丰田/大发车型点火线圈90048-52126，KLP原厂替换保障稳定火花输出

Toyota Corolla, Crown and DaFeng Sirion four-cylinder engines use ignition coils with original OEM number 90048-52126 for direct replacement. KLP brand units mounted atop the cylinder head convert low voltage to high voltage to ensure stable ignition. Installation difficulty: medium; labor about 30-45 minutes; requires removing ignition coil plugs and mounting bolts. If engine idling is unstable, acceleration is weak, fuel consumption increases, or warning light comes on, ignition coil aging or insulation breakdown is likely; replace promptly to maintain combustion efficiency.