Product Description
Knobtown Cycle stocks the AUTOLITE AUTOLITE PLUG XS4303 to keep your bike performing at its best.
Key Features
- More focused ignition to prevent fouling than leading standard plug
- .6mm finewire design with Sport V-trim ground electrode engineered to offer improved ignitability and durability over a standard plug
- Up to 26% quicker starts than leading standard plug
- More horsepower and better fuel efficiency than standard plug
- Meets or exceeds OEM design
Product Specifications
- Part Number: 21030420
- Brand: AUTOLITE
- Weight: 0.10 lbs
- UPC: 009100261939
Professional Installation Available
Buy online or visit our Kansas City showroom. Contact us for installation service options! Free Ship to Store!
Notes: Discontinued Per Buyer
Part Locations
| Location |
Available |
| Wisconsin (WI) |
20+ |
| New York (NY) |
8 |
| Texas (TX) |
20+ |
| Nevada (NV) |
12 |
| North Carolina (NC) |
10 |
| National Total |
20+ |
Stock levels last updated: February 1, 2026 10:17 AM
Professional Installation Available
Knobtown Cycle offers professional installation services. Contact us via a service request to learn more.
Thank you for Shopping at Knobtown Cycle!
When you shop with us, you’re not just buying motorcycle parts — you’re supporting a small, family-run business rooted right here in the heartland of America. Every order helps us keep riders on the road and fuels our passion for serving the motorcycle community.
From all of us at Knobtown Cycle, thank you for choosing local and riding with us.
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