Chapter 8409 — Customs Tariff Headings

Aircraft Engine Fuel Nozzle Assembly

A duplex fuel nozzle assembly that injects atomized fuel into the combustor of an aircraft turbofan engine. It is designed solely for use with aircraft engines of heading 84.07, making it a part suitable for those engines.

Aircraft Engine High-Pressure Turbine Disk

A forged nickel alloy disk that holds turbine blades in the high-pressure stage of an aircraft engine, such as the GE90. It is designed solely for use with aircraft engines of heading 84.07.

Aircraft Engine Ignition Exciter

An electronic exciter that generates high-voltage sparks for aircraft engine igniters during startup. It is a part suitable solely for use with aircraft engines of heading 84.07.

Aircraft Engine Variable Stator Vane Actuator

A hydraulic actuator that adjusts variable stator vanes for optimal airflow across engine speeds in an aircraft engine. It is designed solely for use with aircraft engines of heading 84.07.

Aircraft Gas Turbine Combustion Liner

A heat-resistant combustion chamber liner for an aircraft gas turbine engine, preventing fuel-air mixture leaks. It is principally for use with aircraft engines of heading 84.07 or 84.08.

Aircraft Jet Engine Bearing Support Bracket

A titanium bracket that supports main bearings in a jet engine rotor assembly, critical for alignment. It is designed solely for use with aircraft engines of heading 84.07.

Aircraft Turbine Engine Compressor Blade

A precision-engineered compressor blade designed specifically for turbojet engines used in commercial aircraft like the Boeing 737. It is a part suitable solely or principally for aircraft engines of heading 84.07.

Aircraft Turbofan Acoustic Liner Panel

Sound-absorbing liner panels for turbofan engine nacelles that reduce noise pollution. They are designed for use with aircraft engines of heading 84.07, contributing to engine performance.

Engine-Mounted Oil Scavenge Pump

A gear-type pump that scavenges oil from aircraft engine sumps back to the tank. It is designed solely for use with aircraft engines of heading 84.07.

Jet Engine Starter Air Turbine

A pneumatic starter turbine that spins jet engine compressors via bleed air. It is a principal part for aircraft engines of heading 84.07.

Turbine Engine Exhaust Diffuser Cone

An Inconel diffuser cone that slows exhaust gases post-turbine in aircraft engines. It is classified as an aircraft engine part under heading 84.07 or 84.08.

Turbofan Engine Fan Blade

A large titanium fan blade for the low-pressure stage of turbofan engines, such as those in Airbus A320. It is a part principally used with aircraft engines of heading 84.07.

Turbojet Engine Turbine Nozzle Guide Vane

A nozzle guide vane that directs hot gases onto turbine blades in turbojet engines for military fighters. It falls under this tariff item as an aircraft-specific engine part.

Turboprop Engine Reduction Gearbox Housing

An aluminum housing for a planetary gearbox in turboprop engines, reducing turbine speed for the propeller. It is principally for use with aircraft engines of heading 84.08.

Cast Iron Marine Piston Casting

A rough cast-iron piston blank designed exclusively for spark-ignition marine propulsion engines, machined only to remove casting imperfections and permit finishing. Produced from high-strength cast iron alloy suitable for marine duty cycles.

Cylinder Liner Rough Casting

Cast-iron cylinder liner blanks for marine spark-ignition propulsion engines, machined only externally for finishing location. The internal honing surface is designed specifically for marine duty cycles and remains unfinished.

Inboard Engine Block Rough Casting

A cast-iron engine block casting for spark-ignition inboard marine propulsion engines, with gates and risers removed and minimal location machining. The block is in a rough state, awaiting final machining of bores and surfaces.

Rough Cast Iron Crankcase Housing

A rough cast-iron crankcase housing for spark-ignition internal combustion piston engines. It has been minimally processed, with only sprue removal and mounting flats machined, leaving main bearing bores and oil passages unfinished for subsequent finishing operations.

Rough Cast Iron Cylinder Head

A cast-iron cylinder head blank for spark-ignition internal combustion piston engines. It is cleaned and minimally machined only to remove casting fins, gates, sprues, and risers for finishing placement, with no combustion chambers or valve seats machined.

Rough Cast Iron Engine Block

A basic cast-iron engine block casting for spark-ignition piston engines, processed only by cleaning and minimal machining to eliminate sprues, risers, and fins for subsequent finishing. No bores, ports, or surfaces have been machined.

Rough Cast Iron Exhaust Manifold

An unfinished cast-iron exhaust manifold for spark-ignition internal combustion engines, with gates and fins removed via minimal machining for finishing setup. Exhaust ports and collectors remain untouched, awaiting final machining.

Rough Cast Iron Flywheel Casting

A basic cast-iron flywheel blank for spark-ignition engines, with only the starter ring boss located. It is in a rough state, awaiting machining of the friction surface and bolt holes for final assembly.

Rough Cast Iron Intake Manifold Casting

A basic cast-iron intake manifold blank for automotive spark-ignition engines, cleaned of risers and gates and lightly machined for fixture points only. Runner passages remain fully cored and unmachined, awaiting final finishing.

Rough Cast Iron Main Bearing Cap

Individual cast-iron main bearing cap castings, cleaned for engine blocks used in spark-ignition engines. These are rough castings awaiting machining of bearing surfaces and bolt holes for final installation.

Rough Cast Iron Piston Casting

An unfinished cast-iron piston blank for spark-ignition engines, cleaned and trimmed only for gates and risers removal and fixture location. The skirt and crown are awaiting machining, designed principally for internal combustion piston engines.

Rough Cast Iron Timing Cover

A cast-iron front timing chain or belt cover blank, minimally cleaned for spark-ignition engines. No seal surfaces have been machined, leaving the cover in a rough state for finishing operations.

Rough Cast Iron Valve Cover

A cast-iron rocker or valve cover casting cleaned and trimmed minimally for spark-ignition engine cylinder heads. No baffle or mounting hole machining has been performed, making it suitable for finishing in subsequent operations.

Rough Cast Iron Water Pump Housing

An unfinished cast-iron water pump body for engine cooling systems in spark-ignition applications, cleaned only. The casting is in a rough state, awaiting machining of the impeller cavity and mounting surfaces.

Cast Iron Bedplate for Mack Truck Engine

A main bearing bedplate rough casting for a Mack MP8 engine in Class 8 tractors, machined only to remove sprues and for assembly jig location. It forms the base frame supporting the crankshaft in a diesel engine of heading 84.08. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Crankcase for Ram 1500

A cast iron crankcase housing for a 5.7L HEMI V8 in a Ram 1500 pickup, in a rough state with only sprue removal machining. It is designed solely for principal use with automotive engines of headings 84.07 and 84.08. This unfinished part is classified under this tariff item as a part of an internal combustion engine.

Cast Iron Crankshaft Rough Casting for Marine Diesel Engine

A rough cast iron crankshaft blank for large marine diesel engines, cleaned and with gates and risers removed solely for finishing machine fixturing. No journal turning or balancing has been performed, making it an unfinished part of a compression-ignition engine. It is classified under this tariff item as a part of a diesel engine of heading 84.08.

Cast Iron Cylinder Head Blank for Diesel Engine

A rough cast iron cylinder head blank for diesel engines of heading 84.08, cleaned and minimally machined only to remove casting fins, gates, sprues, and risers for finishing placement. It has not undergone further machining such as porting or valve seat cutting. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Cylinder Head for Ford F-150

A rough cast iron cylinder head for the 5.0L V8 engine in Ford F-150 trucks, machined only for removal of gates, sprues, and risers to enable finishing. It has not undergone further machining such as porting or valve seat cutting. This unfinished part is classified under this tariff item as a part of a spark-ignition engine.

Cast Iron Engine Block for Toyota Tacoma

A rough cast iron engine block specifically designed for the 2.7L inline-four engine in Toyota Tacoma pickup trucks, advanced only to cleaning and machining for fin removal to fit finishing fixtures. No cylinder boring or internal machining has been performed. This unfinished part is classified under this tariff item as a part of a spark-ignition engine.

Cast Iron Engine Block Rough Casting for Gasoline Engine

A rough cast iron engine block suitable principally for spark-ignition engines of heading 84.07, processed only by cleaning and machining to remove sprues, gates, and fins for locator purposes in finishing machinery. No internal machining or cylinder boring has been performed. This unfinished part is classified under this tariff item as a part of a spark-ignition engine.

Cast Iron Exhaust Manifold Blank for Automotive Engine

A rough cast iron exhaust manifold blank suitable for automotive engines of headings 84.07 and 84.08, with minimal machining only for sprue removal and finishing alignment. No port shaping or flange drilling has been performed. This unfinished part is classified under this tariff item as a part of an internal combustion engine.

Cast Iron Exhaust Manifold for Nissan Titan

A rough cast iron exhaust manifold for the 5.6L V8 Endurance engine in Nissan Titan trucks, limited to cleaning and fin machining for finishing jigs. No port shaping or flange drilling has been performed. This unfinished part is classified under this tariff item as a part of a spark-ignition engine.

Cast Iron Flywheel Rough Casting for Diesel Generator Engine

A basic cast iron flywheel blank for stationary diesel generator engines of heading 84.08, machined solely to remove casting defects and permit finishing location. No ring gear pockets or starter teeth have been added. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Intake Manifold Blank for Tractor Engine

A rough cast iron intake manifold casting for agricultural tractor engines of heading 84.08, with fins and sprues removed only for basic finishing setup. No runner shaping has been performed. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Oil Pan Rough Casting for Truck Engine

An unfinished cast iron oil sump pan for heavy truck engines of heading 84.08, cleaned with fins and risers machined off only for locator purposes. No drain plug bosses or gasket surface finishing has been performed. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Piston Blank for Compression-Ignition Engine

An unfinished cast iron piston blank designed for diesel engines under heading 84.08, with only cleaning and removal of risers and gates for finishing machinery location. It lacks piston ring grooves or crown finishing. This unfinished part is classified under this tariff item as a part of a compression-ignition engine.

Cast Iron Timing Gear Blank for Spark-Ignition Engine

An unfinished cast iron gear blank for engine timing chain or belt systems in spark-ignition engines of heading 84.07, cleaned and minimally machined for risers only. No tooth profiling has been performed. This unfinished part is classified under this tariff item as a part of a spark-ignition engine.