Choosing the right motorcycle fuel injection conversion kit can simplify upgrades, improve performance, and enable compatibility with legacy systems. This guide highlights five popular options, detailing compatibility, key features, and what to consider before purchasing. Each kit links to its Amazon product page for quick access and comparison.
| Product | Brand | Compatibility | Key Benefit |
|---|---|---|---|
| Star Products STATU74489 Fuel Injection Update Kit | Star Products | F.I. pressure test kit compatible | Right-angle adapters for tight spaces |
| Fuel Tank Carb Conversion Fitting Fit for Harley Davidson | ECOMARK | Harley-Davidson, 1995–2001 | Billet stainless steel tank fitting |
| HOLDWELL Fuel Injection to Carburetor Conversion Kit 62052 | HOLDWELL | 1995–2001 Harley-Davidson Touring w/Magneti Marelli | Direct compatibility with Magneti Marelli system |
| WnSEu LS Fuel Injection Line Fitting Adapter Kit | WnSEu | LS engines (EFI) | Includes regulator, hoses, and fittings |
| Pingel Tank Fitting Kit 62054 | Pingel | EFI to carb conversion | Delphi carburetor conversion fittings |
Star Products STATU74489 Fuel Injection Update Kit

The Star Products STATU74489 kit is designed to bring modern fuel injection capabilities to compatible engines with ease. It emphasizes compatibility with Star F.I. pressure test kits via quick couplers, making installation and diagnostics more efficient. The kit also includes right-angle adapters tailored for Ford and GM applications, which helps installers reach tight or obstructed spaces often found in custom builds or limited clearance bikes.
Key features include a streamlined setup for testing and calibration, plus added adaptability for hard-to-reach areas. This kit is particularly useful for technicians who perform field service or in-shop upgrades where precise fuel pressure testing is essential. While designed for Star systems, the included adapters and test components can simplify integration with a range of EFI configurations.
Fuel Tank Carb Conversion Fitting Fit for Harley Davidson

The ECOMARK kit targets Harley-Davidson models from 1995 through 2001, enabling a conversion from fuel injection to carburetor. The convert-to-carb approach can be advantageous for riders seeking a traditional carbureted feel or needing compatibility with legacy components while upgrading fuel delivery reliability. The tank fitting is crafted from billet stainless steel, offering durability and resistance to corrosion in varied riding conditions.
Installation considerations include confirming vehicle compatibility and ensuring seal integrity between the tank fittings and carburetor lines. This kit is positioned for users who want a straightforward retrofit without replacing the entire EFI system, preserving original frame geometry and routing where possible.
HOLDWELL Fuel Injection to Carburetor Conversion Kit 62052

The HOLDWELL 62052 conversion kit is designed specifically for 1995–2001 Harley-Davidson Touring models powered by Magneti Marelli systems. It provides a direct pathway to revert EFI configurations back to carburetion, which can be beneficial for riders who prefer carburetor behavior or who are working with compatibility constraints in older builds. This kit emphasizes straightforward integration with Harley-Davidson’s Magneti Marelli setup, aiding fitment in stock or modified frames.
Prospective buyers should evaluate the magneti Marelli interface and verify that all mounting points align with the intended bike. The kit focuses on preserving performance characteristics while offering a carburetor-driven alternative where needed.
WnSEu LS Fuel Injection Line Fitting Adapter Kit

The WnSEu LS kit targets LS engines with EFI, offering a comprehensive package that includes a 58 psi fuel regulator, a 25-foot high-pressure fuel line, and assorted 6AN fittings. The kit comes with a 6AN to 3/8″ male straight fitting and a 6AN to 5/16″ return line fitting, creating a versatile solution for LS-based conversions. This configuration supports higher fuel flow demands and improved fuel stability in modernized powertrains.
Engineers and enthusiasts should assess the compatibility with their fuel system architecture, including return-line routing and regulator placement. The kit is well-suited for projects requiring a robust EFI feed with flexible hose lengths and multiple connection options.
Pingel Tank Fitting Kit 62054

The Pingel 62054 tank fitting kit focuses on EFI-to-carb conversion fittings, prioritizing Delphi carburetor compatibility. This kit is designed to facilitate the transition by providing the correct valve and interface sizing for seamless integration between EFI lines and carbureted inlets. It is a practical choice for builds that require precise adapter sizing and reliable sealing to prevent leaks in fuel delivery plumbing.
Potential buyers should verify the specific Delphi carburetor model compatibility and ensure that the valve sizing aligns with their fuel system’s pressure and flow requirements. The kit supports restoration or retrofit efforts where EFI components must be complemented by carburetor interfaces.
Buying Guide
- Compatibility: Confirm year, model, and engine management system compatibility. Kits labeled for Harley-Davidson Magneti Marelli, Delphi, or LS EFI systems may require adapters or additional parts for a clean installation.
- Conversion direction: Decide whether you are upgrading EFI-to-carburetor, carburetor-to-EFI, or adding EFI support to a legacy platform. Some kits emphasize quick-coupler testing or ease of maintenance, while others focus on raw fuel-path integrity.
- Quality of fittings: Look for billet aluminum or stainless steel components for durability and corrosion resistance. Ensure supplied hoses and clamps meet your pressure requirements and chemical compatibility.
- Pressure and flow considerations: Ensure the kit’s regulator settings and hose sizing match your intended fuel pressure and engine demands. Higher-performance builds may require larger bore hoses and stricter regulator control.
- Installation complexity: Some kits are plug-and-play with minimal modification, while others may require custom routing or fabrication. Assess your tooling, space constraints, and whether you’ll need professional installation.
- Documentation and support: Access to installation guides, diagrams, and customer support can reduce installation time and misconfiguration risks. Look for clear part numbers and compatibility notes.
- Future-proofing: Consider whether the kit supports upgrades or additional adapters to accommodate future changes in your build or engine management strategy.
- Cost vs benefit: Compare the total package—fittings, hoses, regulators, and adapters—against your goals (authentic carb feel, updated EFI reliability, or restoration accuracy).