Automotive Belts
High-Performance Automotive Belts Trusted by OEMs
At MBL (USA) Corporation, we manufacture OEM-quality automotive belts designed for performance, durability, and precision. As part of the Mitsuboshi Belting family, a globally recognized leader in power transmission technology, we produce high-performance timing belts and serpentine belts for original equipment manufacturers (OEMs) and aftermarket applications across North America. Our belts are engineered to meet or exceed the strict quality standards of the automotive industry.
Precision-Engineered Belts for Today's Vehicles
Our automotive product line includes timing belts and serpentine belts designed to deliver quiet operation, precise power transmission, and extended service life. These belts are ideal for modern internal combustion engines as well as the unique demands of electric and hybrid vehicles, where low noise and high efficiency are critical. Whether you're supporting OEM production or the automotive aftermarket, MBL belts are built to perform with the reliability today’s evolving vehicle technologies require.

Applications for Automotive Belts
Camshaft Timing
Mitsuboshi timing belts provide precise synchronization of the crankshaft and camshaft, ensuring optimal valve timing and efficient engine performance. Built with high tensile strength and heat-resistant materials, they’re trusted by OEMs for durability and quiet operation—even under demanding conditions.
Accessory Drive Systems
Our V-ribbed belts power essential accessories like the alternator, A/C compressor, and power steering pump from a single engine pulley. Mitsuboshi’s precision-molded ribs deliver excellent flexibility, high load-carrying capacity, and reduced noise—perfect for modern combustion and hybrid vehicles.
Fan and Blower Drives
Mitsuboshi raw-edge V-belts offer high frictional grip and low slippage, making them ideal for fan drives, blower motors, and secondary cooling systems. Their durability under heat, load, and vibration ensures reliable performance in confined, high-demand environments.
Power Steering
Mitsuboshi V-ribbed and timing belts are engineered to drive hydraulic and electric-assist power steering systems in both traditional and electric vehicles. Their quiet operation, high load capacity, and exceptional wear resistance ensure smooth, responsive steering under all conditions.
Electric Parking Brake Actuators
Mitsuboshi timing belts are used inside electric parking brake actuators to drive internal gear mechanisms with precision. Their compact size, quiet operation, and durability ensure consistent, reliable brake engagement with minimal maintenance—ideal for modern EV and hybrid systems.
Power Sliding Mechanisms
Used in power sliding doors and liftgates, Mitsuboshi synchronous belts provide smooth, controlled motion with minimal noise. Their compact design and resistance to repeated flexing make them ideal for modern minivans, SUVs, and EVs where quiet, precise motion control is key.
Featured Products for Agricultural Applications
Our belts are manufactured under ISO/TS 16949-certified processes, guaranteeing consistency, precision, and reliability in every product.

Our overhead cam (OHC) Timing Belts are designed for synchronous power transmission, maintaining precise camshaft and crankshaft timing in internal combustion engines. These belts deliver dependable performance with minimal elongation, making them ideal for both high-speed and high-torque applications.

Flexible, fabric-free Raw-Edge V-belts are used in the engines of automobiles, trucks, buses, and construction machinery. Ideal in harsh load fluctuation and high-temperature environments, these belts have excellent heat resistance, abrasion resistance, and deformation resistance.

Mitsuboshi serpentine RIBSTAR™ and Star Fit® belts provide quiet, efficient performance for accessory drive systems in passenger and commercial vehicles. Their multi-ribbed construction offers superior flexibility and power transmission across multiple pulleys, enhancing belt-to-sheave contact and reducing slippage.

Electric Power Steering (EPS) uses an electric motor to assist the driver's steering, providing more precise control and improved fuel efficiency compared to hydraulic systems. In EPS, timing belts transfer power from the motor to the steering mechanism, ensuring smooth, quiet operation with minimal maintenance.

Electric brakes use an electric motor to control braking force, offering more precise and efficient braking compared to hydraulic systems. In electric brakes, timing belts transfer power from the motor to the brake components, ensuring accurate, reliable performance with reduced noise and wear.

Power sliding doors use an electric motor to automatically open and close vehicle doors, providing convenience and ease of access. In these systems, timing belts transfer power from the motor to the door mechanism, ensuring smooth, quiet, and reliable operation.
BACKED BY OEM INNOVATION
Built for the Aftermarket
Are Mitsuboshi belts OEM approved?
Yes. Mitsuboshi supplies belts directly to automotive OEMs and meets all OEM manufacturing standards.
What’s the difference between Mitsuboshi and generic aftermarket belts?
Mitsuboshi belts are manufactured with higher-grade materials and tighter tolerances, offering better performance and longevity.
Do MBL belts meet OEM specifications and testing standards?
Yes. All MBL automotive belts are manufactured to meet or exceed OEM specifications and undergo rigorous performance, durability, and environmental testing to ensure long-term reliability in real-world conditions.
How can I get a fitment guide or catalog?
Reach out to us via our Contact Page for technical resources, or visit our online catalog to cross-reference part numbers and find the right belt for your application.
Looking for a part?
Online Catalog
Utilize our online catalog to see which belt fits your application. Search by year, model, VIN Look Up, Part Number, and more. Take advantage of our cross reference capabilities.
Note: For general reference only. Check catalog for correct application. Any use of this interchange to determine applications is done at the installers risk.