Other
Antiknock preparations, oxidation inhibitors, gum inhibitors, viscosity improvers, anti-corrosive preparations and other prepared additives, for mineral oils (including gasoline) or for other liquids used for the same purposes as mineral oils: > Antiknock preparations: > Other
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Products classified under HTS 3811.19.00.00
MMT Methylcyclopentadienyl Manganese Tricarbonyl Additive
MMT is a highly effective organometallic antiknock compound used to boost octane ratings in gasoline engines. It falls under HTS 3811.19.00.00 as an 'other' antiknock preparation specifically designed for mineral oils like gasoline. This additive improves combustion efficiency and reduces engine knocking in high-performance fuels.
Ferrocene Octane Booster Concentrate
Ferrocene-based additive provides metal combustion catalysts to enhance gasoline octane without lead. Classified under HTS 3811.19.00.00 as an antiknock preparation for mineral oils. Used in racing fuels and premium gasoline formulations.
Tetraethyllead TEL Replacement Blend
Modern TEL substitute formulation using non-lead organometallics for aviation gasoline antiknock performance. HTS 3811.19.00.00 covers these 'other' antiknock preparations for aviation mineral oils. Essential for maintaining high-octane 100LL avgas specifications.
Polyether Amine Fuel System Cleaner Additive
High-potency polyether amine antiknock formulation that also cleans injectors and prevents carbon deposits. Falls under HTS 3811.19.00.00 as an antiknock preparation despite cleaning benefits. Used in premium aftermarket gasoline treatments.
Hi-Test Octane Booster Concentrate
Concentrated blend of alkyl nitrates and aromatic hydrocarbons for substantial octane improvement in gasoline. HTS 3811.19.00.00 specifically covers these 'other' antiknock preparations for racing and off-road fuels. Delivers 100+ octane when properly dosed.
Aviation 100LL Octane Enhancer
Specialized antiknock additive formulated for 100LL low-lead aviation gasoline to meet ASTM D910 specifications. Classifies under HTS 3811.19.00.00 as other antiknock preparation for aviation mineral oils. Critical for general aviation piston engines.
Racing Fuel TEL-Free Antiknock Package
Comprehensive TEL-free antiknock system using manganese and iron organometallics for methanol racing fuels. HTS 3811.19.00.00 covers these specialized antiknock preparations compatible with alcohol-based racing fuels. Used in Top Fuel dragsters and methanol circle track racing.
Premium Unleaded Octane Plus Treatment
Consumer octane booster using proprietary ether technology for safe use in modern vehicles. Falls under HTS 3811.19.00.00 as other antiknock preparation for retail gasoline. CARB-approved for California emissions standards.
Marine Gasoline Antiknock Stabilizer
Two-stroke outboard motor antiknock additive preventing detonation under high propeller loads. HTS 3811.19.00.00 classification for marine mineral oil antiknock preparations. Ethanol-compatible formulation prevents phase separation.
Snowmobile High-Octane Fuel Treatment
Cold-weather antiknock formulation for 2-cycle snowmobile engines operating at high altitudes. Classifies under HTS 3811.19.00.00 as specialized antiknock preparation for winter recreational fuels. Provides detonation control from -40°F to racing conditions.