How to Size, Align, and Replace Your Air Compressor Pulley An air compressor pulley might look like a simple piece of metal, but it plays a critical role in yo … read more Jun 10, 2026 Craig Coffey, Owner, Master Tool Repair; Technical Reviewer: Eric Trotman, 20-Year Air Compressor Expert
Essential Air Compressor Gasket & O-Ring Kits: The Foundation of a Leak-Free System Air compressors are the workhorses of any shop, but their power depends entirely on the integrity of … read more Jun 3, 2026 Craig Coffey, Owner of Master Tool Repair; Reviewed by: Eric Trotman (20-Year Air Compressor Expert)
Description Specifications Fits Models 0 Reviews Description Rolair Motor Pulley Groove: Single-A Bore: 3/4" Outside Diameter: 4-5/16" View AllClose Specifications Model Number/ Cross Reference: 4090HK17, 6590HK18,5GR30HK17, RC4HK12 Groove: Single-A Bore: 3/4" Outside Diameter: 4-5/16" View AllClose Product Fitment View AllClose 0 Reviews View AllClose
