aFe 51-81711 is the current Rapid Induction Pro DRY S intake for specified VW/Audi 2.0L TDI applications. One oil-free filter, a molded tube and powder-coated aluminum cover reuse the original lower airbox, inlet tube and MAF assembly. Older listing prose calls it Stage-2 Si, while its exact illustrated manual calls the same family Stage 1; follow the actual assembly and part number rather than either stage label.
The current exact primary headline specifies Jetta MKVI 2011-2014 2.0L TDI. Its complete October 2019 manual additionally identifies Jetta 2009-2014, Audi A3 2010-2013, Golf 2010-2014, Passat 2012-2014 and Beetle 2013-2014, all 2.0L TDI. Exact retailers positively list Jetta TDI S/SE/SEL 2015 beyond the manual; original 2015 rows remain qualified pending exact engine and lower-airbox verification. Existing A3 Base and Jetta SEL/GLI/Base/S rows have broader retailer positives, including gasoline engine records, that conflict with the exact manufacturer TDI scope. Those retained legacy rows are not certification of a gasoline engine or every housing sharing the model name. Confirm the actual engine, original MAF and breather connection before ordering. No new gasoline, GTI, overseas trim or later-year scope is inferred. Original named bounds and gaps remain unchanged. Current manufacturer California restrictions apply.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2009 | Volkswagen | Jetta | SEL |
| 2009-2014 | Volkswagen | Jetta | TDI |
| 2010 | Volkswagen | Jetta | TDI Cup Edition |
| 2012-2014 | Volkswagen | Jetta | TDI Premium |
| 2015 | Volkswagen | Jetta | TDI S |
| 2015 | Volkswagen | Jetta | TDI SE |
| 2015 | Volkswagen | Jetta | TDI SEL |
| 2010-2013 | Audi | A3 | Base |
| 2010-2013 | Audi | A3 | TDI |
| 2013-2014 | Volkswagen | Beetle | TDI |
| 2010-2014 | Volkswagen | Golf | TDI |
| 2011 | Volkswagen | Jetta | Base |
| 2009 | Volkswagen | Jetta | GLI |
| 2012 | Volkswagen | Jetta | GLI |
| 2014 | Volkswagen | Jetta | GLI |
| 2011-2012 | Volkswagen | Jetta | S |
| 2012-2014 | Volkswagen | Passat | TDI SE |
| 2012-2013 | Volkswagen | Passat | TDI SEL |
| 2014 | Volkswagen | Passat | TDI SEL Premium |
Verify 51-81711 against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 51-81711 |
| Current line | Rapid Induction; legacy Stage-2 Si listing / Stage 1 manual naming |
| Selected filter | One 21-35507, oil-free synthetic Pro DRY S |
| Current service-filter dimensions | 3.5-inch flange, five-inch base, 3.5-inch top, seven-inch height |
| Tube and cover | Molded tube and black powder-coated aluminum cover |
| Original housing | Lower airbox retained; stock filter and plastic grille removed |
| Coupler and clamps | 05-01106; two #048 |
| Supplied screws | Four 1.5-inch screws; thread dimensions not stated |
| Trim seal | 21.25 inches; bottom of cover |
| Brass nipple | 3/8 x 1/4 inch per bill; no thread standard inferred |
| Retained equipment | Original MAF, inlet tube, breather hose, lower airbox and specified cover screws |
| Flow evidence | Linked chart is labeled 50-81711/P5R: 130 vs 90 CFM at 1.5 inches H2O; not selected dry 56% proof |
| Recheck | Approximately 100-200 miles; no battery step or numeric torque in exact sheet |
| UPC | 802959511930 |
| 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 | 21-35507 | Selected oil-free filter |
| 1 | Intake tube | Molded replacement section |
| 1 | Cover | Black powder-coated aluminum per current primary |
| 1 | 05-01106 | Coupling |
| 2 | #048 | Clamps |
| 4 | 1.5-inch screws | Thread dimensions not stated |
| 21.25 inches | Trim seal | Bottom cover seal |
| 1 | 3/8 x 1/4-inch brass nipple | Breather connection; thread standard not stated |
The oiled and Pro-GUARD filter references in the shared instructions are alternatives; no extra filter, wrap or cleaner is included with this selected standard kit. The Value Pack is a separate package. Retain the original lower airbox and MAF assembly rather than treating this as a new complete lower housing or new sensor. The bill lists four supplied screws; the cover procedure specifically restores two stock screws and uses a supplied screw at the tube tab, without assigning a separate destination for every spare listed fastener. Do not invent new sensor screws or a breather clamp. Follow dry-filter cleaning directions without oil, despite shared re-oiling language for other media.
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 oil-free filter, molded intake tube, aluminum cover, one coupling, two clamps, four listed screws, trim seal and brass breather nipple. The original lower airbox and MAF remain.
Is a complete new lower airbox supplied?No. Remove the original filter and grille, then use the retained lower airbox with the new cover and intake components.
Does the original MAF transfer into a new sensor socket?The manual removes the MAF from the old cover and reinstalls the assembly in the original inlet tube. The new coupling and tube attach to that retained assembly. No new MAF is listed.
Does the breather hose need an added clamp?The illustrated special brass fitting accepts the original breather hose without a separate clamp. Do not invent an extra included clamp.
Which screws hold the cover?The procedure uses two original cover screws plus a supplied screw at the tube tab. The bill lists four supplied 1.5-inch screws without thread dimensions.
Do broad Jetta or A3 names prove gasoline fitment?No. Exact retailer positives conflict with the manufacturer TDI scope. Verify the actual engine and intake housing rather than assuming a shared model name proves compatibility.
Does the linked flow chart prove 56% for the dry kit?No. It labels another part/media combination and shows 130 versus 90 CFM, approximately 44.4%, at 1.5 inches H2O. The dyno likewise lacks complete selected-media test identification.
What torque, battery and recheck instructions apply?The exact sheet gives no numeric torque or battery step. Check electrical connections and retighten intake connections after approximately 100-200 miles.
Verify aFe 51-81711. Read the full October 2019 one-page illustrated sheet and bill. Remove the eight stock cover screws, unplug the MAF and disconnect the upper breather hose. Release the spring clamp holding the MAF to the original inlet tube and remove the cover/MAF assembly. Remove the stock filter and plastic grille from the original lower airbox. Unscrew the original MAF from the stock cover and reinstall it in the original inlet tube. Fit the new tube with its coupling and clamps onto the original MAF, then secure the tube as illustrated with the supplied screws. Fit the selected dry filter. Tighten the brass nipple using a suitable wrench/socket, then push the original breather hose onto its special fitting without adding an unlisted clamp. Tighten all clamps. Apply the trim seal to the bottom of the new cover. Secure the cover with two original screws and a supplied screw at the tube tab. Restore the MAF electrical plug and check all electrical connections; the finish text requires that check even though it does not separately number reconnection. Retighten connections after approximately 100-200 miles. No battery-disconnection instruction or numeric torque is given.
The current exact primary, complete October 2019 one-page bill and all fifteen illustrated panels were read and viewed, as were the actual flow and dyno images. The manual clearly retains the original lower housing, MAF and inlet tube. Current Rapid Induction, legacy Stage-2 Si and manual Stage 1 names describe this same selected family without changing the bill. The current page advertises 56% flow improvement, but its linked chart instead names 50-81711 and P5R, showing 130 versus 90 CFM at 1.5 inches H2O, about 44.4%; it is not an exact dry-media 56% verification. The linked dyno identifies prototype intake versus stock runs in third gear, 20-56 mph and 4WD, but gives no complete numerical gain table, vehicle/model year, selected media or weather/correction conditions. The advertised 10 hp/23 lb-ft are not independently established from that image. Broader exact retailer positives for 2015 TDI and legacy gasoline-named rows remain qualified against the TDI-only manufacturer scope; source conflicts are not resolved by assuming physical interchangeability or deleting positive records solely for headline absence. No new gasoline groups are added. The manufacturer states not CARB exempt and restricts California purchase/use on California-registered vehicles.
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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