Product Overview

The Ignition Coil OE:077905115G is a high-performance ignition module specifically engineered for Volkswagen Group's robust EA390 V6 engine families. Acting as the primary voltage transformer, it efficiently amplifies the vehicle's standard 12V electrical supply into a high-intensity discharge necessary to ignite the compressed air-fuel mixture within the combustion chambers. Positioned directly above the spark plugs, this coil operates in seamless synchronization with the Engine Control Unit (ECU) to guarantee complete combustion, smooth engine idling, and maximum fuel efficiency. Manufactured to strict OEM specifications, the OE:077905115G serves as a reliable aftermarket replacement, delivering precise fitment and dependable performance for select Audi and Volkswagen models equipped with naturally aspirated V6 engines.

Core Advantages

Flawless Direct Fitment

Manufactured to strictly adhere to original equipment tolerances, this ignition coil guarantees a true plug-and-play installation. It perfectly aligns with factory mounting brackets and electrical harnesses, eliminating the need for wiring modifications, drilling, or extra adapters for a hassle-free replacement.

Robust Spark Generation

Utilizing premium enameled copper windings and a high-permeability silicon steel core, the coil consistently delivers an output voltage exceeding 34,000V. This ensures a powerful and reliable spark during demanding conditions, such as freezing cold starts or high-load acceleration, effectively preventing engine misfires.

Exceptional Thermal & Chemical Resistance

The external housing is molded from reinforced PBT engineering plastic, specifically designed to withstand continuous engine bay temperatures up to 195℃. It resists degradation from oil and coolant exposure, while the internal high-purity ceramic insulation prevents high-voltage arcing and ensures structural longevity.

Advanced Environmental Sealing

Through a specialized vacuum epoxy potting process, the internal circuitry is fully encapsulated to achieve an IP6K9K protection rating. This hermetic seal shields the components from moisture, dust, and corrosive gases, while integrated surge protection safeguards the vehicle's ECU against electrical anomalies.

Rigorous Quality Validation

Produced in an IATF16949-certified facility, every unit undergoes exhaustive stress testing, including thermal cycling, dielectric strength, and over 58,000 operational cycles. This uncompromising validation ensures a 100% defect-free rate and a dependable service life surpassing 115,000 kilometers.

Technical Specifications

Parameter	Details
Product Model	Ignition Coil OE:077905115G
Dimensions	93.5MM x 70.5MM x 64.8MM
Cross-Reference OE Numbers	077905115G, 077905115A, 077905115B, UF-285
Application	Automotive Gasoline Engine Ignition System
Input Voltage	12V DC
Rated Output Voltage	≥34,000V
Operating Temperature Range	-45℃ to +195℃
Housing Material	High-Strength Heat-Resistant PBT Plastic
Insulation System	High-Purity Ceramic + Epoxy Resin Encapsulation
Mounting Configuration	Single Bolt-On Fixed Installation
Electrical Connector	4PIN Waterproof Automotive Connector

Electromagnetic Core Assembly: The operational heart of the coil features a high-permeability silicon steel core enveloped by precision-wound primary and secondary copper coils. This configuration maximizes magnetic flux for rapid and efficient voltage multiplication.

Low-Voltage Interface: Equipped with a side-mounted 4PIN waterproof connector featuring gold-plated terminals and secure locking tabs, it ensures an uninterrupted electrical link to the engine harness, resisting disconnection from severe engine vibrations.

High-Voltage Output Terminal: The top-mounted ceramic tower, protected by a heat-resistant silicone boot, provides a direct and insulated pathway to the spark plug. Its superior dielectric properties prevent voltage bleed-off and ensure the spark reaches the electrode precisely.

Precision Mounting Bracket: The integrated metal-plastic bracket is CNC-machined to align perfectly with the cylinder head. A specialized anti-vibration rubber gasket absorbs mechanical shocks, protecting the delicate internal windings from structural fatigue.

Hermetically Sealed Enclosure: The monolithic PBT housing, combined with vacuum epoxy encapsulation, creates an impenetrable barrier. This design isolates the electromagnetic assembly from harsh engine fluids and extreme thermal cycling, drastically extending service life.

Vehicle Compatibility

Audi: A6 (2001-2004), A8 (2003-2005), Allroad Quattro (2001-2005), S8 (2001-2003)

Volkswagen: Phaeton (2004-2006), Touareg (2004-2006)

Installation Guidelines

Safety Preparation: Always disconnect the negative battery terminal before beginning installation. Wait 3-5 minutes to allow residual electrical charge in the ignition system to dissipate, preventing short circuits or damage to sensitive electronic components.

Temperature Precautions: Ensure the engine has cooled to below 40℃ before handling. Installing the coil on a hot engine can cause burns and may lead to thermal deformation of the plastic housing or rubber seals.

Surface Preparation: Clean the cylinder head mounting surface and spark plug well thoroughly. Remove any oil, carbon deposits, or debris to ensure a proper seal between the coil and spark plug, preventing spark leakage or poor electrical contact.

Proper Installation: Align the coil vertically with the spark plug and mounting hole. Press down firmly until the mounting bracket sits flush against the cylinder head, then secure with the mounting bolt to the specified torque of 9.5-11.5 N·m to prevent loosening from engine vibration.

Post-Installation Verification: Reconnect the battery and start the engine. Check for smooth idling, absence of misfires, and no illuminated check engine lights. Conduct a test drive at various speeds to confirm proper operation.

Set Replacement Recommendation: If multiple cylinders are experiencing ignition issues, consider replacing all coils as a set. This ensures uniform spark performance across all cylinders, prevents uneven power delivery, and extends the life of associated ignition components.

certificate

Packaging,Storage & Logistics

The Ignition Coil OE:077905115G is individually packed in anti-static sealed bags, cushioned with EPE foam inside sturdy corrugated cartons to prevent damage during transit. Outer cartons are clearly labeled with product details, weight, and handling symbols (anti-shock, moisture-proof, fragile) for easy identification and management.

Storage Conditions: Keep in original packaging in a clean, dry, well-ventilated warehouse at -5℃ to 45℃ with relative humidity ≤70%. Protect from direct sunlight, extreme heat, moisture, oil, and strong electromagnetic fields. Shelf life is 36 months under proper conditions.

Handling Instructions: Handle with care. Avoid dropping, crushing, or applying excessive force. Do not pull on the electrical connector or high-voltage tower, as this can damage internal wiring, insulation, or terminal pins.

Transportation: Suitable for road, sea, or air freight. Ensure packaging remains intact and protected from rain, snow, extreme heat, and direct sunlight during transit. Secure cartons properly in the transport vehicle to prevent shifting, collision, or stacking damage.

packing customized