New engine design is putting an increasing emphasis on space saving. Small pulley diameters necessitating thin, flexible belts are often the result. Being extremely elastic and dimensionally stable, optibelt RBK ribbed belts can adapt to the respective drive geometry.

optibelt RBK ribbed belts drive the ancillary components in cars. They reduce vibration and give the generator, air-conditioning compressor and the power steering pump the right spin.

optibelt RBK ribbed belts are available as double sided belts or elastic belts. Important: Elastic ribbed belts must never be used as a replacement for normal ribbed belts. At Optibelt you can recognise the elastic ribbed belts by the additional "E" in the item number, e.g. 6 EPK 842. Double sided ribbed belts have the item number suffix “DPK”.

Mild hybrid concepts were developed as a bridging technology to reduce CO2 emissions from new vehicles. The power of the combustion engine is supplemented by that of a belt-driven starter generator.

Mild hybrid systems require an extremely high-performance drive belt, since the power transmission frequently switches between the starter generator and the crankshaft pulley.

To withstand these enormous loads, optibelt OLYMPIA Mild Hybrid Ribbed Belts are made with high performance aramid cords and EPDM mixtures reinforced with aramid fibres.

Optimum power transmission even after thousands of operating hours and with extreme loads – for these high requirements, Optibelt developed the ZRK timing belt.

The sections and belt constructions of this high capacity belt have been perfectly designed – down to the smallest detail.

The materials used are also perfect for the job: wear-resistant polyamide, zero stretch glass fibre cord and durable polychloroprene elastomer.

You can obtain optibelt ZRK as a single belt or as a repair kit with the matching tension and guide idler pulleys and/or water pump.

The optibelt MARATHON X was developed for driving ancillary components in the engines of cars and light commercial vehicles.

This raw edged V-belt with moulded cogs is distinguished by its high level of durability and its low-stretch tension behaviour.

Optibelt SUR tension and guide idler pulleys provide the necessary operational tension and guidance for timing belts and ribbed belts in car engines.

Due to increasingly high requirements where durability, running noise and safety are concerned, it is necessary to change all the components in a belt drive at the same time. Starting from fixed tension idler pulleys with eccentric to hydraulic or mechanical damping, the SUR product range includes all the necessary components.

High quality standards ensure that the recommended replacement intervals are reached and prevent problems with the sensitive motor control.

Our high quality tension and guide idler pulleys are available both individually as well as in the optibelt Repair Kit.

Driver safety should always be paramount. The wrong tension due to faulty tension idlers can cause timing belt damage and thereby result in belt failure. You should replace not only the drive belts , but also the tension and guide idler pulleys, as well as the water pump if required, in good time. In this way, you can avoid expensive engine damages.

All components of optibelt KITs are selected and assembled to the highest quality standards. An ‘I’ve been changed’ sticker allows the replaced components to be marked and also distinguishes between the belt, tension pulleys and idler pulleys.

Our optibelt repair kits are made of optimally matched components which should be changed in a single workstep to enhance safety and cost-effectiveness. optibelt ZRK KITs for this range can be obtained with the matching water pump in each case.

All components meet a very high, approved standard of quality. A change sticker allows you to tick off the components you have replaced and differentiates between belts, tension idlers and guide idler pulleys and water pumps.

Furthermore, the optibelt KIT repair sets save you from the need to carry out laborious ordering of individual parts. Optibelt is your point of contact in this case for all replaceable components.

Ribbed belt replaced - problem solved? Not always. Belts are not the only things affected by wear, other components are often affected too. The solution: the proven Optibelt repair kits.

These are also available as the optibelt REPAIR KIT RBK for ancillary units in cars and vans. optibelt KIT RBK includes all of the necessary precision-fit components, made to Optibelt's renowned OEM quality standard. In addition to the optibelt RBK ribbed belts, the set includes the associated tension and guide idler pulleys appropriate to the type of vehicle application.

A change sticker allows you to tick off the components you have replaced and differentiates between belts, tension idlers and guide idler pulleys.