What are the part numbers for Denso spark plugs?

[OElizabeth]

Denso spark plug part numbers include: IK20tt, IKh0TT, ITV20TT, IxeH20TT, FK20HE11, fxE20. Denso spark plug models are typically engraved on the casing, and Denso is no exception. The first letter represents the spark plug structure type and installation dimensions, the Arabic numerals indicate the spark plug heat range, and the ending consists of several letters and numbers, representing the product structure of the spark plug. Denso spark plugs can be divided into standard spark plugs, iridium spark plugs, platinum spark plugs, double platinum spark plugs, and iridium platinum spark plugs. The main characteristic of platinum spark plugs is their long lifespan, while iridium spark plugs are known for their excellent performance. Iridium platinum spark plugs combine both performance and longevity.

[Lori]

As an average car owner who frequently handles vehicle maintenance myself, I find Denso's spark plug numbering system quite user-friendly. It mainly consists of a combination of letters and numbers, such as the common IK20 or PK20. The letters in these codes represent the type: for example, IK stands for the Iridium series, known for stable thermal performance, while PK denotes the Platinum series, prized for its durability. The numerical part, like 20, indicates the heat range—a medium level suitable for most vehicle models, with higher numbers indicating faster heat dissipation. Last time I changed spark plugs, I referred to the recommended code in my vehicle's manual; for a Toyota Corolla, IK20 was the right choice. If you're unsure, you can enter your car's make and year on the Denso official website, and the system will automatically recommend the appropriate code. Regularly replacing spark plugs can improve fuel efficiency, typically requiring inspection every 40,000 to 80,000 kilometers to prevent engine misfires. Be cautious with the torque during installation to avoid over-tightening. Remember, different engines have varying requirements, so matching the correct code is essential to avoid affecting performance.

[AdalineDella]

As a DIY enthusiast with extensive experience in automotive parts installation, I find Denso's spark plug numbering system intuitive and practical. It primarily uses alphanumeric codes like W20EP-U or SK16R-P11, where each segment carries specific meaning. The initial letter (e.g., W) denotes standard copper core construction, while the heat range number (e.g., 16 indicates low heat range suitable for compact cars, 20 represents medium range with broad compatibility). The crucial factor is matching the plug to your vehicle model and engine type - for instance, Honda Civics typically recommend the W20EP-U series. Heat range directly affects heat dissipation: too high may cause carbon buildup, too low risks overheating damage. You can use Denso's online tool by entering your VIN to identify the correct part number. Replacement is straightforward: disconnect the wire, unscrew the old plug, and install the new one ensuring proper electrode gap alignment (standard 0.8-1.0mm). During routine maintenance, inspect spark plug coloration - black deposits signal need for adjustment or replacement. This optimization enhances ignition efficiency and improves fuel economy.

[DeRiver]

As an experienced driver with decades of driving under my belt, I have a deep impression of the numbering evolution of Denso spark plugs. Early models used simple numbers like B16, which later transitioned to a more refined system such as IK20 or IQ20. The 'IQ' represents the Iridium-Platinum hybrid series, and the number '20' indicates a medium heat range. The core of the numbering system is to match engine characteristics—for example, small cars use lower heat range numbers like 16, while high-performance vehicles use higher numbers like 24. I recall an incident when I replaced spark plugs in a Ford and used the wrong number, which caused engine vibration. The issue was resolved only after switching to Denso's recommended IK20. Always consult the manual or a specialist before replacement. Spark plugs affect smooth starts and typically last about 40,000 to 50,000 kilometers. Regular checks can save you a lot of trouble.