Heading 8409

Parts suitable for use solely or principally with the engines of heading 8407 or 8408

22 declarable lines

Heading 8409 covers parts made only or mainly for the engines of heading 8407 (spark-ignition) or heading 8408 (diesel). It splits first by engine type: 8409.10 for aircraft engine parts, 8409.91 for spark-ignition engine parts, and 8409.99 for all other engine parts, mostly diesel. The lines below that depend on the end use (vehicles of headings 8701 to 8704, marine propulsion engines, or other) and on whether the part is a rough cast-iron casting or a finished part such as a connecting rod.

Products in this heading

Pistons, piston rings and piston pins for car and truck engines
Aluminum cylinder heads for spark-ignition vehicle engines
Connecting rods for gasoline or diesel engines
Engine valves, valve guides and valve seats
Carburetors and throttle body assemblies
Intake and exhaust manifolds
Rough cast-iron engine blocks and heads not advanced beyond cleaning
Parts for aircraft piston engines

How to choose the right subheading

Engine type the part serves: spark-ignition engines of heading 8407 go to 8409.91, other engines, mainly diesel, go to 8409.99
Whether the part is for an aircraft engine, which takes 8409.10
End use: parts to be installed in vehicles of headings 8701 to 8704, parts for marine propulsion engines, or other use
Material and finishing stage: rough cast-iron parts machined only for cleaning or locating are separately provided and duty free
Article identity: connecting rods have their own statistical lines within several subheadings

Often confused with

Oil and fuel filters for engines
Filtering machinery and apparatus for liquids or gases has its own heading, even when made for an engine.
Heading 8421
Spark plugs and ignition wiring
Electrical ignition and starting equipment is classified outside chapter 84.
Heading 8511
Crankshafts and camshafts
Transmission shafts, cams and cranks are named in heading 8483.
Heading 8483
Engine gaskets and seals
Gaskets and similar joints are provided for in heading 8484.
Heading 8484
Turbochargers and superchargers
Air or gas compressors and fans, and their parts, fall in heading 8414.
Heading 8414

Frequently asked questions

What is the HTS code for connecting rods for car engines?

Connecting rods for spark-ignition engines to be installed in vehicles of headings 8701 to 8704 are 8409.91.50.10, with a general (MFN) rate of 2.5%. For diesel engines in the same vehicles, use 8409.99.91.10, also 2.5%.

What is the duty on aluminum cylinder heads for vehicles?

Aluminum cylinder heads for spark-ignition engines installed in vehicles of headings 8701 to 8704 are classified in 8409.91.30.00 at a general (MFN) rate of 2.5%. The same part for other engines falls in 8409.99, where the rate depends on the end-use line.

How do I classify parts for aircraft engines?

Parts suitable for use solely or principally with aircraft engines of heading 8407 or 8408 go in 8409.10. Parts for use in civil aircraft are 8409.10.00.40 at a general (MFN) rate of Free, and other aircraft engine parts are 8409.10.00.80, also Free.

Guide written from the official schedule text. Rates quoted are general (MFN) rates; check the line page for trade agreement rates and the classification of your exact product.