Excavator Parts Supplier for Hydraulic, Diesel Engine and Undercarriage Spare Parts GUANGZHOU OTTO EXCAVATOR PARTS CO., LIMITED has been a supplier of excavator spare parts since 2003. From Guangzhou, China, we manufacture, rebuild and distribute excavator hydraulic parts, diesel engine parts and undercarriage components, supported by a facility of more than 30,000 square meters and a team of 21-60 people, including senior hydraulic and engine technicians and export sales staff. Our range covers genuine and high-precision aftermarket components for Hitachi, Isuzu, Caterpillar, Komatsu, Volvo, SANY, Kobelco, Cummins and Mitsubishi machines. OTTO is a member of the Guangzhou Construction Machinery Industry Association, and our global distribution supplies parts wholesalers, repair workshops, rental fleets, mining contractors and regional agents in more than 120 countries and regions. OTTO at a Glance 2003 Year Established More than 20 years in excavator parts 30,000 m² Facility Area Workshop and central warehouse 21-60 Team Size Engineers, technicians and export staff 50,000+ Catalogue References Stocked and made-to-order part numbers 120+ Export Markets Buyers served across countries and regions Figures above are OTTO's own operational data, updated internally. They are not third-party audited, except where a certificate is linked on this page. What We Supply Our excavator parts range is organised by system, so buyers can go straight to the category they need. Hydraulic Parts Main pumps, travel motors, swing devices and repair kits for Hitachi, CAT, Komatsu, Kobelco and Volvo excavators. Browse excavator hydraulic parts Final Drive and Swing Motor Complete final drive assemblies and swing motors, plus internal parts such as gears, bearings and hydraulic motors. See final drive assemblies  |  See swing motors Control Valves and Hydraulic Pumps Main control valves, distributor valves and hydraulic pumps tested before dispatch, with part-number matching against your machine serial. Browse control valves  |  Browse hydraulic pumps Diesel Engine Parts Cylinder blocks, cylinder heads, crankshafts, pistons, fuel injectors and overhaul kits for Isuzu, Cummins, CAT and Mitsubishi engines. Browse diesel engine parts  |  See diesel engine assemblies Undercarriage Parts Track rollers, idlers, sprockets, track chains and track shoes for excavators working in quarry and construction conditions. Browse undercarriage parts Isuzu and Electric Parts Isuzu engine parts for 4HK1, 6HK1, 6WG1 and 4JJ1 series, plus sensors, wiring harnesses and throttle motors. See Isuzu excavator parts  |  See electric parts OUR CREDENTIALS AND CAPABILITIES Authorizations, Proprietary Brands and Certificates Authorizations, brand ownership and test certificates are listed separately below, with the document reference for each item. Full copies are published on our certificate and honor page. 1. Manufacturer Partnerships and Authorizations Direct supply channels for engine and hydraulic components, with the authorization we hold named for each partner. Isuzu Diesel Engine Parts Supply We supply genuine and OEM-quality Isuzu engine parts — cylinder blocks, cylinder heads, crankshafts and overhaul kits for the 4HK1, 6HK1, 6WG1 and 4JJ1 series — matched by original part number and checked dimensionally before dispatch. Please confirm whether you need the genuine or the aftermarket option; warranty terms follow the product category and order terms. Cummins Engine Parts Supply Supply of Cummins engine assemblies and components, including common rail fuel injection pumps, turbochargers and heavy-duty aftermarket parts for excavators, wheel loaders and mining equipment. Availability and lead time are confirmed per part number and per order. Tong Myung Hydraulic Distributor (Korea) OTTO holds an authorization certificate as sole agent for Tong Myung Heavy Industries (Korea). The range covers main hydraulic pumps, swing motors, travel devices and OEM-spec internal parts. The authorization document is published on our certificate and honor page. 2. Our Proprietary Brands Brands we own and manufacture, produced to the tolerances specified for each application. OTTO Excavator Parts Our own brand of excavator components, from electrical sensors, wiring harnesses and throttle motors to hydraulic control valves and undercarriage parts. Products are dimensionally inspected with CMM equipment and pressure tested where the component allows, to verify fitment before dispatch. TOYO Hydraulic Seal Kits TOYO is our hydraulic sealing brand, using polyurethane (PU), hydrogenated NBR and PTFE wear rings. The kits are specified for excavator boom, arm, bucket and breaker cylinders, and are selected against the operating pressure and temperature of each application. 3. Certificates and Product Compliance Each certificate below applies only to the products named on it, not to our full catalogue. CE — OTTO CAT Fuel Injectors CE certific...