What freight class are transmissions?

Palletized transmissions typically rate class 70 - 85 (12 - 22.5 pcf) depending on crating. The exact class depends on the measured density of your packaged shipment.

How do I find the exact class for my transmissions shipment?

Measure the packaged dimensions and weight, compute pounds per cubic foot, and read the current 13-band NMFC density scale - or use the free calculator on this site. Confirm the NMFC item number with your carrier for the BOL.

Did the 2025 NMFC changes affect transmissions?

Docket 2025-1 (July 2025) moved roughly 2,000 commodity listings to density-based classification and rebuilt the density scale to 13 bands, so most freight - including this category - now classes primarily by measured density.

Freight Class for Transmissions: Typical Classes & How to Verify

Why transmissions rate where they do

Like engines, transmissions are dense metal assemblies. Strapped to a tight skid they commonly run 15 - 20 pcf and rate class 70. In a full crate with clearance, density drops toward 12 pcf and class 85.

Worked example. A transmission strapped to a skid: 40 × 36 × 30 in, 380 lb. That is 25.0 cu ft and 380 lb → 15.20 pcf → class 70. Run your own numbers →

Relevant class pages: class 70 · class 85.

What moves the number

Drain fluid, cap the lines, and bolt or band the case to the pallet - transmissions are top-heavy and a tipped unit is a claim. Core returns ship the same way in reverse; the class logic is identical.

Measure, don't assume. Since NMFC Docket 2025-1 (July 2025) most commodities class by measured density on a 13-band scale. The ranges above are typical, not guaranteed — your packaging decides your density. Calculate your actual class →

Freight class for transmissions

Why transmissions rate where they do

What moves the number