Billet 4340 Chrome-Moly Connecting Rod for GM LS-Series
CNC-machined billet 4340 chrome-moly steel connecting rod set for GM LS1/LS3 V8 spark-ignition engines. Falls under HTS 8409.91.99.10 for its principal use in automotive spark-ignition piston engines, with rifle-drilled oiling passages.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If imported as hot-rolled alloy steel bars before machining
Raw 4340 steel bars classify under Chapter 72 iron/steel articles, not finished engine parts.
If specifically for aircraft engines
Aviation spark-ignition engine parts have dedicated statistical suffixes.
If supplied in vehicle suspension repair kits
When bundled with non-engine parts for vehicles, classifies as motor vehicle parts.
Not sure which classification is right?
Our AI classifier can analyze your specific product and recommend the correct HTS code with confidence.
Import Tips & Compliance
• Specify center-to-center length and big-end bore precisely in commercial invoice for verification
• For aftermarket parts, include dyno test data linking to specific engine models
• Avoid generic descriptions; detail heat treatment (e.g
• 35-38 Rockwell C) to prove quality
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