Air Brake Compressors for Cat Graders

Air Brake Compressors for Cat Graders parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	12G, 120G, 130G, 140G, 518, 528, 920, 930, 930R, 930T, 936, 950B	Air Brake Compressor		1W6473	$549.00	View Info

Air brake compressors for Caterpillar motor graders, supplying the compressed air that powers the grader air brake system across the G series machines. Replacement units are direct fits for worn or failing compressors that no longer build or hold air pressure.

Fits Models At A Glance

G Series Graders: 12G, 120G, 130G, 140G

Key Notes

Application: Builds and maintains air pressure for the grader air brake system.
Part Reference: Compressor referenced by number 1W6473.
Condition: New and used air brake compressors offered where available.
Symptoms: Slow air buildup, low pressure, or brakes that will not release point to a failing compressor.

Why Choose Broken Tractor

✅ Correct fitment matched to your grader model
✅ New and used options to fit any budget
✅ Fast shipping from our two locations

Frequently Asked Questions

Which Cat motor graders does this air brake compressor fit?

This air brake compressor fits Cat 12G, 120G, 130G, and 140G motor graders. Part number 1W6473 is the reference for the unit. If you are unsure whether it matches your machine, confirm the number against your existing compressor.

How do I know if my grader air brake compressor is failing?

Slow air pressure buildup, a system that will not reach operating pressure, or brakes that drag or fail to release are common signs of a worn compressor. If your grader is struggling to hold air, the compressor is a likely cause. Comparing your old unit to part 1W6473 helps confirm the right replacement.

Do you offer new and used air brake compressors for Cat graders?

We carry both new and used air brake compressors when available. Used units are a lower cost option, while new compressors offer full service life. Reach the parts team at (800) 909-7060 to check current condition options.