26 Ignition parts are listed for the 2021 Toyota Sienna, in 4 part types, covering the 2.5L L4 ELECTRIC/GAS engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
The ignition system on the 2021 Toyota Sienna delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules. The largest groups are Ignition Coil (10 parts), Crankshaft Position Sensor (7 parts) and Spark Plug (5 parts). The other 1 part type covers the remaining 4 parts.
The 2021 Toyota Sienna came with a single engine, the 2.5L L4 ELECTRIC/GAS, and every part is verified against it.
14 brands supply ignition parts for the 2021 Toyota Sienna, led by BECK/ARNLEY (3 parts), WALKER PRODUCTS (3 parts) and WELLS (3 parts), plus 11 more brands. Quality grades include Standard Replacement, Economy and Premium.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2021 Toyota Sienna. 5 parts have it, including BECK/ARNLEY 1800802 (Crankshaft Position Sensor) and DELPHI GN10960 (Ignition Coil). Each part number opens a page with every vehicle that part fits.
Camshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CAM0627 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY | 1800803 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 2351507 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS | 5S17025 | 🇺🇸 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.
4 Camshaft Position Sensor parts for the 2021 Toyota Sienna come from 4 brands — HOLSTEIN, BECK/ARNLEY, WALKER PRODUCTS and 1 other brand.
The Economy section lists 1 option from HOLSTEIN — the catalog's value-priced group. HOLSTEIN 2CAM0627 is listed in this group.
In the Standard Replacement grade, BECK/ARNLEY, WALKER PRODUCTS and WELLS supply 3 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 1800803.
This group includes HOLSTEIN 2CAM0627, BECK/ARNLEY 1800803 and WALKER PRODUCTS 2351507 and the remaining parts above.
Crankshaft Position Sensor
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HOLSTEIN | 2CRK0797 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| SPECTRA PREMIUM | S10574 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BECK/ARNLEY Popular | 1800802 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS Popular | PC1161 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| DELPHI | SS12338 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WALKER PRODUCTS | 2351437 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Sensor Only | View on Amazon |
| WELLS | 5S15196 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | From 11/2020 | 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.
7 Crankshaft Position Sensor parts for the 2021 Toyota Sienna come from 7 brands — HOLSTEIN, SPECTRA PREMIUM, BECK/ARNLEY and 4 other brands. The "Popular" part is BECK/ARNLEY 1800802.
The Economy section: 2 options from HOLSTEIN and SPECTRA PREMIUM. HOLSTEIN 2CRK0797 is listed in this group.
Standard Replacement: 5 parts, from BECK/ARNLEY, STANDARD MOTOR PRODUCTS, DELPHI and 2 other brands. A representative part number is BECK/ARNLEY 1800802.
Listed part numbers: BECK/ARNLEY 1800802, HOLSTEIN 2CRK0797 and SPECTRA PREMIUM S10574, plus the other parts above.
Ignition Coil
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| AUTOTECNICA | TY1321450 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Attachment Method: Bolt-On | View on Amazon |
| SPECTRA PREMIUM | C1106 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Ignition Coil Mounts to Cylinder Head | View on Amazon |
| ULTRA-POWER | UF849 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Premium
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DELPHI Popular | GN10960 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DENSO Popular | 6731205 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Direct Ignition Coil or Coil On Plug | View on Amazon |
| BECK/ARNLEY | 1788598 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| NGK | 49619 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| STANDARD MOTOR PRODUCTS | UF849 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WALKER PRODUCTS | 9212364 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Single Coil | View on Amazon |
| WELLS | 5C2282 | 🇺🇸 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.
10 Ignition Coil parts for the 2021 Toyota Sienna come from 10 brands — AUTOTECNICA, SPECTRA PREMIUM, ULTRA-POWER and 7 other brands. The "Popular" part is DELPHI GN10960.
The Economy section: 3 options from AUTOTECNICA, SPECTRA PREMIUM and ULTRA-POWER. AUTOTECNICA TY1321450 is listed in this group.
In the Premium grade, DELPHI supplies 1 part: a step above OE specification in materials, tolerances or warranty terms. A representative part number is DELPHI GN10960.
Standard Replacement: 6 parts, from DENSO, BECK/ARNLEY, NGK and 3 other brands. A representative part number is DENSO 6731205.
Spark Plug
Summary: Notes include pre-set gaps of 0.031" and 0.032". Replacement brands in this table include NGK, AUTOLITE and BOSCH.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| NGK Popular | 96210 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Laser Iridium High Ignitability | 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 | 3524 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Iridium Long LifeSuper Ignition Plug (SIP) | View on Amazon |
| SKP | SP1030 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Tapered Ground Electrode with Platinum ChipIridium XP | 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 are listed for the 2021 Toyota Sienna, from NGK, AUTOLITE, BOSCH and 2 other brands. NGK 96210 carries the "Popular" badge.
Part numbers include NGK 96210, AUTOLITE AI5684 and BOSCH 96353, among others listed above.
Buying Ignition Parts for a 2021 Toyota Sienna
On this vehicle, the ignition system delivers spark at the right moment — plugs, coils, wires, distributors and ignition modules.
- Confirm you have the 2.5L 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: Ignition Coil and Crankshaft Position Sensor .
Frequently Asked Questions
How many ignition parts fit the 2021 Toyota Sienna?
Our catalog currently lists 26 ignition parts for the 2021 Toyota Sienna across 4 subcategories and 14 brands, covering the 2.5L 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 Sienna?
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 Sienna?
Notes on this page include pre-set gaps of 0.031" 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 Toyota Sienna 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 Sienna?
Every part on this page is matched to the 2.5L 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 Sienna
Ignition Parts for Other Toyota Sienna 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.