VAG/PORSCHE 03C905601B SPARK PLUG
Product Specifications
Product quality
OEM Equivalent Grade
Wholesale price USD
$1.39
Wholesale price CNY
¥9.6
bolt MOQ (Minimal order)
100 pcs
local_shipping Production time
15-20 days
package_2 Shipping Weight:
—
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Application (cross references) 6
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| VAG/PORSCHE | 03C905601B |
| VAG/PORSCHE | 03C905601A |
| VAG/PORSCHE | 03F905600A |
| VAG/PORSCHE | 101905626 |
| MAZDA | KJ1218110 |
| MAZDA | ZM0218110 |
Overview & Operating Principle
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The SPARK PLUG is an electrical or electromechanical component responsible for initiating combustion by generating a high-voltage electrical spark across the electrode gap inside the combustion chamber at precisely the correct moment in the combustion cycle. It operates as part of the vehicle’s primary or auxiliary electrical system and must maintain reliable electrical connectivity and mechanical function throughout the service life of the vehicle.
Components in this category are manufactured to OEM-equivalent electrical specifications including voltage rating, current capacity, connector pinout, and insulation grade. They are supplied as direct replacement assemblies requiring no wiring modification for standard fitment.
Electrical components are sensitive to incorrect installation. Always disconnect the vehicle battery before replacing any electrical component. Verify that the supply voltage, ground path, and connector pinout match the vehicle wiring diagram before connecting power.
Symptoms & Diagnostics
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Relevant warning lamp illuminated on the instrument cluster — battery, charging, or system-specific warning.
Complete or intermittent loss of function of the system served by the component.
Burning smell or visible heat damage on connectors or wiring near the component — indicates overcurrent or short circuit.
Flat or rapidly discharging battery — indicates a charging system fault or parasitic draw from a failed component.
Voltage reading outside normal range measured at the battery terminals with engine running (normal: 13.5–14.8 V).
Clicking, chattering, or no-start condition — associated with starter, relay, or solenoid failure in the ignition circuit.
Logistics & Customs
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International HS Code
8511.10
EAEU Customs Code (TN VED)
8511 10 000 0
Typical Net Weight
0.05–0.1 kg
Country of Manufacture
China
Standard MOQ
300 pcs
Production Lead Time
60 days
Always verify the exact 8-digit or 10-digit subheading with your customs broker for the destination country, as tariff schedules and duty rates vary by jurisdiction.
Installation Tips
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- Disconnect the negative battery terminal before beginning work on any electrical component. Wait at least 60 seconds after disconnection before working near airbag system components.
- Record all radio presets, window positions, and ECU adaptive values before disconnecting the battery — these may reset on reconnection.
- Inspect all wiring, connectors, and fuses in the circuit before replacing the component. A wiring fault or blown fuse is often the root cause of component failure and must be corrected or the new component will fail again.
- Verify the supply voltage and ground path at the component connector before installation using a multimeter. A missing ground is a frequent cause of electrical component malfunction.
- Install the new component and reconnect all connectors until they click into the locked position. Never force a connector — misaligned connectors will damage pins and cause intermittent faults.
- Reconnect the battery and test all related functions. Use an OBD-II scanner to clear any stored fault codes and verify no new codes are set after a short drive cycle.
Tools: multimeter, OBD-II scanner, battery disconnect tool, connector pin removal kit, torque wrench.
Frequently Asked Questions
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Is ECU coding or programming required after replacing an electrical component?
Some electrical components (alternators with smart charging, body control modules, immobiliser-linked components) require ECU coding after replacement. Check the individual product page for application-specific coding requirements. Standard relay, switch, and motor replacements typically do not require coding.
Can electrical components be damaged by reverse polarity?
Yes. Many solid-state electrical components are immediately and permanently damaged by reverse polarity connection. Always verify connector polarity before connecting power and never jump-start a vehicle with reversed polarity.
How does the OEM-equivalent aftermarket unit compare to the genuine OEM part?
OEM-equivalent grade units in this catalogue are manufactured to replicate the current OEM design geometry and material specification. Quality is verified against OEM cross-reference data. When ordering in bulk, confirm with our team that the specification matches the latest OEM revision for your application.
Is white-label or custom packaging available for wholesale orders?
Yes. ok.parts works directly with the manufacturing facility and can accommodate neutral white-label packaging or fully branded packaging with your company logo, part numbers, and barcode. Minimum order quantities and lead times for custom packaging may differ from standard stock. Contact the team via the inquiry form to discuss your specific requirements.
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