4 Set B-12 Chemtool Carburetor & Fuel System Cleaner. Why choose B-12 Chemtool Carburetor & Fuel System Cleaner?. A clean engine is essential for optimal performance, longevity, and efficiency. The 4 Set B-12 Chemtool Carburetor & Fuel System Cleaner employs advanced High-Energy Solvent Technology to ensure your engine components remain spotless and functional.
