• Airflow Research (AFR) - Manufacturer and designer of cylinder heads, with flow dynamics simulation capability. Includes company profile and product overview.
• Ameera Exports - Manufacturer of valves, rockers and related equipment. Includes company profile, product and application overview.
• American Custom Cam - Manufacturer of custom camshaft grinding for all types of applications. Includes company profile and capabilities.
• Cal Valves - Remanufacturer of engine valves for diesel, industrial and automotive engines. Includes product overview, catalogue and company profile.
• Crane Cams - Manufacturer of camshafts and valvetrain components. Includes product overview, company profile and list of retailers.
• Durovalves - Manufacturer of valves, pins and related equipment as per requirement. Includes company profile and product overview. [India]
• G&S Valves Ltd. - Manufacturer of valves for engine development, up to ongoing scheduled contracts for larger companies.
• Headway Performance - Remanufacturing of cylinder heads. Includes company profile and capability overview.
• Hoga Industry - Production and sale of valves, guides and seats. Includes company profile and product overview.
• Jinninge Enterprise Co., Ltd. - Manufacturer of motorbike cam shafts, automobile camshafts, shift fork, gasoline and diesel engine parts, shift gear drums and rocker arms. From Taiwan.
• L.E. Jones Company - Manufacturer of valve seat inserts for the diesel and automotive industry. Includes technical information and company profile.
• Louthan Competition - Rebuilds engine cylinder heads for stock or racing vehicles. Includes pricing schedules, technical information and photo gallery.
• Märkisches Werk Halver - Manufacturer of cylinder head components for two stroke and four stroke engines. Includes product overview and company profile.
• Mechadyne International - Developer of valvetrain systems for internal combustion engines. Includes product overview and company profile.
• Moonrise Industries - Manufacturer of cylinder heads for European truck and diesel engines. Includes product overview and company profile. [English, French, German]
• National Cylinder Head Exchange - Remanufacturer of cylinder heads for all vehicles and marine applications.
• Newman Cams - Manufacturer of automotive camshaft systems for motorcycles, automotive and industrial engines. Includes product catalogue and company information.
• Nextech Engineering - Manufacturer and exporter of intake and exhaust valves. Include product overview, capabilities and company profile.
• Oygarsan Tappet Ltd. - Manufactures valve tappets for oem. From Turkey.
• Performance Springs Pty Ltd - Manufacturer of engine valve springs and retainers. From Australia.
• Piper Cams - Manufactures performance camshaft and exhaust manufacturer.
• Precision Engine Parts - Manufacturer of bronze valve guides and valve train components. Includes company profile.
• Sanmati Exports - Manufacturer and exporter of valves, guides, tappet and valve seats. Includes company profile and product overview.
• Sino Spark Plugs - Manufacturer of spark plugs. Includes company profile and product overview.
• Spesso - Manufacturer of flat gaskets and joints for OEM and aftermarket applications. Includes product overview and catalogue.[English, French, Italian, Spanish, German]
• Tetik - Manufacturer of valves, guides and seat inserts for internal combustion engines. Includes company profile and product overview.
• VEGE - Remanufacturer of cylinder heads. Includes company profile with international sale offices and facilities.
• Vespark Industrial Co., Ltd. - Manufactures glow plugs for diesel engines.

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