What manufacturer makes Toyota spark plugs?
Toyota spark plugs are typically manufactured by Denso, with NGK also supplying plugs for certain engines and regional markets.
In practice, the exact supplier for Toyota spark plugs can vary by engine family, production year, and market. Denso has long been a primary OEM partner for Toyota, while NGK also provides plugs for specific engines or regions. To confirm the correct plug for a given vehicle, consult the owner's manual or Toyota's official parts catalog, and consider VIN-based verification with a dealer or retailer.
Primary OEM spark plug suppliers for Toyota
The two brands most commonly listed as original equipment manufacturers for Toyota spark plugs are outlined here.
- Denso
- NGK (NGK Spark Plug Co., Ltd.)
In practice, the exact choice between Denso and NGK can vary by engine type and market, and Toyota Genuine Spark Plugs may be sourced from either brand depending on regional production runs and part numbers.
How to confirm the correct spark plug for your Toyota
To ensure you install the right plug, follow these steps to verify the specification and supplier for your engine.
- Consult the owner's manual or Toyota official parts catalog for the exact spark plug type, heat range, and gap specification for your engine and market.
- Identify your engine code (for example, 1ZZ-FE, 2ZR-FE, etc.) and model year when looking up OEM data, since requirements can vary by engine family.
- Inspect the current spark plug or the stamping on the replacement packaging for manufacturer markings (Denso or NGK) to confirm the original supplier.
- When in doubt, contact a Toyota dealer or a trusted parts retailer to verify compatibility with your VIN and region.
From there, you should be able to obtain either a Denso or NGK spark plug that matches Toyota's specifications. Aftermarket options may be offered by both brands; ensure the replacement meets Toyota's heat range and electrode design requirements.
Summary
For Toyota vehicles, the main OEM spark plug manufacturers are Denso and NGK. Denso is the most common supplier across many Toyota engines, while NGK is used for certain models and markets. Always verify the exact specification for your engine using official Toyota documentation or your dealer to ensure proper fit, performance, and reliability.
