Belt Tensioners & Idler Pulleys

SUMATE PRODUCT RANGE

Belt Tensioners & Idler Pulleys for Automotive Applications

SUMATE supplies belt tensioner assemblies, replacement tensioner pulleys, and idler pulleys for selected applications in passenger cars, commercial vehicles, trucks, buses, and heavy-duty equipment. Automatic belt tensioners maintain belt tension, while idler pulleys guide the belt along the specified routing path.

Browse by brand to find reference parts, then check the complete part number and application details. Similar-looking components can differ in mounting points, pulley diameter, width, offset, bearing arrangement, or tensioner operating range. Appearance alone does not establish compatibility.

Choose the Right Tensioner or Pulley

Belt Tensioner Assemblies

Complete automatic tensioner assemblies combine a tensioning mechanism with the pulley arrangement specified for the application. Check the reference number, mounting configuration, pulley position, and operating range when selecting a replacement.

Idler & Replacement Pulleys

Idler pulleys guide the belt, while replacement tensioner pulleys fit the corresponding tensioner assembly. Confirm the pulley diameter, width, surface profile, bearing dimensions, and mounting hardware. A pulley alone is not a complete tensioner assembly.

Part Matching

Use the OE or reference part number together with the vehicle model and engine code. Where a part has been revised or replaced by another reference, confirm the mounting and application details before ordering.

Send Us Your Tensioner or Pulley Requirements

Send the OE or reference part number, vehicle and engine details, and the quantity required for each item. Please specify whether you need a complete tensioner assembly, a replacement tensioner pulley, or an idler pulley.

If the reference number is unavailable, include clear photos of the front, rear, mounting points, and any markings, together with the available dimensions. Our team will review the information and confirm the proposed specification, availability, and order details in the quotation.

  • OE or reference part number
  • Vehicle model, year, and engine code
  • Part type, photos, and available dimensions
  • Quantity required for each item