Ignition Coil — OEM 1026401U8050

OEM number 1026401U8050 should be treated as a searchable ignition-coil reference, not a blanket fitment promise. Local cross-reference data associates it with JAC and other reference families, and the collection currently points to Bosch F01R00A025. Confirm the exact vehicle identity, VIN, engine code, production date and number on the installed coil before deciding whether that candidate is appropriate.

Keep the complete alphanumeric sequence. Search displays may introduce spaces or change letter case, but dropping “U” or shortening the reference can merge unrelated records. A linked replacement number also needs its date, application notes and supersession direction checked. The physical comparison must cover body size, mount, connector coding, pin count, boot or HT interface and clearance from heat and moving parts.

The Bosch F01R00A025 product evidence records a 14 V rating. That is one candidate-product attribute, not proof that every collection application uses the same coil, pinout or control method. Coil energy depends on cranking voltage, dwell time, primary current, switching losses, cylinder pressure, plug gap and insulation quality. A 14 V label cannot replace a circuit diagram or a loaded voltage measurement.

Before parts are disturbed, store codes, freeze-frame data and misfire counters where the vehicle provides them. Check battery state, charging control, coil supply and ground voltage drop, connector contact, loom strain, plugs and plug wells. Include injector operation, fuel pressure, air leaks, compression and valve timing in the diagnosis. Never short a driver terminal or apply battery power to an unidentified pin.

Work with ignition disabled as specified, the key controlled and hot surfaces cooled. Compare every interface before fitting and tighten only to the correct repair value. Afterward, assess cold start, idle, controlled load and hot restart while watching system voltage and cylinder misfire data. A flashing warning, violent shaking, raw-fuel smell or overheating catalyst requires the vehicle to be stopped safely. MOT emissions and warning-lamp checks remain roadworthiness checks, not confirmation of part identity.