This page lists 36 ignition parts for the 2021 Acura Ilx, across 4 part types, covering the 2.4L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2021 Acura Ilx, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. Most of the listed parts are Ignition Coil (13 parts), Crankshaft Position Sensor (9 parts) and Camshaft Position Sensor (7 parts). The other 1 part type covers the remaining 7 parts.
Every part on this page is matched to the 2.4L L4 — the only engine offered in the 2021 Acura Ilx.
The most listed brands for 2021 Acura Ilx ignition parts are NGK (4 parts), HOLSTEIN (3 parts) and PRENCO (3 parts), plus 15 more brands. Quality grades include Standard Replacement, Economy and Iridium.
9 parts on this 2021 Acura Ilx page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ASTEMO / HITACHI CPS0222 (Camshaft Position Sensor) and ASTEMO / HITACHI CPS0026 (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CAM0352 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 4E1225 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | CPS0222 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular | PC978 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI | SS11375 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 2351775 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S13536 | 🇺🇸 US 🇨🇦 CA | 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.
7 Camshaft Position Sensor parts are listed for the 2021 Acura Ilx, from HOLSTEIN, PRENCO, ASTEMO / HITACHI and 4 other brands. ASTEMO / HITACHI CPS0222 carries the "Popular" badge.
In the Economy grade, HOLSTEIN and PRENCO supply 2 parts: the catalog's value-priced group. A representative part number is HOLSTEIN 2CAM0352.
The Standard Replacement section lists 5 options from ASTEMO / HITACHI, STANDARD MOTOR PRODUCTS, DELPHI and 2 other brands — built to original-equipment specification. ASTEMO / HITACHI CPS0222 is listed in this group.
Part numbers include ASTEMO / HITACHI CPS0222, HOLSTEIN 2CAM0352 and PRENCO 4E1225, among others listed above.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CRK0306 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 4D1350 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | CPS0026 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular | PC959 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BECK/ARNLEY | 1800730 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI | SS11403 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HELLA | 358380791 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 2351671 | 🇺🇸 US 🇨🇦 CA | Sensor Only | View on Amazon |
| WELLS | 5S12696 | 🇺🇸 US 🇨🇦 CA | 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.
9 Crankshaft Position Sensor parts are listed for the 2021 Acura Ilx, from HOLSTEIN, PRENCO, ASTEMO / HITACHI and 6 other brands. ASTEMO / HITACHI CPS0026 carries the "Popular" badge.
Economy: 2 parts, from HOLSTEIN and PRENCO. A representative part number is HOLSTEIN 2CRK0306.
The Standard Replacement section: 7 options from ASTEMO / HITACHI, STANDARD MOTOR PRODUCTS, BECK/ARNLEY and 4 other brands. ASTEMO / HITACHI CPS0026 is listed in this group.
Listed part numbers: ASTEMO / HITACHI CPS0026, HOLSTEIN 2CRK0306 and PRENCO 4D1350, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | UF712F | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| HOLSTEIN | 2IGC0512 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 368259 | 🇺🇸 US 🇨🇦 CA | Includes 36-2157 Boot Kit | View on Amazon |
| SKP | SKUF712 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| SPECTRA PREMIUM | C867 | 🇺🇸 US 🇨🇦 CA | Ignition Coil Mounts to Cylinder Head | View on Amazon |
| ULTRA-POWER | UF712 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ASTEMO / HITACHI Popular | IGC0205 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DELPHI Popular | GN10732 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular | 6732315 | 🇺🇸 US 🇨🇦 CA | Direct Ignition Coil or Stick Coil | View on Amazon |
| BECK/ARNLEY | 1788539 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF712 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| UNITED MOTOR PRODUCTS | COP615 | 🇺🇸 US 🇨🇦 CA | Body code DE2 | View on Amazon |
| WALKER PRODUCTS | 9212283 | 🇺🇸 US 🇨🇦 CA | Single Coil | 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.
13 Ignition Coil parts are listed for the 2021 Acura Ilx, from FVP, HOLSTEIN, PRENCO and 10 other brands. ASTEMO / HITACHI IGC0205 carries the "Popular" badge.
Economy: 6 parts, from FVP, HOLSTEIN, PRENCO and 3 other brands. A representative part number is FVP UF712F.
The Premium section lists 2 options from ASTEMO / HITACHI and DELPHI — a step above OE specification in materials, tolerances or warranty terms. ASTEMO / HITACHI IGC0205 is listed in this group.
The Standard Replacement section: 5 options from DENSO, BECK/ARNLEY, STANDARD MOTOR PRODUCTS and 2 other brands. DENSO 6732315 is listed in this group.
Spark Plug
Summary: Notes include pre-set gaps of 0.040", 0.041" and 0.044". Replacement brands in this table include NGK, BOSCH and CHAMPION.
Iridium (lasts up to 4x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 93501 | 🇺🇸 US 🇨🇦 CA | Iridium IXPre-Set Gap: 0.044" | View on Amazon |
| BOSCH | 8513 | 🇺🇸 US 🇨🇦 CA | EVO | View on Amazon |
| BOSCH | 96310 | 🇺🇸 US 🇨🇦 CA | OE Fine Wire Double Iridium Pin-to-PinPre-Set Gap: 0.040" | View on Amazon |
| CHAMPION | 9412 | 🇺🇸 US 🇨🇦 CA | IridiumPre-Set Gap: 0.041" | View on Amazon |
| NGK | 96964 | 🇺🇸 US 🇨🇦 CA | Laser Iridium High IgnitabilityPre-Set Gap: 0.044" | View on Amazon |
Platinum (lasts up to 2x longer than Copper / Nickel)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK | 92649 | 🇺🇸 US 🇨🇦 CA | G-Power | View on Amazon |
Ruthenium (maximum durability & ignitability)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 92274 | 🇺🇸 US 🇨🇦 CA | Ruthenium HX High IgnitabilityHex Size: 14mm | 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.
7 Spark Plug parts for the 2021 Acura Ilx come from 3 brands — NGK, BOSCH and CHAMPION. The "Popular" part is NGK 93501.
In the Iridium (lasts up to 4x longer than Copper / Nickel) grade, NGK, BOSCH and CHAMPION supply 5 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 NGK 93501.
The Platinum (lasts up to 2x longer than Copper / Nickel) section lists 1 option from NGK — grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. NGK 92649 is listed in this group.
The Ruthenium (maximum durability & ignitability) section lists 1 option from NGK — grouped under the catalog's "Ruthenium (maximum durability & ignitability)" designation — the notes column spells out what sets them apart. NGK 92274 is listed in this group.
Listed part numbers: NGK 93501, BOSCH 8513 and BOSCH 96310, plus the other parts above.
Buying Ignition Parts for a 2021 Acura Ilx
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 2.4L L4 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 Crankshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2021 Acura Ilx?
Our catalog currently lists 36 ignition parts for the 2021 Acura Ilx across 4 subcategories and 18 brands, covering the 2.4L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 Acura Ilx?
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 Acura Ilx?
Notes on this page include pre-set gaps of 0.040", 0.041" and 0.044". 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 Acura Ilx 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 Acura Ilx?
Every part on this page is matched to the 2.4L L4 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 Acura Ilx
Ignition Parts for Other Acura Ilx Years
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