2021 Toyota Highlander 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

31 Camshaft Position Sensor parts for the 2021 Toyota Highlander come from 16 brands — HOLSTEIN, WALKER PRODUCTS, ASTEMO / HITACHI and 13 other brands. The "Popular" part is DORMAN 907856. Grades run from Economy through Standard Replacement; Standard Replacement is the most populated section, led by WALKER PRODUCTS, ASTEMO / HITACHI, BECK/ARNLEY and 6 other brands.

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

14 Crankshaft Position Sensor parts for the 2021 Toyota Highlander come from 9 brands — WELLS, STANDARD MOTOR PRODUCTS, DELPHI and 6 other brands. The "Popular" part is ULTRA-POWER 5S9001.

The Economy section lists 4 options from ULTRA-POWER, HOLSTEIN, SPECTRA PREMIUM and 1 other brand — the catalog's value-priced group. ULTRA-POWER 5S9001 is listed in this group.

In the Standard Replacement grade, WELLS, STANDARD MOTOR PRODUCTS, DELPHI and 2 other brands supply 10 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 1800802.

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

37 Ignition Coil parts for the 2021 Toyota Highlander come from 17 brands — WALKER PRODUCTS, SPECTRA PREMIUM, DELPHI and 14 other brands. The "Popular" part is WALKER PRODUCTS 92192089. Economy, Full Service Kit, Premium and Standard Replacement are all represented, and Standard Replacement alone accounts for 21 parts.

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

13 Spark Plug parts are listed for the 2021 Toyota Highlander, from DENSO, NGK, CHAMPION and 3 other brands. CHAMPION 446 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 446.

The Iridium (lasts up to 4x longer than Copper / Nickel) section lists 7 options from DENSO, NGK, AUTOLITE and 2 other brands — grouped under the catalog's "Iridium (lasts up to 4x longer than Copper / Nickel)" designation — the notes column spells out what sets them apart. AUTOLITE XP5325 is listed in this group.

5 ungrouped parts are not assigned to a grade, with the same engine-level match.

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 Highlander come from STANDARD MOTOR PRODUCTS.

Listed part numbers: STANDARD MOTOR PRODUCTS SPP236E and STANDARD MOTOR PRODUCTS 34261.

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

This group shows a single part: MAHLE / CLEVITE GS34092.