Bring fresh spark to your engine with the Autolite spark plug 4163, a copper spark plug designed to support quick starts and the power your vehicle or equipment needs. It is a direct-fit replacement for many vehicles, among them the 2004-2009 Honda VT750C Shadow Aero, 2001-2007 BMW F650GS and 2000-2005 Bombardier DS650, cataloged for all engines on these models. See the "Vehicles it fits" section for the full list.
- Copper core center electrode: Aids thermal control and improves resistance to fouling.
- Nickel electrode tips: The center and ground electrode tips are nickel, engineered for extended life.
- Multi-rib ceramic insulator: Provides thermal conductivity and insulation for added strength.
- Nickel-plated shell: Resists corrosion for increased durability.
Specifications: M12 - 1.25 metric thread (12 mm diameter), 0.75 in (19 mm) reach, 11/16 in hex, and a flat seat with a crush washer included. Manufacturer heat range is 13. It is a resistor plug rated at 5,000 ohms, with a removable terminal nut. The center electrode is mid projection with a 2.7 mm (0.106 in) insulator tip projection. It has one ground electrode, is skirted and is not indexed.
Quantity per application varies by vehicle, so check the "Vehicles it fits" section for how many your application uses. Backed by Autolite's 2-year limited warranty. Country of origin: China.
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
What vehicles does the Autolite 4163 spark plug fit?
It fits many vehicles, including the 2004-2009 Honda VT750C Shadow Aero, 2001-2007 BMW F650GS and 2000-2005 Bombardier DS650. See the "Vehicles it fits" section for the full list.
What are the thread, reach and seat specs?
It has an M12 - 1.25 metric thread (12 mm diameter), a 0.75 in (19 mm) reach, an 11/16 in hex, and a flat seat with a crush washer included.
Is the Autolite 4163 a resistor spark plug?
Yes. It is a resistor plug with a listed resistance of 5,000 ohms, and it uses a removable terminal nut.
How many spark plugs do I need?
Quantity varies by application, and many of the listed motorcycles and ATVs use two. Check the "Vehicles it fits" section for the quantity your vehicle requires.
What are signs a spark plug may need replacing?
Hard starting, misfires, rough idle or hesitation can be signs of a worn or fouled plug. Other ignition or fuel problems can cause the same symptoms, so diagnose the cause before replacing parts.
