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aFe 54-12678-B is one black vacuum-formed ABS cover and mounting hardware for the matching installed aFe intake housing. It is an intake accessory, not a complete intake or a filter-media choice. The current manufacturer explicitly lists 52-10014R, 52-10018R, 52-10020R, 52-10020D and 52-10020DR intake systems; the older linked manual illustrates 51-12672 and 54-12672 systems. Confirm the actual installed housing and its two mounting holes before ordering.
The current exact page describes Audi A3/S3 2015-2020 with 1.8L/2.0L turbo gasoline engines and lists five compatible installed intake systems. The eight-page manual names A3 1.8T 2015-2016, A3/S3 2.0T 2015-2020, Golf 1.8T 2015-2018 and GTI 2.0T 2015-2020, and illustrates the older 51/54-12672 intake housing. Current 52-series compatibility and older 51/54-series manual applications are qualified separately. All twenty-three original named groups, year bounds, gaps and vehicle memberships remain conditional on the actual matching housing. Exact selected-cover retailer evidence corroborates broader Golf/Golf R and GTI 2021 scope. Existing TDI positives have selected-cover retailer support but conflict with the gasoline-focused primary/manual headings; they remain a source exception rather than an assumed physical-incompatibility deletion. No new Q3, MKVIII GTI, Jetta GLI or later named vehicle mapping is inferred solely from the current compatible parent-kit numbers. No factory-airbox mounting is established.
| Years | Make | Model | Named trim; actual engine and hood requirements apply |
|---|---|---|---|
| 2015-2016 | Volkswagen | Golf | SEL |
| 2017 | Volkswagen | Golf | Wolfsburg Edition |
| 2015-2019 | Volkswagen | Golf R | Base |
| 2015-2021 | Volkswagen | GTI | Autobahn |
| 2015-2021 | Volkswagen | GTI | S |
| 2015-2021 | Volkswagen | GTI | SE |
| 2017 | Volkswagen | GTI | Sport |
| 2015-2019 | Audi | A3 Quattro | Prestige |
| 2020 | Audi | S3 | Premium |
| 2015-2020 | Audi | S3 | Premium Plus |
| 2015-2019 | Audi | S3 | Prestige |
| 2016 | Volkswagen | Golf | Base |
| 2015 | Volkswagen | Golf | Launch Edition |
| 2015-2018 | Volkswagen | Golf | S |
| 2015-2016 | Volkswagen | Golf | SE |
| 2015-2020 | Audi | A3 | Premium |
| 2015-2020 | Audi | A3 | Premium Plus |
| 2015-2019 | Audi | A3 | Prestige |
| 2015-2016 | Audi | A3 | TDI Premium |
| 2015-2016 | Audi | A3 | TDI Premium Plus |
| 2015-2016 | Audi | A3 | TDI Prestige |
| 2019 | Audi | A3 | Titanium |
| 2015-2019 | Audi | A3 Quattro | Premium |
Verify 54-12678-B against the actual engine, sensor and vent connections, mounting locations and applicable emissions requirements before ordering.
| Brand | aFe POWER |
| Manufacturer Part Number | 54-12678-B |
| Component | Magnum FORCE Stage-2 intake cover; matching installed aFe housing required |
| Material and finish | Vacuum-formed ABS plastic; black |
| Cover service part | One 05-12678B1 |
| Current compatible intake systems | 52-10014R, 52-10018R, 52-10020R, 52-10020D and 52-10020DR |
| Older manual illustrated systems | 51-12672 and 54-12672; verify actual housing/mounting revision |
| Fasteners | Two M6 clip nuts 03-50414; two M6x1x16 screws 03-50052; two M6 flat washers 03-50070 |
| Tool | 4 mm hex |
| Mounting | Remove trim seal; fit two clip nuts in existing housing holes; secure cover with supplied screws/washers |
| Filter and coupling | Not included in exact cover bill despite generic page flags |
| Performance | No numerical noise, airflow or dyno chart supplied |
| Emissions | Current accessory page says no CARB EO required; old manual competition boilerplate conflicts; no parent-intake certification |
| Procedure limits | No battery step, numeric torque, mileage interval, cutting or drilling specified |
| Quantity | Manufacturer service part | Component |
|---|---|---|
| 1 | 05-12678B1 | Black vacuum-formed ABS intake cover |
| 2 | 03-50414 | M6 clip nut |
| 2 | 03-50052 | M6x1x16 screw |
| 2 | 03-50070 | M6 flat washer |
The exact bill supplies one cover plus two each of the clip nuts, screws and washers. It does not supply a filter, coupling, intake tube, housing, sensor, wiring or fluid. Complete intakes, alternative filters and branded merchandise illustrated on the related-parts page are separate products. The existing P5R AIS title and Cold Air Intakes classification incorrectly described this cover as a full intake/media configuration and are corrected.
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 black ABS cover, two M6 clip nuts, two M6x1x16 screws and two M6 flat washers. No complete intake, filter or coupling is supplied.
Which current intake systems are listed?The exact current manufacturer names 52-10014R, 52-10018R, 52-10020R, 52-10020D and 52-10020DR. Confirm the actual housing and its mounting holes.
Why does the linked manual show different parent intake numbers?The older manual illustrates 51-12672 and 54-12672 systems. Current compatibility and that older illustration are separately qualified; no later vehicle list is transferred solely from a parent number.
Does the vehicle list guarantee factory-airbox fit?No factory-airbox mounting is established. Original broader gasoline/diesel retailer rows remain conditional on a matching installed aFe housing, with primary-source conflicts held.
Should the housing trim seal stay beneath the cover?No. Figure A specifically removes the trim seal before the clip nuts and cover are installed.
How is the cover secured and which tool is specified?Fit two M6 clip nuts in the existing housing holes, position the cover and secure it with the two M6x1x16 screws and washers. A 4 mm hex tool is specified.
Does this accessory approve the whole intake for California use?Current accessory page says no CARB EO is required, but the older manual has conflicting competition boilerplate. Neither statement certifies the complete parent intake.
Are a torque, battery step, mileage check or measured gain specified?The exact cover procedure provides no battery step, numeric torque or mileage interval. No quantitative sound, power, airflow or temperature chart is supplied.
Verify aFe 54-12678-B. Read all eight manual pages, work on a cool engine and verify the actual matching aFe housing against the current compatibility list and the older illustrated housing. Remove the housing trim seal. Install the two supplied M6 clip nuts into the two existing housing holes as Figure A shows. Position the cover over that housing and secure it with the two supplied M6x1x16 screws and flat washers as Figure B shows, using the listed 4 mm hex tool. Confirm secure seating. This exact cover procedure specifies no battery disconnection, numeric torque, mileage-based recheck, cutting or drilling; no parent-intake procedure or interval is borrowed.
The current exact page and all eight linked manual pages were read. Both contact sheets, the full A-D bill, Figures A-B, related-parts, warranty and contact pages were visually inspected. The current manufacturer lists five 52-series compatible intake systems, whereas the linked older manual illustrates 51/54-12672; that revision difference is explicit and does not justify automatic new vehicle assignments. Existing broader retailer-positive TDI and later GTI coverage remains conditional on the installed housing, with gasoline-heading conflicts held instead of erased. The exact bill establishes cover-only contents despite generic Filter Included and Coupler Included page flags. Current accessory page says no CARB EO required, while the old manual contains conflicting competition-only boilerplate. Neither establishes approval of a complete intake. Manufacturer noise-reduction/no-power-loss descriptions lack linked quantitative tests, so no numeric sound, power, torque, flow or temperature claim is certified. Original vehicle tags, bounds and native memberships are preserved while the saved fitment format and component classification are corrected. Turn14 exact-product information remains unavailable without authenticated access. 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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