Spark plug – Mercedes M100 M110 M115 M116 M117 M121 M123 alternative to the Bosch W8DC0

Description

Spark plug – affordable alternative – Mercedes M100 M110 M115 M116 M117 M123

This spark plug is a high-quality and affordable replacement for the original Mercedes spark plugs with OEM numbers. A0031591103 / 0031591103, A0031594603 / 0031594603 and A0031592903 / 0031592903. The spark plug is equivalent to Bosch W8DC0 and ensures reliable ignition, smooth engine operation, and optimal combustion.

Thanks to its wide applicability, this spark plug is suitable for a large number of classic Mercedes models from the 60s, 70s, and 80s and forms an excellent alternative to the original Mercedes spark plug.

Suitable for Mercedes models

• Mercedes W100 600 Pullman

• Mercedes W115 /8 200, 220 and 230.4

• Mercedes W123 200, 230, 250 and 280
• Mercedes C123 230 C, 280 C and 280 CE
• Mercedes S123 230 T, 250 T and 280 TE

• Mercedes W116 280 S, 280 SE, 280 SEL, 350 SE, 350 SEL, 450 SE, 450 SEL and 450 SEL 6.9

• Mercedes W126 280 S, 280 SE, 280 SEL, 380 SE, 380 SEL, 420 SE, 420 SEL, 500 SE and 500 SEL

• Mercedes C126 380 SEC, 420 SEC, 500 SEC and 560 SEC

• Mercedes R107 280 SL, 350 SL, 380 SL, 450 SL, 500 SL and 560 SL

• Mercedes C107 280 SLC, 350 SLC, 380 SLC, 450 SLC and 450 SLC 5.0

Suitable for Mercedes engines

• M100
• M110
• M115
• M116
• M117
• M123

OEM references

Mercedes

• A0031591103
• 0031591103
• A0031592903
• 0031592903
• A0031594603
• 0031594603

Bosch

• W8DC0

Specifications

1. Part: spark plug.
2. Affordable alternative to the original Mercedes spark plug.
3. Bosch equivalent: W8DC0.
4. Suitable for M100, M110, M115, M116, M117, and M123 engines.
5. Ensures reliable ignition, smooth engine operation, and optimal combustion.
6. Suitable for the Mercedes models mentioned above.

Important

Always check new spark plugs for transport damage before installation. Dented packaging may indicate that the ceramic insulator part has sustained a hairline crack. Damaged ceramic can come loose during use and cause serious engine damage.

Always check the prescribed electrode gap before installation. Even new spark plugs may have a deviating electrode gap during transport or storage. If necessary, carefully adjust the gap according to Mercedes factory specifications.

We recommend replacing spark plugs preventively every 8 years or 30,000 kilometers to replace, depending on which is reached first. Even in vehicles that are driven infrequently, the electrodes and insulation material can deteriorate due to aging, which can lead to a weaker spark, rough engine operation, higher fuel consumption, and reduced cold starting.

For optimal performance, we recommend always replacing spark plugs as a complete engine set. Simultaneously check the condition of the spark plug wires, distributor cap, and distributor rotor to prevent voltage loss and ignition malfunctions.

Always check before purchase and installation whether the part is suitable and equivalent based on photos, description, and specifications; installed or used parts cannot be returned.