Deliver quick starts and dependable ignition with the Autolite Copper Spark Plug 411. This spark plug ignites the air-fuel mixture in the combustion chamber, and it's cataloged for a wide range of applications — from the 1962-1965 ABARTH 1000 [L4-1.0L], 1956-1961 ABARTH 750 [L4-0.7L] and 1962-1965 ABARTH SIMCA [L4-2.0L] to Kohler engines, Tomos and Garelli mopeds, and Ski-Doo, Rupp and Sachs snowmobiles. See the "Vehicles it fits" section for the full list of 51 applications and engine codes.
- Copper core center electrode: aids thermal control and improves resistance to fouling.
- High-nickel alloy center and ground electrode: engineered for extended life.
- High-alumina multi-rib ceramic insulator: provides thermal conductivity and insulation for increased strength.
- Nickel-plated shell: corrosion resistant for added durability.
Built to a standard center-electrode design with short projection and nickel electrode tips. Specs: 14 mm thread diameter, M14 - 1.25 metric thread, 13/16 in hex, flat seat with an included flat washer, 1 ohm resistance (non-resistor type), and manufacturer heat range 15. Pre-gapped to 0.025 in (0.6 mm) — always verify the gap against your engine's specification before installing. Backed by a 2-year limited warranty. Country of origin: China.
Interchange: Manufacturer part number 411.
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
S40F, S40FR, 14-5 AU, W3AC, L2G, 4037, IWF27, W24FSR, W24FS-U, W27FSR, W27FS-U, A091, AE091, AE901, AE901X, 707, B10H, B10HS, B10HV, B9HIX, B9HS, B9HV, B9HVX, BR9HS, BR9HS-10, BR9HS-10 S25
Frequently Asked Questions
What does this spark plug do?
It ignites the air-fuel mixture in the combustion chamber. Signs it may need replacing include hard starting, rough idle, misfire, or fouling — if the plug is the cause.
Is the plug pre-gapped?
Yes, it comes pre-gapped to 0.025 in (0.6 mm). Always verify the gap against your engine's specification before installing.
Is a washer included?
Yes. It uses a flat seat and ships with a flat washer included.
Is this a resistor spark plug?
No. The Resistor Type is listed as No, so it is a non-resistor plug with a rated 1 ohm resistance.
How many plugs do I need?
Quantity varies by application — some listed applications use 4, others 1 or 2. Check the "Vehicles it fits" section for your specific engine; this listing is sold individually.
