电装 K20PR-U 3145 镍合金火花塞，经济可靠点火轻松应对日常

Denso K20PR-U 3145 nickel alloy spark plug installed in the spark plug hole on the cylinder head; ignites the air-fuel mixture; core component of engine operation. OEM number K20PR-U 3145; fits most Denso-equipped models from 2000 onward; verify against vehicle specs. Installation difficulty is low to moderate; labor time about 30-60 minutes depending on model. If starting is difficult, rough idle, weak acceleration, or obvious fuel economy drop, electrode wear or heavy carbon buildup; replace to restore ignition efficiency.