-2021 | GMC | Sierra 2500 HD | Denali |
| 2020-2021 | GMC | Sierra 2500 HD | SLE |
| 2020-2021 | GMC | Sierra 3500 HD | Base |
| 2020-2021 | GMC | Sierra 3500 HD | Denali |
| 2020-2021 | GMC | Sierra 3500 HD | SLE |
| 2020-2021 | GMC | Sierra 3500 HD | SLT |
Verify 50-70055D against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 50-70055D |
| Family / selected filter | Momentum GT / one 21-91147 Pro DRY S |
| Engine requirement | 6.6L L8T gasoline V8; not L5P turbo diesel |
| Tube / housing | 05-5070055B1 / 05-5070055B2 |
| Coupling / vent | 05-01536 silicone bellows / 05-01339 aluminum vent fitting |
| Clamps | Two 03-50265 T-bolts, 3-13/16 to 4-1/8 inches; one 03-50267 large T-bolt |
| MAF / hose supports | Two M4 x 10 mm screws; two 3/4-inch-ID clamps with M6 x 1 x 20 mm screws and M6 washers |
| Filter-life system | Reset to 100%, then disable following the owner’s manual procedure |
| Torque / recheck | No numeric torque; check bolts, clamps and connectors after 100–200 miles |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 21-91147 | Selected Pro DRY S filter; alternate Pro 5R is not another included filter |
| 1 | 05-5070055B1 | Intake tube |
| 1 | 05-5070055B2 | Housing |
| 1 | 05-01536 | Silicone bellows coupling |
| 2 | 03-50265 | Smaller T-bolt clamps |
| 1 | 05-01339 | Aluminum vent fitting |
| 2 | 03-50234 | 3/4-inch-ID fixing clamps |
| 1 | 03-50267 | Large housing T-bolt clamp |
| 1 | 05-01429 | Auxiliary silicone plug |
| 2 | 03-50490 | Torx M4 x 10 mm screws |
| 2 | 03-50057 | Hex-head M6 x 1 x 20 mm screws |
| 2 | 03-50070 | M6 flat washers |
Reuse the original MAF, crankcase-breather hose, coolant hose, airbox mounting grommets, metal insert with its grommet, original fender retaining nut and inlet scoop. No new sensor, extension harness, new coolant hose, diesel resonator-delete parts or intake tuner is listed. Related oil-care products do not authorize oiling the dry filter. The original tube bracket and attached wiring are released during removal; retain the original hardware and verify the actual wiring clearance and required mounts against the full manual.
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 21-91147 Pro DRY S filter. The shared manual’s Pro 5R row is a different media choice.
Does this intake fit the L5P diesel?The exact manual specifies the 6.6L L8T gasoline V8. Shared displacement does not establish diesel coverage.
Where does the aluminum vent fitting connect?It installs in the new tube for reconnection of the original crankcase-breather hose.
Are new MAF sensors supplied?No. Transfer the original MAF using two M4 x 10 mm screws.
How is the coolant hose supported?Use both supplied 3/4-inch-ID fixing clamps, M6 x 1 x 20 mm screws and M6 washers. A new coolant hose is not listed.
Does the filter-life system need attention?The exact manual requires a reset to 100% and then disabling that system following the owner’s manual procedure.
Are older 6.0L dyno claims proof for this kit?No. An older engine and intake configuration do not establish an independently verified L8T dry-filter result.
What torque and recheck interval apply?No numeric torque is given. Check bolts, clamps and connectors after 100–200 miles.
Verify aFe 50-70055D. Read the complete exact shared manual on a cool engine. Release the plastic clips holding the coolant line on the original intake tube, disconnect the crankcase breather and loosen the throttle-body clamp. Retain the screw attaching the original tube bracket to the alternator and release any attached harness. Loosen the airbox clamp, disconnect MAF and its harness clip, and remove the original tube assembly. Retain the fender airbox nut and lift out the box, returning any displaced grommets to their bracket holes. Transfer the metal insert with its grommet, seat the new housing in its original mounts and restore the fender nut from inside. Ensure the original inlet scoop enters the housing. Loosely install the selected filter with the large T-bolt. Fit the bellows and two smaller T-bolts at the throttle body. Transfer MAF with the two M4 x 10 mm screws and fit the supplied aluminum vent fitting using the specified 20 mm wrench; no numerical fitting torque is given. Insert the new tube into the throttle-body coupling first, then the filter, align and secure the clamps. Reconnect the crankcase breather and MAF. Choose the optional auxiliary plug position. Secure the original coolant hose to the tube using both fixing clamps, M6 x 1 x 20 mm screws and washers, checking all wiring and hose clearance. Reset the air-filter-life system to 100% and then disable it using the owner’s manual procedure as the exact kit manual directs. No battery-disconnection step or numeric torque is specified. Check bolts, clamps and connectors after 100–200 miles.
The exact current manufacturer product page and selected-kit bench/dyno charts were not located. A secondary page attaches figures from an older 2015 6.0L mechanical-fan test to this listing; that is not independent proof of a 2020+ 6.6L L8T dry-filter result. No numeric gain, flow percentage or guaranteed result is certified from that cross-family copy. The exact manufacturer manual states not currently CARB exempt and restricts California purchase/use on California-registered vehicles; no broad legal exemption is inferred. Gas-engine identity remains explicit even where a retailer’s generic application table also lists turbo diesel.
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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