There isn't a single spark plug part number for the Honda Insight. The correct plug depends on the model year and engine type. Check the owner's manual or Honda's official parts catalog using your VIN or engine code to confirm the exact part.
Understanding the question requires recognizing that the Insight has evolved through several generations, each with its own engine configuration. The spark plug specification is engine- and generation-specific, so accuracy matters.
Generational differences in spark plug requirements
Honda Insight generation-by-generation differences affect the spark plug type and part number. Below is a quick overview of how to approach identification for each generation.
First generation (1999–2006)
Early Insights used a small-displacement gasoline engine with spark plug specifications that vary by market and year. Confirm via engine code/VIN in the official catalog.
- Consult the owner's manual for the recommended replacement interval and plug characteristics.
- Use the VIN or engine code in Honda's parts database to pull the exact spark plug part number.
Conclusion: Rely on the official parts reference to avoid incorrect parts.
Second generation (2009–2014)
The second-generation Insight features a different engine layout from the first generation; plug numbers are not interchangeable with the earlier model. Verify with VIN/engine code.
- Access Honda Genuine Parts catalogs or dealer systems to identify the correct plug number.
- Cross-reference only after the exact Honda part number is confirmed, to ensure fitment.
Conclusion: The catalog is the most reliable source for this generation.
Third generation / Civic-based Insight (2019–present)
The modern Insight uses a 1.5L Atkinson-cycle engine shared with the Civic; spark plug part numbers differ by revision and region. The engine code and VIN provide definitive guidance.
- Look up the exact spark plug in the Honda Parts Catalog using your VIN.
- When shopping aftermarket, verify cross-references only after the Honda part is confirmed.
Conclusion: OEM plugs via VIN are the safest route for this generation.
How to confirm the exact spark plug part number for your Insight
Use a systematic approach to ensure you order the correct part. The following steps help you pin down the precise plug for your vehicle.
- Record your model year, generation, and engine code. The engine code is typically stamped on the engine block or listed on a label in the engine bay, and the VIN is the most reliable identifier.
- Visit Honda's official parts portal or contact a dealership, and search using the VIN or engine code to retrieve the exact spark plug part number and recommended gap.
- If you use aftermarket catalogs, verify the cross-reference against the official Honda part number to avoid incompatibilities.
Conclusion: The VIN-based lookup via Honda's catalog or a dealer is the most reliable method.
Where to find official part numbers and cross-references
Official sources ensure you get the right plug. Use these resources to confirm the correct part number.
- Honda's Parts Catalog (official website or dealer portal) using the VIN or engine code.
- Authorized Honda dealers and service departments.
- OEM and reputable aftermarket catalogs (NGK, Denso) only after confirming the Honda part number.
Conclusion: Rely on official sources first; use aftermarket cross-references only after you have the exact Honda part.
Summary
The Honda Insight spans multiple generations with distinct engines, so spark plug part numbers are not interchangeable. The safest path is to verify via the VIN-engine code in Honda's official parts catalog or with a dealer. This ensures you receive the exact plug specification, maintenance intervals, and gap settings for your specific Insight.