Estimated class examples
Class 70–175
Based on the sample shipments below
Auto Parts LTL Shipping Guide
Freight Class for Auto Parts
Auto parts freight class commonly ranges from Class 70 to Class 175 in the examples below.
Dense boxed parts
Class 70
Mixed component pallet
Class 100
Body panels or bumpers
Class 175
These are density-based examples. Your final estimate depends on the finished packaged dimensions, total weight, stackability, fragility, value, and handling requirements.
Main class factor
Packaged density
Final dimensions and total weight
Assembly effect
Dense parts ship lower
Body panels, bumpers, and irregular parts occupy more space
Carrier review
Stackability and damage risk
Fluids, sharp edges, damage risk, and high-value components
Corrugated boxes density calculator
Calculate Your Auto Parts Freight Class
Example mixed auto-parts pallet loaded. Adjust the dimensions or weight to calculate your auto parts freight class.
Your result
Cubic feet
53.33
Density
10.03
lb/cu ft
Estimated freight class
100
Example density-based estimate. Update any field to calculate your shipment.
Auto Parts shipment comparison
Auto Parts Freight Class by Packaging Type
Auto parts freight class can vary substantially with part density, packaging efficiency, fluid residue, shape, fragility, securement, and stackability. Dense boxed components may produce lower density-based estimates, while body panels, bumpers, and irregular assemblies use more trailer space per pound.
| Auto-parts shipment | Typical packaging | Density tendency | Stackability | Planning note |
|---|---|---|---|---|
| Dense boxed components | Uniform cartons or small crates secured to a standard pallet | Higher | Usually stackable | Bearings, brake parts, fasteners, and metal components can ship efficiently when cartons are strong and evenly loaded. |
| Mixed automotive parts pallet | Mixed cartons, totes, and protected components stretch-wrapped to a pallet | Medium | Varies | Uneven shapes, weight distribution, and mixed packaging can reduce stability and stackability. |
| Body panels, bumpers, trim, and exhaust parts | Custom rack, crate, reinforced carton, or protected skid | Lower | Often limited | Large cubic volume, exposed finishes, and irregular geometry can increase handling and damage risk. |
| Engines, transmissions, axles, and heavy assemblies | Fluid-drained crate or heavy-duty skid with blocking and bracing | Higher | Usually limited | High point loads, residual fluids, and concentrated weight require strong securement and carrier review. |
Auto Parts shipping options
Choosing a Shipping Method for Auto Parts
The right service depends on part type, packaging, fluid status, dimensions, weight concentration, stackability, value, and whether the shipment needs special securement or handling.
| Auto-parts shipment | Common shipping option |
|---|---|
| Uniform boxed parts on standard pallets | Standard LTL |
| Mixed parts, accessories, and component pallets | LTL with securement and stackability review |
| Body panels, bumpers, glass, trim, or irregular parts | Specialized LTL, crated LTL, or partial truckload |
| Engines, transmissions, axles, or high-value assemblies | Heavy-duty crated LTL, partial truckload, or dedicated service |
Parts containing residual fluids, batteries, airbags, hazardous materials, sharp edges, or unusual weight concentration may require carrier approval and additional documentation.
Auto Parts shipment examples
Choosing a Shipping Method for Auto Parts
These examples use packaged outside dimensions and the site’s density-to-class chart. They are examples only, not fixed classes for every auto-parts shipment.
Dense boxed auto parts
Uniform cartons of metal components on a pallet
48 × 40 × 36 in
Packaged weight: 800 lb
- Cubic feet
- 40.00
- Density
- 20.00 lb/cu ft
Estimated class
Density-based
70
Mixed component pallet
Cartons and protected parts on a standard pallet
48 × 40 × 48 in
Packaged weight: 535 lb
- Cubic feet
- 53.33
- Density
- 10.03 lb/cu ft
Estimated class
Density-based
100
Body panels and bumpers
Bulky protected parts with lower packaged density
84 × 48 × 48 in
Packaged weight: 600 lb
- Cubic feet
- 112.00
- Density
- 5.36 lb/cu ft
Estimated class
Density-based
175
Auto Parts Packaging
- Use strong cartons, crates, skids, racks, and internal blocking sized for the part weight and shape.
- Immobilize heavy components and protect sharp edges, threaded surfaces, painted panels, glass, and trim.
- Drain or seal fluids as required and keep the finished load within the pallet or skid footprint.
Auto Parts Stackability
- Uniform boxed parts generally stack better than irregular assemblies, panels, bumpers, or exhaust components.
- Allow top loading only when cartons, crates, or racks can safely support freight above them.
- Treat exposed finishes, glass, unstable mixed pallets, and irregular overhanging parts as limited or non-stackable.
Damage, Security, and Liability
- Protect high-value electronics, catalytic converters, wheels, performance parts, and branded components from theft.
- Document fluid status, packaging condition, serial numbers, and visible damage before pickup.
- Confirm declared value and cargo coverage for rare, custom, high-value, or difficult-to-replace components.
Measure the Fully Packaged Auto Parts Shipment
- Measure after cartons, crates, skids, racks, blocking, wrap, and protective framing are complete.
- Include pallet or skid height, protruding brackets, exhaust sections, bumpers, and secured overhang.
- Measure to the longest, widest, and tallest packaged point, not just the bare part dimensions.
Before Requesting an Auto Parts Freight Quote
- Measure the finished pallet, skid, crate, rack, or carton.
- Record the total packaged weight and note concentrated point loads.
- State whether the shipment is stackable and whether top loading is permitted.
- Identify engines, transmissions, batteries, airbags, catalytic converters, glass, body panels, or other special parts.
- Confirm that required fluids are drained or sealed and disclose regulated or hazardous materials.
- Provide photos and confirm forklift, liftgate, loading-dock, appointment, or special handling needs.
Calculate your actual shipment
Calculate Auto Parts Freight Class
The calculator returns cubic feet, pounds per cubic foot, and a density-based freight class estimate for your auto-parts shipment.
Freight classes shown on this page are density-based estimates for shipment planning. Actual classification may also depend on value, handling requirements, liability, stowability, dimensions, and other commodity-specific factors. Confirm the final freight class with your carrier, broker, or official NMFC resources before shipping.
NMFC® is a registered trademark of the National Motor Freight Traffic Association, Inc. FreightClassCalculator.tools is an independent calculator and is not affiliated with, endorsed by, or licensed by NMFTA.