Description
Original Mercedes NOS spark plug – New Old Stock – Mercedes M104 M111 M119 M120
This original Mercedes NOS (New Old Stock) spark plug is an unused original Mercedes part from old factory stock with OEM number A0031596803 / 0031596803. The spark plug is manufactured according to the original Mercedes specifications and quality standards from the period when these engines were still in production.
Thanks to the original material selection, precise manufacturing, and optimal thermal rating, this Mercedes NOS spark plug offers reliable ignition, smooth engine operation, and optimal combustion. For enthusiasts who wish to maintain or restore their Mercedes as close to original as possible, an original Mercedes NOS spark plug is among the best available choices.
Suitable for Mercedes models
• Mercedes R129 SL 280, 300-24, 320, 500 and 600
• Mercedes W140 S-Class 280, 300 SE/SEL, S320, 400 SE/SEL, S420, 500 SE/SEL, S500, 600 SE/SEL and S600
• Mercedes C140 SEC / CL 420, 500 and 600
• Mercedes W124 Sedan 200 E, 220 E, 280 E, 300 E-24, 320 E, 400 E and 500 E
• Mercedes C124 Coupé 200 CE, 220 CE, 300 CE-24, 320 CE and E36 AMG
• Mercedes A124 Cabriolet 300 CE-24, E200, E220, E320 and E36 AMG
• Mercedes S124 Combi 200 TE, 220 TE, 280 TE, 300 TE-24, 320 TE, E200 T, E220 T, E280 T, E320 T and E36 T AMG
• Mercedes W202 C-Class C180, C200, C230, C280 and C36 AMG
• Mercedes A208 CLK Cabriolet 200
• Mercedes S210 E420 T
• Mercedes W463 G320
Suitable for Mercedes engines
• M104
• M111
• M119
• M120
Specifications
- Part: original Mercedes NOS spark plug.
- OEM number: A0031596803 / 0031596803.
- Original Mercedes part from old factory stock (New Old Stock).
- Produced according to the original Mercedes specifications.
- Optimal ignition, smooth engine operation, and reliable combustion.
- Ideal for maintenance, overhaul, and original restorations.
- 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 original NOS spark plugs may have a deviating electrode gap due to prolonged storage. If necessary, carefully adjust the gap according to Mercedes factory specifications.
For optimal results, 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.








