aFe 54-12902R is the Magnum FORCE Stage-2 Pro 5R intake for qualified 2017-2019 Chevrolet Silverado HD and GMC Sierra HD 6.6L L5P Duramax turbo-diesel trucks. One nine-inch, five-layer pre-oiled cotton filter snaps into an open XLPE housing and joins an XLPE tube. The system retains the factory turbo coupling, mounting grommets and original MAF sensor; the supplied plug supports optional resonator removal.
The current exact manufacturer page and sixteen-page manual identify 2017-2019 Silverado HD/Sierra HD 6.6L L5P Duramax turbo diesel. All sixteen original named 2500 HD/3500 HD rows, year bounds and compressed tags remain unchanged. Match actual L5P engine, original MAF, turbo/resonator coupling, front inlet and housing mount arrangement. No earlier LML or later 2020-on L5P housing, gasoline engine, unproven extra trim or chassis-cab application is inferred from displacement or model-name overlap.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2017-2019 | Chevrolet | Silverado 2500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 2500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 2500 HD | WT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | High Country |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LT |
| 2017-2019 | Chevrolet | Silverado 3500 HD | LTZ |
| 2017-2019 | Chevrolet | Silverado 3500 HD | WT |
| 2017-2019 | GMC | Sierra 2500 HD | Base |
| 2017-2019 | GMC | Sierra 2500 HD | Denali |
| 2017-2019 | GMC | Sierra 2500 HD | SLE |
| 2017-2019 | GMC | Sierra 2500 HD | SLT |
| 2017-2019 | GMC | Sierra 3500 HD | Base |
| 2017-2019 | GMC | Sierra 3500 HD | Denali |
| 2017-2019 | GMC | Sierra 3500 HD | SLE |
| 2017-2019 | GMC | Sierra 3500 HD | SLT |
Verify 54-12902R against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-12902R |
| Series | Magnum FORCE Stage-2; 2017-2019 GM HD L5P |
| Filter | One 24-91120; five-layer pre-oiled cotton, nine-inch height, five-inch flange |
| Tube/housing | XLPE; 05-12902B1 tube and 05-5412902B2 housing |
| Coupling/clamps | Original turbo coupling/clamps retained; no new coupling in exact bill |
| MAF | Original sensor transferred with two M4 screws; no length specified |
| Side seal | 05-00072; 7/16-inch bulb, 26 inches |
| Top seal | 05-01507; 3/4-inch bulb, 37 inches |
| Resonator | Removal optional; supplied 05-00850 plug closes retained original coupling port |
| Mounting | Original bottom retaining plug transferred; seat fully in factory mounting grommets |
| Bench flow | Pro 5R 750 versus stock 415 CFM at 7 inches H2O; approximately 80.72% |
| Dyno source conflict | Linked chart run notes identify different 54-12901R intake; not independent certification of selected kit |
| Emissions | Current exact manufacturer page/manual state not CARB exempt; California purchase/registered-vehicle restriction retained |
| Recheck | Check bolts, clamps and connectors after 100-200 miles; no numeric torque |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 24-91120 | Pro 5R air filter |
| 1 | 05-12902B1 | Intake tube |
| 1 | 05-5412902B2 | Open housing |
| 2 | 03-50491 | M4 Torx screw; no length in bill |
| 1 | 05-01507 | 3/4-inch bulb trim seal, 37 inches |
| 1 | 05-00072 | 7/16-inch bulb trim seal, 26 inches |
| 1 | 05-00850 | Optional resonator-delete plug |
The dry filter in the shared bill is an alternative, not a second included filter. No new turbo coupling, separate hose clamps, MAF, humidity sensor, front inlet or lower mounting grommets are itemized. Remove and refit the filter's own flange clamp. Retain the original turbo coupling/clamps, original bottom retaining plug, mounting grommets and MAF; retain coolant-line and harness clips without damaging their lines or wiring. Related filters, programmers and exhausts pictured in the manual are separate.
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 24-91120 Pro 5R five-layer pre-oiled cotton filter, nine inches tall with a five-inch flange. The dry entry in the shared bill is an alternative.
Is a new turbo coupling supplied?No new coupling appears in the exact bill. The procedure retains the original turbo coupling and clamps despite the generic product-page coupling-included flag.
Must the resonator be removed?No. Removal is optional; if removed, the supplied 05-00850 plug seals its opening in the retained original coupling.
Where do the two trim seals fit?Install the 26-inch 7/16-inch bulb seal at the side opening and the 37-inch 3/4-inch bulb seal around the top.
Which factory mounting part must be transferred?Transfer the bottom retaining plug from the original housing and seat the new assembly fully into the factory mounting grommets.
Are new or additional sensors supplied?No. Transfer the original MAF with the two supplied M4 Torx screws. No new MAF or separate humidity sensor is itemized.
Which end of the tube is seated first?Seat the tube in the original turbo coupling first and then in the filter. Align the assembly and tighten all clamps before reconnecting the MAF.
What do the flow, dyno and recheck sources establish?Selected bench flow is 750 versus 415 CFM at 7 inches H2O. The linked dyno names different intake 54-12901R and does not certify this selected kit. Recheck bolts, clamps and connectors after 100-200 miles; no numeric torque is given. Retain current non-CARB restrictions.
Verify aFe 54-12902R. Read the complete sixteen-page manual, work on a cool engine and disconnect the negative battery terminal. Unplug the MAF and detach its harness clip from the original housing. Loosen the housing and resonator-coupling clamps and remove the original intake tube. If choosing resonator removal, loosen its coupling clamp, remove its retaining nut with a 13mm deep socket and remove the resonator; insert the supplied plug in the original coupling and secure its clamp. Detach the coolant-line clip before lifting out the original housing. Transfer the original bottom retaining plug to the new housing, fit the smaller 26-inch seal at the side opening and the larger 37-inch seal around the top. Seat the new housing fully into factory mounting grommets. Transfer the original MAF into the new tube with supplied M4 screws. Remove the filter clamp, lower the filter from above, guide its flange through the housing opening and snap it into place, then refit its clamp. Seat the tube in the original turbo coupling first and then in the filter, align and tighten all clamps. Reconnect the MAF, ensure lines and wiring remain secure and verify assembly. Recheck all bolts, clamps and connectors after 100-200 miles. No numeric torque is supplied, and no cutting or drilling is described.
The exact current manufacturer page and all sixteen manual pages were read; all four contact sheets, complete bill and Figures A-J, related products, warranty and contact page were visually inspected. Both linked chart images were inspected. The flow chart labels oiled 750, dry 715 and stock 415 CFM at 7 inches H2O; the selected oiled improvement is approximately 80.72%. The linked dyno is not exact selected-kit proof: its intake run explicitly names 54-12901R AIS, despite being linked by this product page. It shows marked differences 7.50 hp and 19.31 lb-ft at 2,033 rpm, versus separate maximum differences 5.20 hp and 8.46 lb-ft at different peak speeds. Run identity is 2019 Silverado 3500 HD 6.6L L5P, intake November 4, 2019 at 1:26:51 p.m. SAE 1.01 versus baseline October 17, 2019 at 10:38:11 a.m. SAE 1.02. Both list fourth gear, 60% load, 1.6K rpm, Tow Haul Mode, OBD2 rpm and Linx not connected; exhaust and weather are not specified. Different intake number, dates and correction factors prevent an exact selected-kit result certification. No guaranteed output, fuel-economy or delivered-price claim is made. Turn14 exact-product data remains unavailable without authenticated access. Protected commercial data and price are unchanged.
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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