2021 Toyota 4RUNNER Ignition Parts

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. Read more

15 Camshaft Position Sensor parts for the 2021 Toyota 4RUNNER come from 14 brands — STANDARD MOTOR PRODUCTS, AUTOTECNICA, DORMAN and 11 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PC559T.

The Economy section lists 6 options from STANDARD MOTOR PRODUCTS, AUTOTECNICA, DORMAN and 3 other brands — the catalog's value-priced group. STANDARD MOTOR PRODUCTS PC559T is listed in this group.

In the Standard Replacement grade, STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, ASTEMO / HITACHI and 6 other brands supply 9 parts: built to original-equipment specification. A representative part number is STANDARD MOTOR PRODUCTS PC559.

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. Read more

10 Crankshaft Position Sensor parts for the 2021 Toyota 4RUNNER come from 9 brands — STANDARD MOTOR PRODUCTS, AUTOTECNICA, HOLSTEIN and 6 other brands. The "Popular" part is STANDARD MOTOR PRODUCTS PC564T.

The Economy section: 4 options from STANDARD MOTOR PRODUCTS, AUTOTECNICA, HOLSTEIN and 1 other brand. STANDARD MOTOR PRODUCTS PC564T is listed in this group.

Standard Replacement: 6 parts, from STANDARD MOTOR PRODUCTS, ASTEMO / HITACHI, DELPHI and 3 other brands. A representative part number is STANDARD MOTOR PRODUCTS PC564.

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. Read more

20 Ignition Coil parts for the 2021 Toyota 4RUNNER come from 18 brands — STANDARD MOTOR PRODUCTS, WALKER PRODUCTS, ULTRA-POWER and 15 other brands. The "Popular" part is ULTRA-POWER 5C1653.

The Economy section: 8 options from ULTRA-POWER, AUTOTECNICA, B&B and 5 other brands. ULTRA-POWER 5C1653 is listed in this group.

The Full Service Kit section lists 1 option from WALKER PRODUCTS — grouped under the catalog's "Full Service Kit" designation — the notes column spells out what sets them apart. WALKER PRODUCTS 92192122 is listed in this group.

In the Premium grade, ASTEMO / HITACHI, DELPHI and STANDARD MOTOR PRODUCTS supply 3 parts: a step above OE specification in materials, tolerances or warranty terms. A representative part number is ASTEMO / HITACHI IGC0176.

Standard Replacement: 8 parts, from DENSO, WALKER PRODUCTS, BECK/ARNLEY and 5 other brands. A representative part number is DENSO 6731309.

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. Read more

12 Spark Plug parts are listed for the 2021 Toyota 4RUNNER, from NGK, CHAMPION, DENSO and 2 other brands. NGK 4469 carries the "Popular" badge.

In the Copper / Nickel grade, CHAMPION supplies 1 part: grouped under the catalog's "Copper / Nickel" designation — the notes column spells out what sets them apart. A representative part number is CHAMPION 975.

In the Double Platinum (lasts up to 3x longer than Copper / Nickel) grade, CHAMPION supplies 1 part: 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. A representative part number is CHAMPION 7975.

The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 7 options from DENSO, NGK, AUTOLITE and 1 other brand — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. NGK 4469 is listed in this group.

In the Platinum (lasts up to 2x longer than Copper / Nickel) grade, NGK and ACDELCO supply 2 parts: grouped under the catalog's "Platinum (lasts up to 2x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. A representative part number is NGK 5018.

In the Ruthenium (maximum durability & ignitability) grade, NGK supplies 1 part: grouped under the catalog's "Ruthenium (maximum durability & ignitability)" designation — the notes column spells out what sets them apart. A representative part number is NGK 96355.

This table covers the silicone and rubber boots that insulate the coil-to-plug spark path. Typical signs include a misfire in the rain, carbon tracking on the boot, or a snap when you pop the coil off. Replace boots as a set on a high-mileage engine; one cracked boot will take the coil with it. Read more

2 Spark Plug / Ignition Coil Boot parts for the 2021 Toyota 4RUNNER come from STANDARD MOTOR PRODUCTS.

The Economy section: 1 option from STANDARD MOTOR PRODUCTS. STANDARD MOTOR PRODUCTS 19461 is listed in this group.

Standard Replacement: 1 part, from STANDARD MOTOR PRODUCTS. A representative part number is STANDARD MOTOR PRODUCTS SPP140E.

Part numbers include STANDARD MOTOR PRODUCTS 19461 and STANDARD MOTOR PRODUCTS SPP140E.

This table covers the seals at the Spark Plug Tube. Typical signs include a wet housing, a drip after sitting, or fluid flung off a rotating shaft. Fix the surface the seal rides on. A new seal on a grooved shaft will leak again. Read more

2 Spark Plug Tube Seal parts for the 2021 Toyota 4RUNNER come from 2 brands — APEX and BECK/ARNLEY.

Part numbers include APEX AES814 and BECK/ARNLEY 0396590.