The valve seats are nothing more than rings on the cylinder head that serve as a “bed” for the base of the valves (exhaust or intake), sealing the compression or explosion inside the combustion chamber.

Benefits of RIO valve seats:

• Largest portfolio in the market
• Oversizes up to 2 millimeters: greater use of the life span of cylinder heads
• Four types of materials for applications according to the engine requirement: cast iron, tempered cast iron, tempered steel and super alloyed steel.
• As these products are subjected to high temperature wear stresses, high chromium and nickel steels, cast irons alloyed with molybdenum and chromium or nickel and cobalt based alloys are applied according to the engine’s requirements.
• Special parts both in material and dimension.
• Mix of products distributed to the engines of the biggest automakers in the world.

The main function of the cylinder liners is to seal the combustion chamber, allowing the thermal exchange of heat throughout the block. Its use allows the reuse of the block, maintaining its useful life.

Benefits of RIO cylinder liners

• Internal finishing of the wet liners according to manufacturer’s standards (pre-softening).
• Over metal of dry liners in 0.80 mm in the internal diameter.
• Dimensional standardization of the parts that make up the package: guarantee of reduced rework.
• Rough Bushings for adaptation/ recovery of liners in blocks.
• Oversize up to 4mm.
• Standard hardness.
• Alternatives for high performance engines.
• One of the largest mixes of the market
• Special alloys with resistance to wear and corrosion.
• Innovative packaging for the wet liners: guarantee of integrity until delivery to the final customer.