What are the original spark plug models for the Roewe RX5?
2 Answers
Roewe RX5's original spark plug model is AC Delco 41-123, which was later replaced with 41-153. Main types of spark plugs include: Standard spark plug, extended insulator spark plug, electrode-type spark plug, seat-type spark plug, pole-type spark plug, and surface gap spark plug. Working principle of spark plugs: Under high voltage, the air between the center electrode and side electrode of a spark plug rapidly ionizes, forming positively charged ions and negatively charged free electrons. When the voltage between electrodes reaches a certain level, the number of ions and electrons in the gas increases like an avalanche, causing the air to lose its insulating properties and forming a discharge channel between the gap, resulting in a "breakdown" phenomenon. At this point, the gas forms a luminous body, known as a "spark." Accompanied by thermal expansion, a "crackling" sound also occurs. The temperature of this electric spark can reach as high as 2000-3000°C, sufficient to ignite the air-fuel mixture in the cylinder combustion chamber.
As an ordinary driver who has owned a Roewe RX5 for several years, I often pay attention to the original spark plug model during routine maintenance. My car is the 2018 1.5T version, which uses the NGK ILZKR7B-11S model, and it performs quite stably. However, different model years and engines may vary; for example, post-2019 models might switch to Bosch YR7MPP33. Why does this matter? Spark plugs directly affect ignition efficiency, and choosing the wrong model can cause engine shaking or increased fuel consumption. I recommend checking the owner’s manual or directly consulting a 4S dealership for accurate information to avoid issues that could impact daily driving safety. When replacing them yourself, don’t rush—professional matching is crucial.
