HG Motorsport ignition coils for Mercedes 1.8 M271.9

Technical optimisation for maximum performance

HG Motorsport high-performance ignition coils

Maximum spark energy and thermal stability for modern high-performance engines.

In modern vehicles, particularly tuned engines, original ignition coils quickly reach their limits. Misfires, uneven combustion and thermal overload can result. HG Motorsport high-performance ignition coils have been developed specifically to overcome these challenges. They provide increased spark energy, enhanced thermal stability and consistently reliable performance, even under the most demanding conditions.

Technical features of the HG Motorsport ignition coils

• Optimised primary and secondary windings: More turns and high-quality copper wire provide improved energy transfer and consistently high ignition voltage.
• Increased spark energy (+10% compared with OE): Perfect spark plug supply throughout the complete dwell period, ideal for high-performance engines.
• Consistent energy output under high load: Particularly suitable for turbocharged and supercharged engines that require stable ignition voltage over longer periods.
• Extended service life: High-quality insulation materials and optimised windings minimise thermal loads and protect against internal short circuits.
• Thermal resistance: Continuous operation up to 120°C and stable operation up to 140°C without loss of performance.
• Optimised spark formation: Stable ignition even at high boost pressures and richer mixtures, significantly improving combustion efficiency.

The diagram shows the superior spark energy of the HG Motorsport ignition coils compared with standard components:

• Up to 1.5 ms: Both coil types deliver comparable energy.
• From 2.0 ms: The energy of standard ignition coils drops significantly, while the HG Motorsport ignition coils continue to deliver consistently high values.
• At 3.0 ms: The HG Motorsport ignition coils deliver almost 25% more energy, which is decisive at high engine speeds and in tuned engines.

Even at a temperature of 140°C, the spark energy of the HG Motorsport ignition coils remains stable at 70 mJ, while OE coils have already failed or reached critical values.

Ideal for the following applications

• High-performance engines: Optimum ignition even under extreme loads.
• Motorsport and track days: Stability and consistent energy during continuous operation.
• Daily drivers with increased performance: Improved efficiency and ignition stability in everyday use.
• As a replacement for OEM ignition coils: Greater reliability and a longer service life.

Winding structure and operation

The ignition coils use an optimised primary and secondary coil structure. The primary winding generates a strong magnetic field; when this field collapses, a high voltage is induced in the secondary winding. The increased number of turns and improved insulation ensure consistent spark energy even at high engine speeds and peak loads.

Thermal tests and long-term results

1. Continuous thermal load: Test setup: continuous operation at 120°C with simulated load changes over 100 hours.
   Result: no reduction in performance and no thermal degradation of the HG Motorsport ignition coils.
   Comparison: OE ignition coils lost approximately 25% of their energy after 50 hours, followed by initial material changes.
2. Additional test at 140°C: HG Motorsport: stable operation for 8 hours without failures.
   OE ignition coils: performance loss of up to 40% after 4 hours, followed by thermal failures.

Summary of laboratory data

• Maximum spark energy: HG Motorsport 120 mJ; standard ignition coil 90 mJ.
• Continuous load at 120°C: HG Motorsport > 100 hours; standard ignition coil 50 hours.
• Functionality at 140°C: HG Motorsport stable for up to 8 hours; standard ignition coil performance loss after 4 hours.
• Insulation resistance (500 V): HG Motorsport > 20 MΩ; standard ignition coil approximately 10 MΩ.

OEM numbers replaced by the ignition coil: A0001501580, A0001502980, 0001501580, 0001502980

Suitable for: Mercedes-Benz C-Class II (W203) / III (C204) / III (S204) / III (W204), Mercedes-Benz E-Class II (W211) / III (W211/S211) / III (W212), Mercedes-Benz Slk II (R171) / III (R172).

Manufacturer’s vehicle data

• HG Hochleistungs Zündspulen Mercedes C/E/SLK 4 Zyl 1,8L M271.9 Motoren

Original product name by HG Motorsport (»z.B.« = e.g.). Please check model, year and engine of your vehicle before ordering; if in doubt, contact us and we will check for you.