This CAT 3516B Marine Engine Assembly is a fully built V16 diesel power unit rated 1640 kW (2200 hp) at 1800 rpm, supplied as a complete CAT Marine Engine ready for installation. Each assembly is put together with matched internal components: two cylinder head groups fitted with a correctly pressed valve seat insert, piston and liner sets, bearings, camshaft, crankshaft and a complete gasket kit. Buyers who also maintain their own fleet can order the individual marine engine parts and diesel engine parts listed further down, which keeps long-term running costs predictable. From a single 3516B assembly to a mixed container of 3516B parts, every shipment leaves our workshop after compression, oil pressure, cooling and fuel delivery checks.

Product Highlights

• Complete 3516B Engine Assembly rated 1640 kW at 1800 rpm for marine propulsion, auxiliary generator sets and heavy excavator repower.
• Both cylinder head groups supplied with new valve seat insert, ground valves, lapped seats and valve lash set to CAT specification.
• Full marine engine parts scope: cylinder head group, valve seat insert, liner, piston and ring set, main bearing set, gasket kit, injector, turbocharger, water pump and oil pump.
• OEM-equivalent diesel engine parts cross-referenced against original CAT Marine Engine part numbers for fast and accurate procurement.
• Every 3516B assembly is run tested for compression, oil pressure, cooling circulation and fuel delivery before packing.
• Send us your engine arrangement number or CAT part number and our engineers confirm the correct 3516B component before you order.

Technical Specification

Valve Seat Insert and Valve Train Work

A 3516B works hard at continuous load, so the valve seat insert is the part that decides how well the engine holds compression after an overhaul. Our cylinder head groups are reconditioned with a new valve seat insert in every intake and exhaust position, cut to the correct face angle, pressed with the specified interference fit and then lapped to the valve. After assembly each head is vacuum leak tested, the valve lash is set to CAT specification and the injector bore is re-cut so the nozzle seals correctly.

Customers who run their own workshops can also take the valve seat insert, valve, valve guide and head gasket as separate marine engine parts. This allows a top-end refresh without replacing the complete cylinder head group, which is the most economical way to keep a 3516B in service. Send the engine arrangement number and we will confirm the matching valve seat insert set together with all related top-end parts in one quotation.

Reference CAT part numbers are shown in the two written forms found on original documentation, with and without the hyphen, so the engine assembly, valve seat insert and marine engine parts can be cross-checked quickly. Please confirm the exact number against your engine arrangement and serial number before ordering.

What Is Included in the 3516B Engine Assembly

• V16 cylinder block with crankshaft, camshaft and main bearing set installed and torque checked.
• Two cylinder head groups with valve seat insert, valves, springs, guides and rocker covers fitted.
• Piston, liner and ring set for all sixteen cylinders, matched by weight and clearance.
• Fuel system with injectors, injection pump and fuel transfer pump calibrated on the test bench.
• Turbochargers, aftercooler cores, water pump, oil pump, oil cooler and thermostat housings.
• Complete gasket and seal kit, front and rear crankshaft seals, flywheel housing and lifting eyes.

Application and Marine Engine Parts Range

The CAT 3516B marine engine assembly and the matching marine engine parts suit tugboats, offshore support vessels, fishing vessels, workboats, dredgers, barges, passenger ferries and marine generator sets where 1640 kW at 1800 rpm is the working rating. The same 3516B platform also powers large mining and construction equipment, so this assembly doubles as an excavator engine replacement for customers who already hold 3500 series parts stock. Whether you need the complete V16 power unit, a cylinder head group with a fresh valve seat insert, or a full overhaul kit with bearings and gaskets, we build the parts list around your engine arrangement number.

Global B2B Supply

Guangzhou Pinxin Engine Co., Ltd. supplies CAT Marine Engine assemblies and diesel engine parts to importers, distributors, repair workshops, shipyards and fleet operators worldwide. We regularly ship 3516B engine assembly units and 3516B marine engine parts to buyers in Australia, Canada, Chile, Zambia, Congo, Nigeria, Ghana, Tanzania, Indonesia, Thailand, Malaysia, Zimbabwe, Brazil, South Africa, Saudi Arabia, Mozambique, Peru, Argentina, Vietnam and Kenya. Mixed containers, consolidated parts orders and scheduled overhaul programmes are all supported, with export documentation prepared for each destination market.

Why Buy From Guangzhou Pinxin Engine Co., Ltd.

• One-stop sourcing for 3516B engine assembly, valve seat insert and every matching marine engine part.
• Technical team confirming fitment by CAT part number and engine serial number before shipment.
• Stable monthly capacity to support fleet overhaul programmes and distributor stock plans.
• Export-grade packing with anti-rust protection and reinforced cases for long distance transport.
• Fast quotation turnaround for B2B enquiries, including sample and mixed orders.