V-Twin Mfg King Gas Tank for 1958-2003 Harley-Davidson Sportster
Running 2 inches wider than a standard Sportster tank, the King gas tank gives riders more fuel capacity and a bolder visual stance without sacrificing the original mounting points. High-tunnel construction maintains the classic Sportster silhouette while meaningfully extending range on long runs.
Key Features
- 2 inches wider than stock for a fuller profile and increased fuel capacity
- High-tunnel design with stock-style mounts – bolts to OEM mounting points
- Available in 3.1 gallon (right side petcock) and 3.2 gallon (left side petcock) versions
- 1958-1981 models use a blade or bayonet-style gas cap; 1982-up use screw-in style
- Covers 1958-2003 Harley-Davidson XL Sportster models across four year ranges
Technical Specifications
- Length: 17.5 inches
- Width: 10.75 inches (2 inches wider than stock)
- Capacity: 3.1 gallon (right side petcock) or 3.2 gallon (left side petcock)
- Construction: Steel with stock-style mounts
- Finish: Raw – requires sanding, primer, and painting before use
Fitment Notes
- Select the variation matching your specific year range and petcock style before ordering
- Check the tank for flaws and verify fit before painting; do not grind or sand seams or joints
- Pressure test the tank and apply a tank sealer (Kreem combo kit recommended) before use
- Petcock and gas cap must be ordered separately
- Review the Fitment tab for complete year, model, and petcock configuration details








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