This page lists 24 ignition parts for the 2021 Audi A5, across 4 part types, covering the 2.0L L4 Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Audi A5, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Ignition Coil (15 parts), Spark Plug (5 parts) and Crankshaft Position Sensor (3 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 2.0L L4 Turbocharged — the only engine offered in the 2021 Audi A5.
The most listed brands for 2021 Audi A5 ignition parts are WELLS (3 parts), BOSCH (3 parts) and NGK (3 parts), plus 12 more brands. Quality grades include Standard Replacement, Economy and Iridium.
4 parts on this 2021 Audi A5 page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including DELPHI GN10632 (Ignition Coil) and NGK 94833 (Spark Plug). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WELLS | 5S17946 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
This table covers the sensors that report camshaft position to the ECU. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
One part is listed for the 2021 Audi A5 — WELLS 5S17946.
Crankshaft Position Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 0261210383 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Crankshaft Position Sensor | View on Amazon |
| DELPHI | SS12483 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WELLS | 5S17919 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
This table covers the sensors that report crankshaft position and engine speed. Typical signs include a stall, a no-start, or a code for cam or crank correlation. Check the connector and the reluctor gap before replacing the sensor.
3 Crankshaft Position Sensor parts are listed for the 2021 Audi A5, from BOSCH, DELPHI and WELLS.
Listed part numbers: BOSCH 0261210383, DELPHI SS12483 and WELLS 5S17919.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2IGC0516 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
| PRENCO | 368278 | 🇺🇸 US 🇨🇦 CA | Includes 36-2150 Boot Kit | View on Amazon |
| SKP | SKUF716 | 🇺🇸 US | Hitachi design | View on Amazon |
| ULTRA-POWER | 5C1904 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | GN10632 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH Popular | 0986221072 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
| KARLYN / BREMI / STI Popular | 20529 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bremi-STI Direct Ignition Coil Unit | View on Amazon |
| BECK/ARNLEY | 1788607 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MILD HYBRID EV-GAS (MHEV)Hitachi Coil | View on Amazon |
| BECK/ARNLEY | 1788574 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | MILD HYBRID EV-GAS (MHEV)Eldor Coil | View on Amazon |
| DENSO | 6739206 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Direct Ignition Coil or Coil On Plug | View on Amazon |
| NGK | 48900 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportbackwith Eldor Coil | View on Amazon |
| STANDARD MOTOR PRODUCTS | UF716 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
| UNITED MOTOR PRODUCTS | COP618 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
| WALKER PRODUCTS | 9212313 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Single Coil | View on Amazon |
| WELLS | 5C1904 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 Sportback | View on Amazon |
This table covers the coils that fire each spark plug. Typical signs include a misfire that follows one cylinder, a snap in damp weather, or a coil that is swollen or cracked. Swap a suspect coil with a neighbor to confirm, then replace boots that tore on the way off.
15 Ignition Coil parts are listed for the 2021 Audi A5, from BECK/ARNLEY, HOLSTEIN, PRENCO and 11 other brands. DELPHI GN10632 carries the "Popular" badge.
In the Economy grade, HOLSTEIN, PRENCO, SKP and 1 other brand supply 4 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2IGC0516.
The Premium section lists 1 option from DELPHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10632 is listed in this group.
The Standard Replacement section lists 10 options from BECK/ARNLEY, BOSCH, KARLYN / BREMI / STI and 6 other brands — built to original-equipment specification. BOSCH 0986221072 is listed in this group.
Spark Plug
Summary: Notes include pre-set gaps of 0.025", 0.028" and 0.032". Replacement brands in this table include NGK, CHAMPION and BOSCH.
Double Platinum (lasts up to 3x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 94833 | 🇲🇽 MX | Laser PlatinumPre-Set Gap: 0.032" | View on Amazon |
| CHAMPION | 7600 | 🇺🇸 US 🇨🇦 CA | Double Platinum PowerPre-Set Gap: 0.028" | View on Amazon |
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 8501 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | EVOPre-Set Gap: 0.025" | View on Amazon |
| NGK | 94712 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Laser Iridium High Ignitability | View on Amazon |
| SKP | SK91006 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | A5 Quattro or A5 SportbackGap 0.028" | View on Amazon |
This table covers the spark plugs for this engine. Typical signs include misfire under load, rough idle, or a flashing check-engine light. Verify the gap even on pre-gapped plugs, and replace coil boots that come off a high-mileage engine.
5 Spark Plug parts for the 2021 Audi A5 come from 4 brands — NGK, CHAMPION, BOSCH and 1 other brand. The "Popular" part is NGK 94833.
The Double Platinum (lasts up to 3x longer than Copper / Nickel) section lists 2 options from NGK and CHAMPION — grouped under the catalog's "Double Platinum (lasts up to 3x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. NGK 94833 is listed in this group.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, BOSCH, NGK and SKP supply 3 parts: grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is BOSCH 8501.
Listed part numbers: NGK 94833, CHAMPION 7600 and BOSCH 8501, plus the other parts above.
Buying Ignition Parts for a 2021 Audi A5
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 2.0L L4 Turbocharged engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Ignition Coil and Spark Plug .
Frequently Asked Questions
How many ignition parts fit the 2021 Audi A5?
Our catalog currently lists 24 ignition parts for the 2021 Audi A5 across 4 subcategories and 15 brands, covering the 2.0L L4 Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 Audi A5?
Common symptoms include misfires under load, rough idle, flashing check-engine light, or poor starting in damp weather. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What spark-plug gap is listed for the 2021 Audi A5?
Notes on this page include pre-set gaps of 0.025", 0.028" and 0.032". Still verify against spec — even “pre-gapped” plugs should be checked before they go in.
What should I replace at the same time?
Where labor overlaps, replace plugs and wires (or coil boots) as a set — one weak cylinder makes the whole set feel bad.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Audi A5 was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Audi A5?
Every part on this page is matched to the 2.0L L4 Turbocharged engine. Then gap matters even on “pre-gapped” plugs — verify against spec, and replace coil boots when they come off a high-mileage engine. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Audi A5
Ignition Parts for Other Audi A5 Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.