ToyotaHighlander2021
  1. Toyota Highlander
  2. Parts
  3. spark plugs
  4. 2021

2021 Toyota Highlander spark plugs

Catalog listings with year/make/model fitment rows. A listing is not OEM confirmation.

Catalog year/make/model rows for 2021 Toyota Highlander.

Autolite

Copper Resistor Spark Plug: Quick Starts & Enhanced Durability, 5325

MPN: 5325

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Autolite

Double Platinum Spark Plug: Enhanced Durability & Performance, APP5325

MPN: APP5325

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Autolite

Double Platinum Spark Plug: Enhanced Durability & Performance, APP5684

MPN: APP5684

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Autolite

Platinum Spark Plug: Enhanced Durability & Improved Performance, AP5325

MPN: AP5325

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Autolite Iridium

Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision, AI5325

MPN: AI5325

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Autolite Iridium

Iridium Ultra Fine Wire Spark Plug: Laser Welded for Precision, AI5684

MPN: AI5684

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Fitment comes from `affiliate_feed_product_fitment` year/model rows (SparkPlugs-style YMM). Do not treat a title match as guaranteed compatibility.