Interior Equipment, Sound Controlling & Insulation Products

Our interior equipment, sound control, and insulation products are manufactured at SumiRiko Tennessee and S-Riko Automotive Hose de Chihuahua. There are many sources of noise in an automobile, including the engine. Our sound controlling and insulation products shut out these noises and keep the inside of the cabin quiet.

Our original urethane is used for the engine cover due to its heat resistance and sound absorption and insulating properties, realizing a high degree of noise reduction even on engine parts with high temperatures.

Engine Covers

Installing a cover over the top of the engine reduces engine noise. We use materials with excellent heat-resistant and fireproofing properties to enable applications at extremely high temperatures. Optimized cover design also contributes to an improved engine compartment appearance.

Standing Wave Spacers

These products fill airspace to reduce noise generated in gaps between the engine body and its peripheral equipment. Our mold-casting technology enables fitting into spaces with complex shapes.



Our interior equipment contributes to comfort and safety in the car. Our unique urethane material and comprehensive production capabilities covering the entire manufacturing process from cutting, and sewing to integrated foaming result in products of consistently high quality.


Situated on the central parts of the doors on both sides, these provide comfort during the ride by proving a place to rest your arm. We adopt integrated molding techniques with outstanding design flexibility to provide products that provide comfort to drivers and passengers.

Water Hoses

These water line hoses include radiator and heater hoses. We use polymer materials technology to make them extremely heat resistant.

Oil Hoses

This product is expected to be highly heat-resistant due to the extreme heat in the environment it is used. It maximizes the performance of automatic transmission systems and contributes to the fuel efficiency of the vehicle. It is used in circuits that maintain transmission fluids at a constant temperature.

Air Conditioning Hoses

These hoses are used in refrigerant circulation systems for automobile air conditioning. Advanced technology is used to attach aluminum fittings to both ends of a flexible hose.

Hydrogen Hoses

Hydrogen hoses are used to transport hard to seal small gaseous matter at high pressure. Installed in fuel cell vehicles (FCEV), these hoses require a high level of reliability and durability to ensure that hydrogen is not leaked outside the vehicle under any circumstances.