aFe 51-10831 is the Magnum FORCE Stage-1 Pro DRY S intake for qualified MK4 Volkswagen 1.8L turbo gasoline and 1.9L TDI applications. Its illustrated package includes a dry main cone filter and a separate smog-pump breather filter, housing, housing cover, short intake tube and straight silicone coupling. The original MAF attaches to the new housing. The current manufacturer page specifies an 18-gauge powder-coated heat shield; it is not the generic polymer housing previously described.
Read the actual linked manual rather than an older indexed revision: its table names Golf 2000-2006 and Golf TDI 2000-2006, Golf GTI 2000-2005, Jetta GLS and TDI 2000-2005, Beetle 1.8T 1999.5-2005 and Beetle TDI 1999.5-2006. Earlier retailer manuals end at 2004.5; current primary headline names Golf 2000-2006. All named rows below require actual supported 1.8L turbo or 1.9L TDI configuration, original MAF and matching hose/mount arrangement. Original broader named entries remain source-qualified; they do not approve every engine offered in that trim. Missing Beetle TDI 2006, Golf GL TDI 2004 and Jetta GL 2003-2005 are supported by exact selected-part retailer tables. Golf GLS TDI adds 2006 separately from its existing 2004 row; no 2005 gap is filled. A positive retailer Golf GTI 1.8T 2006 entry conflicts with the actual manual GTI endpoint of 2005 and remains held without extension. ECS broader 2.0L and VR6 positives are not new engine permission from the manufacturer 1.8T/1.9TDI sheet. Match 1999 Beetle production/chassis to the 1999.5 manual start.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 1999-2004 | Volkswagen | Beetle | GL |
| 1999-2005 | Volkswagen | Beetle | GLS |
| 2005 | Volkswagen | Beetle | GLS TDI |
| 1999-2004 | Volkswagen | Beetle | GLX |
| 2001-2002 | Volkswagen | Beetle | Sport |
| 2002-2004 | Volkswagen | Beetle | Turbo S |
| 2000-2003 | Volkswagen | Golf | GL |
| 2000-2003 | Volkswagen | Golf | GLS |
| 2004 | Volkswagen | Golf | GLS TDI |
| 2002-2005 | Volkswagen | Golf | GTI 1.8T |
| 2003 | Volkswagen | Golf | GTI 20th Anniversary |
| 2002 | Volkswagen | Golf | GTI 337 |
| 2000-2001 | Volkswagen | Golf | GTI GLS |
| 2005 | Volkswagen | Golf | TDI |
| 2004-2005 | Volkswagen | Jetta | GLI |
| 2000-2005 | Volkswagen | Jetta | GLS |
| 2000-2004 | Volkswagen | Jetta | TDI |
| 2001 | Volkswagen | Jetta | Wolfsburg Edition |
| 2003 | Volkswagen | Jetta | Wolfsburg Edition |
| 2006 | Volkswagen | Beetle | TDI |
| 2004 | Volkswagen | Golf | GL TDI |
| 2006 | Volkswagen | Golf | GLS TDI |
| 2003-2005 | Volkswagen | Jetta | GL |
Verify 51-10831 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 51-10831 |
| Product line | Magnum FORCE Stage-1 Pro DRY S |
| Main filter | One oil-free Pro DRY S; exact manufacturer service reference 21-28001 |
| Main-filter dimensions | 2.75-inch flange; 6-inch base; 4.75-inch top; 5-inch height |
| Breather filter | One separate smog-pump breather filter; exact service number/media not specified in shared bill |
| Housing and cover | Both supplied; current primary specifies 18-gauge powder-coated shield; older retailer 16-gauge claim conflicts |
| Tube/coupling | One intake tube and one straight silicone coupling; no exact tube alloy or coupling dimensions stated |
| Clamps | Two #044 clamps and one Mini #016, plus filter-mounted clamp interfaces illustrated |
| Elbow | 90 degrees; 1 x 1 inch |
| Fasteners | Three M6x1x10 button-head and four M6x1x12 screws; two wavy and two flat washers |
| Vacuum hose and cap | 5/32 x 12-inch hose; black EPDM cap printed 0.172-inch OD |
| Reused sensor | Original MAF assembly attaches to new housing |
| Document conflict | Current linked sheet names later bounds than earlier indexed 2004.5 revision; match actual chassis and boxed revision |
| Emissions reference | Current primary D-550-3 versus legacy tag/retailer D-550-4; exact current order scope unresolved |
| Recheck | After a few hours; no battery step, numeric torque or mileage interval in exact sheet |
| UPC | 802959510834 |
| WARNING | This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov. |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 21-28001, current manufacturer service reference | Selected dry main filter; shared bill instead prints oiled replacement 24-28001 |
| 1 | Not specified | Intake tube |
| 1 | Not specified | Separate breather air filter |
| 1 | Not specified | Housing |
| 1 | Not specified | Housing cover |
| 3 | M6x1x10 | Button-head screws |
| 2 | #044 | Coupling clamps |
| 1 | Not specified | Straight silicone coupling |
| 2 | Not specified | Wavy washers |
| 2 | Not specified | Flat washers |
| 4 | M6x1x12 | Screws |
| 1 | Mini #016 | Clamp |
| 1 | 1 x 1-inch, 90-degree | Elbow |
| 1 | 5/32 x 12-inch | Vacuum hose |
| 1 | 0.172-inch OD as printed | Black EPDM cap |
The main filter and separate breather filter serve different air paths; this is not two interchangeable main elements. The shared manual bill and oil-restoration footer name the oiled alternative, while the selected current manufacturer page identifies Pro DRY S and service filter 21-28001. Do not apply the oiled-medium service instructions to the selected dry main filter. No new MAF, wiring, complete turbo inlet tract or cleaning chemicals are billed. Cover material, exact tube alloy and breather-filter service identity require confirmation before separate service purchases.
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 dry main filter plus a separate breather filter, housing and cover, intake tube, silicone coupling, elbow, clamps, seven screws, four washers, vacuum hose and EPDM cap.
Are the two filters interchangeable?No. The main cone filter serves the engine intake, while the separate breather filter attaches to the smog-pump elbow through the housing side opening.
Does the original MAF stay?Yes. Remove it from the original airbox and secure it to the new housing with the supplied hardware. No new sensor is itemized.
How does the smog-pump connection attach?Connect the 90-degree elbow to the original hose using the Mini clamp, pass it through the side opening and secure the breather filter over the elbow.
What changes for the TDI vacuum connection?The manual connects the 1.9L TDI vacuum hose to the intake nipple. Its no-line wording and listed cap are ambiguous, so match the actual port arrangement and boxed revision before fitting.
Which year ranges should I use?The actual manual separates Golf, GTI, Jetta and Beetle ranges. Golf GTI 2006 retailer positives remain unresolved against the 2005 manual endpoint; Golf GLS TDI 2004 and 2006 remain separate.
Are retailer power claims and all-year EO coverage established?No exact flow/dyno report is linked. Current D-550-3 reference conflicts with legacy D-550-4 metadata, so verify exact order scope and application before street use.
What battery, torque and recheck instructions apply?The exact sheet gives no battery step, numeric torque or mileage interval. Install without grease or oil, tighten every connection and recheck after a few hours.
Verify aFe 51-10831. Read all thirteen illustrated steps and compare the boxed revision. Remove the Phillips screws at the original airbox lid and the two Phillips screws securing the MAF to it. Disconnect the smog-pump hose, remove the old lid and filter, then the two lower-airbox bolts identified by the 10 mm tool reference and the lower box. Lower the new housing and secure the original MAF with supplied hardware. Connect the 1 x 1-inch elbow to the smog-pump inlet hose with the Mini clamp and pass it through the housing side opening. Fit the separate breather filter over that elbow and secure its clamp. Secure housing in the engine compartment and install intake tube, silicone coupling and selected main filter without grease or oil. The cover is itemized and shown in the completed assembly, although the sheet gives no separate cover-attachment step or torque. On the 1.9L TDI connect the vacuum hose to the intake nipple. The no-vacuum-line sentence refers to a supplied nipple while the bill lists a cap; confirm the exact port arrangement and boxed revision before using the listed cap rather than guessing a hose route. Tighten every connection and clamp and recheck after a few hours. No battery disconnection step, numeric torque or mileage interval is provided. The old EO-sticker instruction does not establish exemption beyond the actual applicable order.
The actual current primary and linked one-page manual were read, including enlarged bill and all thirteen installation panels. The downloaded table differs from older indexed text ending in 2004.5; these are document revisions, not proof to rewrite all saved bounds. Current manufacturer identifies the selected dry filter and 18-gauge shield, whereas older retailers mix oiled-filter wording, 16-gauge construction and generic performance claims. Exact tube alloy, cover material and breather-filter medium are not independently established. No exact bench-flow or dyno document is linked, so retailer 6 HP, 7 lb-ft, 29% flow and generic filtration-efficiency claims are not certified for this configuration. Current primary references D-550-3, while legacy metadata and some retailers reference D-550-4. Exact current exemption rows remain unresolved; full D-550-4 retrieval previously met an access challenge and was not retried. No blanket later-year street exemption is claimed. The retained original named coverage and separate 2006 Golf GLS TDI scope still require actual 1.8T/1.9TDI chassis and sensor/hose configuration; no 2.0L or VR6 fitment is inferred from a broader retailer list.
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 Volkswagen parts for intake, cooling, suspension, brake maintenance and exterior styling at Black Ops Auto Works. Compare APR and do88 system choices, Bilstein service components, clutch components and Seibon panels. Start with the exact Volkswagen model, platform, powertrain and transmission before building the order.Intake and Cooling ProjectsAPR and do88 references distinguish engine generations, platforms, turbo arrangements and transmission applications. Compare complete intake or intercooler packages with individual airboxes, inlets, pressure pipes and service filters. A replacement cover or hose is a separate component from a full system.Suspension and Brake MaintenanceChoose Bilstein dampers by exact model, generation, service axle, side and drivetrain, including electric-model applications where specified. Springs and sway bars likewise need exact chassis and factory-equipment support. Match installed brake assemblies and dimensions before comparing pads, rotors or ser...
View Volkswagen Products
Shop Volkswagen Beetle parts for brake maintenance, chassis projects, intake work and manual drivetrain service at Black Ops Auto Works. Compare applicable Bilstein dampers, H&R chassis components, APR engine-specific choices and clutch components. Identify the exact generation and engine before building a coordinated order.Suspension Across Beetle GenerationsBilstein Beetle/Karmann Ghia front-shock references concern different applications from later strut or spring choices. Choose H&R sway bars by exact later-model production coverage and installed suspension. Match actual chassis, mounting arrangement and factory suspension before comparing components; the Beetle name alone does not establish a common system.Drum and Disc Brake MaintenanceThe selection spans earlier drum or shoe references and later disc pad or rotor applications. Identify the brakes actually fitted, then match axle, caliper, drum or rotor dimensions and complete service contents. Include brake conversion...
View Volkswagen Beetle Parts and Accessories Products
Shop Volkswagen Golf parts for intake, cooling, suspension, brake maintenance and exterior styling at Black Ops Auto Works. Explore APR and do88 systems, Bilstein suspension choices, brake kits and Seibon panels. Start with your actual generation, body, engine and transmission to coordinate the project.Intake and Cooling by Engine Generationdo88 references distinguish V1 or V2 intakes, engine generations, turbo arrangements and OEM or do88 intercooler connections. Compare individual coolers or pipes with BigPack package contents. APR filters, inlets and supporting pieces also require the actual existing system and complete engine coverage matched.Springs, Dampers and Chassis SetupThe selection spans earlier H&R springs, Bilstein B12 packages and later service dampers or chassis references. Match factory suspension, axle, drivetrain and rear-suspension configuration before choosing a setup. DampTronic references require their specific equipment support, while a bushing is a separ...
View Volkswagen Golf Parts and Accessories Products
Shop Volkswagen GTI parts for exhaust sound, intake or cooling projects, chassis setup and brake maintenance at Black Ops Auto Works. Compare AWE Touring or Track systems, APR engine-specific systems, suspension choices and Seibon styling. Start with your actual generation, transmission and factory equipment.AWE and APR Exhaust ChoicesCompare AWE Touring or Track exhaust systems and Borla S-Type options for your exact GTI generation and body. APR choices include their own MK8 or MK7.5 TCR applications. Review manufacturer sound examples, connections, supplied sections and tip finish before choosing the complete system; order replacement tips or conversion pieces only for the supported existing exhaust.Intake, Inlet and Charge-Pipe ProjectsAPR titles distinguish PQ35 and later MQB or MQB EVO engines and different intake or turbo arrangements. Compare complete intake systems with airbox, inlet, filter and cover references. Charge pipes, throttle-body pipes and intercooler systems need...
View Volkswagen GTI Parts and Accessories Products
Shop Volkswagen Jetta parts and accessories for a daily-driver refresh, a sportier stance or a more distinctive exhaust note. Explore APR intakes, AWE and Borla exhausts, H&R springs, Bilstein suspension and brake-service options at Black Ops Auto Works. From an older MK2 or MK4 project to a later Jetta or GLI, build around the changes you want to feel, hear and see.Jetta Exhausts: Choose Your Sound and FinishFor the MK7.5 Jetta GLI, AWE Touring Edition uses 180 Technology to target unwanted exhaust drone, making it a useful starting point for a car that spends time cruising. Track Edition takes the louder, more assertive route. Compare recordings from the same engine and downpipe configuration to choose the character you want.The selection also includes Borla S-Type cat-back systems for specified later GLI applications and AWE Track Edition systems for the MK6 2.5L. Chrome, polished silver and dark tip finishes offer different looks where listed. Choose the exhaust for your exa...
View Volkswagen Jetta Parts and Accessories Products
