The 2021 Toyota Prius has 45 ignition parts with verified fitment on this page — 4 part types and 21 brands, covering the 1.8L L4 ELECTRIC/GAS engine. Each part includes a manufacturer part number and application notes.
On the 2021 Toyota Prius, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. 40 parts of the 45 listed are Camshaft Position Sensor (15 parts), Ignition Coil (14 parts) and Crankshaft Position Sensor (11 parts). The other 1 part type covers the remaining 5 parts.
Every part on this page is matched to the 1.8L L4 ELECTRIC/GAS — the only engine offered in the 2021 Toyota Prius.
The most listed brands for 2021 Toyota Prius ignition parts are STANDARD MOTOR PRODUCTS (5 parts), WALKER PRODUCTS (4 parts) and DENSO (4 parts), plus 18 more brands. Quality grades include Standard Replacement, Economy and Premium.
10 parts on this 2021 Toyota Prius page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including STANDARD MOTOR PRODUCTS PC559T (Camshaft Position Sensor) and HOLSTEIN 2CRK0262 (Crankshaft Position Sensor). Click any part number to see every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC559T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
| AUTOTECNICA | TY1420175 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Terminal Type: BladeBlack | View on Amazon |
| DORMAN | 907856 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| HOLSTEIN | 2CAM0057 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| SKP | SKPC559 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prius Base Model | View on Amazon |
| ULTRA-POWER | 5S6281 | 🇺🇸 US 🇨🇦 CA | Fits 2WD | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC559 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Popular | 2351343 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| ASTEMO / HITACHI | CPS0256 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| BECK/ARNLEY | 1800499 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DELPHI | SS10939 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 1961001 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Engine Camshaft Position Sensor | View on Amazon |
| HELLA | 009168411 | 🇺🇸 US | 3-Pin Connectorwith Seal Ring | View on Amazon |
| NTK | EC0295 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Prius Base Model | View on Amazon |
| WELLS | 5S6281 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
15 Camshaft Position Sensor parts are listed for the 2021 Toyota Prius, from STANDARD MOTOR PRODUCTS, AUTOTECNICA, DORMAN and 11 other brands. STANDARD MOTOR PRODUCTS PC559T carries the "Popular" badge.
In the Economy grade, STANDARD MOTOR PRODUCTS, AUTOTECNICA, DORMAN and 3 other brands supply 6 parts: the catalog's value-priced group. A representative part number is STANDARD MOTOR PRODUCTS PC559T.
The Standard Replacement section lists 9 options from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, ASTEMO / HITACHI and 6 other brands — built to original-equipment specification. STANDARD MOTOR PRODUCTS PC559 is listed in this group.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN Popular | 2CRK0262 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DORMAN | 917783 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| PRENCO | 4D1214 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| STANDARD MOTOR PRODUCTS | PC819T | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | T-Series | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Popular | PC819 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS Popular | 2351404 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| BECK/ARNLEY | 1800713 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DELPHI | SS11268 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| DENSO | 1961117 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 2020 Edition or Base Model or L Eco or LE Model or Limited or Technology or XLE Model | View on Amazon |
| HELLA | 358380491 | 🇺🇸 US | View on Amazon | |
| WELLS | 5S11697 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
11 Crankshaft Position Sensor parts are listed for the 2021 Toyota Prius, from STANDARD MOTOR PRODUCTS, HOLSTEIN, DORMAN and 7 other brands. HOLSTEIN 2CRK0262 carries the "Popular" badge.
Economy: 4 parts, from HOLSTEIN, DORMAN, PRENCO and 1 other brand. A representative part number is HOLSTEIN 2CRK0262.
The Standard Replacement section: 7 options from STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, BECK/ARNLEY and 4 other brands. STANDARD MOTOR PRODUCTS PC819 is listed in this group.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SKC966 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Coil on Plug | View on Amazon |
| FAMOUS BRAND | 2505637202 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRENCO | 368355 | 🇺🇸 US 🇨🇦 CA | Includes 36-2178 Boot Kit | View on Amazon |
| SPECTRA PREMIUM | C1114 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Full Service Kit
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WALKER PRODUCTS | 92192326 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Full Service Kit | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | GN10861 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| ASTEMO / HITACHI | IGC0572 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Fits Prius AWD-eCoil On Plug | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular | 6731207 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Direct Ignition Coil or Coil On Plug | View on Amazon |
| BECK/ARNLEY | 1788593 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| KARLYN / BREMI / STI | 5221 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Bremi-STI Direct Ignition Coil Unit | View on Amazon |
| NGK | 49181 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF811 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 9212326 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Single Coil | View on Amazon |
| WELLS | 5C2262 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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.
14 Ignition Coil parts are listed for the 2021 Toyota Prius, from WALKER PRODUCTS, SKP, FAMOUS BRAND and 10 other brands. SKP SKC966 carries the "Popular" badge.
Economy: 4 parts, from SKP, FAMOUS BRAND, PRENCO and 1 other brand. A representative part number is SKP SKC966.
In the Full Service Kit grade, WALKER PRODUCTS supplies 1 part: grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. A representative part number is WALKER PRODUCTS 92192326.
The Premium section lists 2 options from DELPHI and ASTEMO / HITACHI — a step above OE specification in materials, tolerances or warranty terms. DELPHI GN10861 is listed in this group.
The Standard Replacement section: 7 options from DENSO, BECK/ARNLEY, KARLYN / BREMI / STI and 4 other brands. DENSO 6731207 is listed in this group.
Spark Plug
Summary: Notes include pre-set gaps of 0.035" and 0.040". Replacement brands in this table include SKP, AUTOLITE and BOSCH.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SKP Popular | SP1030 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Tapered Ground Electrode with Platinum ChipIridium XP | View on Amazon |
| AUTOLITE | AI5684 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Iridium Ultra | View on Amazon |
| BOSCH | 96353 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | OE Fine Wire Double Iridium | View on Amazon |
| DENSO | 3517 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Iridium Long LifeSuper Ignition Plug (SIP) | View on Amazon |
| NGK | 95202 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Laser Iridium High Ignitability | 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 Toyota Prius come from 5 brands — SKP, AUTOLITE, BOSCH and 2 other brands. The "Popular" part is SKP SP1030.
Listed part numbers: SKP SP1030, AUTOLITE AI5684 and BOSCH 96353, plus the other parts above.
Buying Ignition Parts for a 2021 Toyota Prius
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 1.8L L4 ELECTRIC/GAS 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: Camshaft Position Sensor and Ignition Coil .
Frequently Asked Questions
How many ignition parts fit the 2021 Toyota Prius?
Our catalog currently lists 45 ignition parts for the 2021 Toyota Prius across 4 subcategories and 21 brands, covering the 1.8L L4 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of ignition problems on a 2021 Toyota Prius?
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 Toyota Prius?
Notes on this page include pre-set gaps of 0.035" and 0.040". 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 Toyota Prius 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 Toyota Prius?
Every part on this page is matched to the 1.8L L4 ELECTRIC/GAS 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 Toyota Prius
Ignition Parts for Other Toyota Prius Years
Switch vehicle or jump to a subcategory
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.