CATERPILLAR MT635B TRACTOR

Tier 2 with Serial Number P130069 and Above, Tier 3

Steel Line

Tier 3 Serial Number T079034 and Above

Tier 3, Serial Number U236047 and Above

Serial Number U236046 and Below

4 Groove
Fits Aftermarket Compressor 509-6393

4 Groove
Fits Original Sanden 509-6392

Includes 509-639 - 4 Groove Clutch
Kit Includes Compressor, Receiver Drier, Expansion Valve, and O-Rings

Can Use Aftermarket Kit 890-63913

4 Groove
Can Use Aftermarket Compressor 509-6393

Non-Serviceable Serpentine Design
Must Use Original Brackets

OE Serpentine, Non-Serviceable Design

Tier 3

Can use Standard Duty Drier - 803-3271

Can use HD Dry-Tech Drier - 803-327