WESCO Auto Transmission Parts
  • OEM Quality Standards
  • Number One in Service
  • The Oldest and Largest
  • Industry Leader in R&D
Alto Products Corp. is the oldest and largest independently owned and operated clutch plate and automatic transmission parts manufacturer in the world. We manufacture the most complete line of friction and steel plates worldwide.
Our Product Line Interparts is an ISO-registered manufacturer of Constant Velocity (CV) driveline parts for passenger cars and light trucks.
Interparts also manufactures custom-molded rubber products and rubber bonded-to-metal products such as seals, grommets, bumpers, and suction cups in various elastomers.
WESCO Automatic Transmission Parts
N-24 Lomas Verdes Ave., Bayamón, Puerto Rico 00956
Phones: (787) 785-4329 - (787) 780-6643 - (787) 798-2270 Fax: (787) 785-7623