# NMFC Code for Auto Parts: Freight Class & Lookup Source: https://freightapis.dev/learn/nmfc-code-for-auto-parts · Updated: 2026-10-09 · Publisher: FreightAPIs Shippers often ask for "the NMFC code for auto parts" — but there isn't just one. Auto Parts ships across **freight classes 60 to 250** depending on type and density. This guide explains how auto parts is classified and how to find the exact NMFC item number for your shipment. ## What is the NMFC code for auto parts? There is no single NMFC code for auto parts — Automotive parts cover everything from dense cast-metal components to large light body panels, so class varies widely. Heavy machined or cast parts rate low; bulky sheet-metal panels and trim rate high. Density of the packaged unit is the main driver. In practice, auto parts ships across **freight classes 60 to 250**, with **class 85** being a common middle case. To get the exact NMFC item number and class for your shipment, look up auto parts in a licensed NMFC database or pull it programmatically with the NMFC API. Automotive parts span many NMFC item provisions that branch by part type and material. The class for a given shipment depends on the specific part and its packaged density. ## How auto parts is classified Like all LTL freight, auto parts is classified by the four NMFC transportation characteristics — density, stowability, handling, and liability — but density usually drives the class. Common auto parts sub-types and how they tend to rate: - Engines, transmissions, and cast-iron parts — dense, class 70–85 - Brake rotors, hardware, and small machined parts — dense, class 60–70 - Body panels, bumpers, and sheet-metal parts — bulky, class 150–250 - Boxed accessories and trim — moderate, class 85–125 Because the class can swing across this range, the safest approach is to calculate your shipment's actual density and confirm the provision rather than assuming a class. The [Freight Class Calculator](https://freightapis.dev/freight-class-calculator) returns a density-based estimate; [Freight Class Explained](https://freightapis.dev/learn/freight-class-explained) maps each density band to its class. ## Why the right auto parts class matters Using the correct class for auto parts directly affects your freight bill and your risk of a reclassification charge: - **Pricing.** The class is the single biggest driver of the LTL rate. Guessing low means an underbilled shipment that the carrier later corrects. - **Reclassification fees.** If a carrier inspects your auto parts and finds the class understated, they reclassify it and rebill the difference, often with a fee. - **Documentation.** A correct NMFC item number on the bill of lading is your defense in a billing dispute. See [How to Determine Freight Class](https://freightapis.dev/learn/how-to-determine-freight-class) for the full measure → calculate → confirm workflow. ## Common mistakes when classifying auto parts Because auto parts spans classes 60–250, it is one of the more frequently reclassified commodities. The errors that cause most auto parts billing adjustments: - **Defaulting to one class for an entire catalog.** The same auto parts product line can carry several classes depending on size, material, and how it is packaged. A single "house" class applied to everything guarantees some shipments are wrong. - **Measuring the product, not the packaged unit.** Class is based on the shipment as tendered — pallet, crating, and overhang included. Measuring only the item understates volume and overstates density. - **Ignoring stowability, handling, and liability.** Density is the main driver, but auto parts can carry a class above its density alone when the provision accounts for these factors. Run the numbers with the [Freight Class Calculator](https://freightapis.dev/freight-class-calculator), then confirm against the actual provision — the steps in [How to Determine Freight Class](https://freightapis.dev/learn/how-to-determine-freight-class) catch all three mistakes. ## Tips to ship auto parts at a lower class Since density usually drives the class, denser packaging can move auto parts into a cheaper class and lower the bill: - **Eliminate wasted space.** Right-size cartons and remove excess void fill so the packaged unit is as dense as is safe. - **Palletize tightly.** A compact, stable pallet configuration with no overhang reduces the cubic footprint that drives the density calculation. - **Ship knocked-down where possible.** Flat-packed auto parts is far denser than assembled, which can mean a materially lower class. Verify the resulting class before quoting — gains only count if the carrier agrees on inspection. [Freight Class Explained](https://freightapis.dev/learn/freight-class-explained) shows exactly which density band maps to each class. ## Find the exact NMFC code for your auto parts Density estimates get you close, but the binding answer is the commodity's actual NMFC provision. Two ways to get it: - **Licensed NMFC database:** look up auto parts in a licensed NMFC database by description to see the matching NMFC item and class. - **API:** integrate the NMFC API so your TMS or quoting tool resolves the class automatically on every auto parts shipment. You can also browse related guidance in our [freight classification knowledge base](https://freightapis.dev/learn). ## FAQ ### Is there one NMFC code for auto parts? No. Auto Parts classifies across freight classes 60–250 depending on sub-type, density, and how it is packaged. Look up your specific item to get the exact NMFC number and class. ### What freight class is auto parts? Most auto parts ships between class 60 and 250, with class 85 being a common case. The exact class depends on the packaged density of your shipment. ### How do I find the NMFC code for my auto parts? Search the commodity in a licensed NMFC database, or use an NMFC API to resolve the item number and class automatically. ## Related guides - [The Complete Guide to LTL Freight Classification](https://freightapis.dev/learn/complete-guide-to-ltl-freight-classification) - [What is NMFC? A Complete Guide to Freight Classification](https://freightapis.dev/learn/what-is-nmfc) - [How to Determine Freight Class: A Step-by-Step Guide](https://freightapis.dev/learn/how-to-determine-freight-class) - [What is Freight Class 85? Density, Examples & Cost](https://freightapis.dev/learn/freight-class-85)