aFe 51-12942-B is the Rapid Induction oil-free intake for qualified 2017-2019 Ford F-250/F-350 Super Duty 6.2L gasoline applications. The exact manual uses the earlier Magnum FORCE Stage-2 name. A wrinkle-black aluminum tube and upper shield retain the original lower airbox and four latches, with specific small-vent routing and a 2018 cap instruction.
Current exact primary and own twenty-page manual specify Super Duty F-250/F-350 2017-2019 with 6.2L V8 gasoline engine. Original broad F-250 and F-350 rows retain their bounds. Ten named Super Duty groups are restored from exact selected-part tables: King Ranch, Lariat, Platinum, XL and XLT for both models, 2017-2019. Confirm actual engine, lower airbox and hose arrangement. The 2018 passenger-side cap instruction does not automatically establish identical routing for 2019; match the actual vehicle and manufacturer instruction. No diesel, 7.3L gasoline, Limited or later-year mapping is inferred.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2017-2019 | Ford | F-250 | 6.2L gasoline; original housing required |
| 2017-2019 | Ford | F-350 | 6.2L gasoline; original housing required |
| 2017-2019 | Ford | F-250 Super Duty | King Ranch |
| 2017-2019 | Ford | F-250 Super Duty | Lariat |
| 2017-2019 | Ford | F-250 Super Duty | Platinum |
| 2017-2019 | Ford | F-250 Super Duty | XL |
| 2017-2019 | Ford | F-250 Super Duty | XLT |
| 2017-2019 | Ford | F-350 Super Duty | King Ranch |
| 2017-2019 | Ford | F-350 Super Duty | Lariat |
| 2017-2019 | Ford | F-350 Super Duty | Platinum |
| 2017-2019 | Ford | F-350 Super Duty | XL |
| 2017-2019 | Ford | F-350 Super Duty | XLT |
Verify 51-12942-B against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 51-12942-B |
| Current product line | Rapid Induction; exact manual earlier Magnum FORCE Stage-2 |
| Selected filter | One 21-91065 Pro DRY S; three oil-free synthetic layers |
| Filter dimensions | 4-inch flange; 9 x 7.5-inch base; 6.75 x 5.5-inch inverted top; 7.5-inch height |
| Tube | 05-12942B1; 3.5-inch mandrel-bent wrinkle-black aluminum |
| Upper shield | 05-12942B2; 18-gauge powder-coated steel |
| Original housing | Retained lower airbox with four original latches |
| Vent arrangement | 5/8-inch quick-connect adapter, driver-side 3/8-inch adapter and passenger tee/cap branch |
| Recheck | All bolts, clamps and connectors after 100-200 miles; no numeric torque given |
| Performance evidence | 500 CFM at 7 inches water and 17 hp / 29 lb-ft are manufacturer claims without linked test sheets |
| Emissions | Current manufacturer: not CARB exempt; unavailable for California sale or California-registered vehicles |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 21-91065 | Selected Pro DRY S filter |
| 1 | 05-12942B1 | Intake tube |
| 1 | 05-12942B2 | Upper shield |
| 1 | 05-01264 | Silicone hump coupling |
| 1 | 05-01354 | 5/8-inch vent fitting |
| 2 | 03-50008 | Size 052 clamp |
| 2 | 05-00110 | 3/8-inch hose, each 9 inches long |
| 1 | 05-00072 | 7/16-inch trim seal, 34.5 inches long |
| 1 | 05-00069 | 5/8-inch hose, 6 inches long |
| 3 | 03-50097 | Mini size 004 clamp |
| 2 | 03-50078 | Mini size 010 clamp |
| 1 | 05-60508 | 3/8-inch vent adapter |
| 1 | 03-50424 | Vacuum vent cap; bill label 15/16-3/8, procedure seals 3/8-inch branch |
The shared bill lists one filter according to selected media, not both dry and oiled filters. Original lower housing, four latches, quick-connect hose, white plastic tee and driver-side spring clamp remain required. The hoses are labeled fuel hose stock in the bill but are used for the documented vent connections; this is not a fuel-system conversion. No new MAF, temperature sensor, wiring, battery parts or separate lower airbox is itemized. Optional cover, cleaner and other suggested service accessories are separate. Do not assume the bill cap label describes two independently supplied caps.
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 21-91065 Pro DRY S filter with three oil-free synthetic layers, inverted top, 4-inch flange and 7.5-inch height.
Is this the current Rapid Induction product?Yes. Current primary uses Rapid Induction; the exact shared manual retains the earlier Magnum FORCE Stage-2 name.
Is the original lower airbox retained?Yes. The new upper shield latches to it using all four original latches.
Which tube end installs first?Slide the tube into the filter first, then into the throttle-body coupling before securing clamps.
What changes for the 2018 passenger-side vent?The exact manual says omit the passenger-side small hose and seal the 3/8-inch tube vent with the supplied cap. Match actual configuration for other model years.
Are the quick-connect adapter and original spring clamp retained in the routing?The supplied 5/8-inch adapter fits the original quick-connect hose. The driver-side 3/8-inch connection uses the original spring clamp.
Is the optional cover supplied or tested by the stated figures?Cover 54-12948-B is separate. No linked test sheet establishes a cover-specific power or airflow result.
What torque and recheck are specified?No numeric torque is given. Recheck all bolts, clamps and connectors after 100-200 miles.
Verify aFe 51-12942-B. Read all twenty pages and figures A-L. Work cool and disconnect negative battery as directed. Release four original airbox latches and loosen the two original tube clamps. Disconnect three vent hoses, releasing the passenger-side hose at the white plastic tee, then remove original tube, filter and top cover. Fit trim to new shield. Insert small 3/8-inch adapter halfway into one supplied 3/8-inch hose. Latch shield onto original lower box using all four original latches; place filter inside shield with its clamp loose. Fit hump coupling and main clamps loosely on throttle body. Insert 5/8-inch aluminum adapter into original quick-connect vent hose. Connect driver-side 3/8-inch hose/adapter with original spring clamp. Install replacement tube FILTER end FIRST, then throttle-body coupling, and secure clamps. Connect 5/8-inch hose between quick-connect adapter and tube fitting using supplied mini clamps; reconnect driver-side small vent to tube. Connect passenger-side small hose between tube and original white tee using the two specified mini clamps, except the manual explicitly directs 2018 models to omit that hose and cap the tube 3/8-inch vent. Match actual configuration rather than extending that model-year instruction blindly. Verify connections and battery restoration. Check bolts, clamps and connectors after 100-200 miles. Exact manual gives no numeric torque.
Current primary rates the system at 500 CFM at 7 inches water and advertises gains of 17 hp and 29 lb-ft. No linked flowchart or dyno sheet independently establishes the baseline, selected-media run, engine test conditions or optional-cover effect. Do not convert the CFM rating into a calculated percentage gain. The current exact manufacturer says not CARB exempt and unavailable for California sale or use on vehicles registered with the California DMV. Older manual race-vehicle wording is not a waiver of that current restriction. Earlier 2017-2018 retailer manuals do not shorten the exact current 2017-2019 primary/manual coverage.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
Shop aFe POWER intake systems, replacement filters, exhaust components, BladeRunner cooling parts and CONTROL chassis accessories at Black Ops Auto Works. Compare Momentum GT, Track Series and Magnum FORCE intake applications alongside Pro DRY S and Pro 5R filter choices. Choose a complete upgrade or a service component for the system already on your car, truck or SUV.Choose Your aFe Intake and FilterMomentum GT, Track Series and Magnum FORCECompare the intake housing, tubing, filter arrangement and finish offered for your engine. The collection includes Momentum GT applications, selected carbon-fiber Track Series systems and Magnum FORCE configurations. Each package supplies its own combination of induction components, so choose the design for the installation you want.Pro DRY S or Pro 5R Filter MediaPro DRY S uses oil-free media and skips the re-oiling step during service. Pro 5R is an oiled filter option with a different maintenance procedure. Choose a media configuration aFe off...
View aFe Products
Shop performance air intake systems for your next engine-bay upgrade at Black Ops Auto Works. Compare complete cold-air intakes, short-ram layouts and enclosed systems from Legmaker, JLT, aFe, K&N, Injen and other listed manufacturers. Choose the intake character, packaging and filter-service approach that suit the vehicle and the way you use it.Complete Intakes or a Focused Component UpgradeA complete intake is the place to start when changing the filter, tubing and enclosure as a matched package. An individual airbox, intake tube, coupler or replacement filter can be a better purchase when the rest of the installed system is staying. Compare what the package supplies before choosing between the two routes.For a naturally aspirated, turbocharged or supercharged engine, the connection and sensor arrangement are part of the design. Choose the complete system for that application rather than combining a large tube and filter solely by appearance.Cold-Air, Short-Ram and Enclosed De...
View Air Intake Systems Products
Shop cold air intakes, short-ram systems, closed-airbox packages and intake tubes at Black Ops Auto Works. Compare Legmaker carbon-fiber layouts with aFe, K&N, Injen, AEM, JLT, CORSA, Volant and other listed options. Choose the filter location, inlet connection, service requirements and induction character that suit the vehicle and build.Choose the Intake LayoutA closed-airbox system encloses the filter and uses its specified air-feed arrangement. An open-element or short-ram layout places the filter differently and can change the audible induction character. A longer routed intake, a short-ram system and a factory-airbox tube replacement involve different installation scopes.Compare the actual filter position, heat-shield/enclosure design, retained ducts and access for maintenance. A cold-air label alone does not establish a lower inlet temperature in every driving condition or a fixed horsepower gain. Review manufacturer testing for the exact system and application.Legmaker HE...
View Cold Air Intakes Products
Shop Ford F-250 exhaust, cooling, brake and chassis references at Black Ops Auto Works. Compare Borla gasoline exhaust applications, Powerstroke service components, Bilstein reservoir shocks and Wilwood front-brake references for a defined truck build or repair. Match exact generation, engine, drivetrain, cab, wheelbase and installed suspension first.Gasoline Exhaust or Powerstroke Cooling ServiceThe Borla S-Type cat-back title names a 7.3L gasoline, crew-cab short-bed, specified-wheelbase and single-rear-wheel application. Match every configuration detail before comparing exhaust choices. aFe radiator and Sinister coolant-feed references name distinct 6.7L Powerstroke applications, while a BD Diesel manifold names an older 7.3L Powerstroke. Gasoline and diesel references require separate engine, production and installed-connection checks.Suspension, Steering and Brake-System ChoicesBilstein reservoir-shock, Zone diesel front-coil, Tuff Country spring or bracket and Synergy steering...
View Ford F-250 Parts and Accessories Products
Shop Ford F-250 Super Duty parts for suspension upgrades, engine service and truck accessories at Black Ops Auto Works. Compare ICON systems, KYB shocks, Fleece fuel-filter assemblies and Mishimoto transmission coolers. Match generation, gas or diesel engine, drivetrain and installed suspension to the work being planned.ICON Systems and Shock-Service ChoicesICON titles separate production ranges, gas and diesel applications, stages and coilover conversions. Define the desired ride-height and complete suspension plan before comparing included arms, shocks, springs and expansion-pack contents. KYB references distinguish front/rear positions, production and drivetrain; preserve any chassis-cab exclusion. A spacer, stabilizer kit or component box is separate from a complete specified system.Powerstroke Filtration and Cooling ServiceFleece under-bed and engine-mounted fuel-filter assembly titles describe different locations and application ranges. Identify the actual engine, production a...
View Ford F-250 Super Duty Parts and Accessories Products
Shop Ford F-350 brake, cooling, suspension and axle references at Black Ops Auto Works. Compare DFC brake-service applications, Powerstroke cooling components and Bilstein or Tuff Country chassis references. Identify the truck’s generation, engine, drivetrain, body and actual installed axles before selecting a repair or build package.Brake Service Across Different ChassisDFC rotor and drum titles include older 2WD or 4WD F-350 applications explicitly excluding Super Duty. Match the actual hub, caliper or drum assembly and dimensions and retain those exclusions. Shared E-Series or other-make hydraulic references require explicit F-350 coverage. Choose axle-specific service and review supplied shoes, pads, hardware or hoses separately.Powerstroke Cooling and Engine ComponentsaFe radiator and Sinister turbo-coolant-feed titles name specific 6.7L Powerstroke applications, while a BD passenger-side manifold names an older 7.3L Powerstroke application. Match actual engine, production, cha...
View Ford F-350 Parts and Accessories Products
Shop Ford F-350 Super Duty suspension, cooling, fuel-service and truck-accessory references at Black Ops Auto Works. Compare ICON suspension systems, Fleece filter assemblies, Mishimoto coolers and cab-access choices around your truck’s intended use. Keep pickup or chassis-cab identity, single or dual rear wheels, engine and current suspension explicit.Suspension System or Shock-Service OrderICON titles separate generations, gas/diesel applications, stages and coilover conversion packages. Compare the complete spring, shock, arm and expansion-pack contents after the installer confirms the desired setup. KYB MonoMax and other shock references specify positions and configurations; a title excluding chassis cab must retain that exclusion. Hellwig rear-bar coverage and steering-stabilizer references need separate drivetrain and mounting checks.Fuel, Cooling and Exhaust ComponentsFleece engine-mounted and under-bed filter assemblies service different locations and production ranges. Mish...
View Ford F-350 Super Duty Parts and Accessories Products
