490B-07100 Engine Oil Pan for 490/495/498/4D27/4D30 Forklift Diesel Engines

The 490B-07100 is a heavy-duty stamped steel engine oil pan designed as an OEM-spec replacement for a broad family of 4-cylinder forklift diesel engines, including the XinChai 490BPG, 495, 498, and the Isuzu-derived 4D27G31 and 4D30G31 engine platforms. The oil pan serves as the engine’s oil reservoir, typically holding 8-12 liters of 15W-40 diesel engine oil depending on the specific engine variant and sump configuration. It provides a sealed, leak-free environment for oil storage while incorporating internal baffling to prevent oil starvation during forklift operation on ramps, uneven surfaces, and during acceleration or braking where oil surge away from the pickup screen can momentarily interrupt oil supply to the pump. This pan fits HELI CPCD20-CPCD50, Hangcha CPCD20-CPCD50, Lonking LG20DT-LG50DT, and equivalent 2-5 ton forklifts using the 490/495/498 or 4D27/4D30 engine families.

The oil pan is manufactured from heavy-gauge deep-drawn steel sheet (typically 1.5-2.0mm thickness) with a stamped stiffening rib pattern that increases structural rigidity and reduces noise, vibration, and harshness (NVH) transmitted through the engine’s bottom end. Internal baffle plates are spot-welded at strategic positions around the oil pickup to create a calm oil zone that prevents the pickup screen from drawing air during forklift operation on grades up to 10-15 degrees. The pan flange is precisely stamped flat and incorporates a gasket groove or sealing surface designed for use with either a cork/rubber composition gasket or RTV silicone liquid gasket. A threaded magnetic drain plug is installed at the lowest point of the pan to capture ferrous wear particles and allow complete oil drainage during service intervals. The exterior finish is typically a black electrophoretic coating (e-coat) or powder coat that resists corrosion from road salt, moisture, and chemical exposure in outdoor and cold storage forklift applications.

Direct replacement for XinChai 490BPG, 490B, 495, 495B, 498, and Isuzu-sourced 4D27G31, 4D30G31 4-cylinder diesel engines. Fits HELI CPCD20-CPCD50, Hangcha CPCD20-CPCD50, Lonking LG20DT-LG50DT, and equivalent 2-5 ton forklifts. During installation, thoroughly clean the cylinder block oil pan mounting surface to remove all traces of the old gasket material and oil residue. Apply a continuous 3-4mm bead of RTV silicone gasket sealant to the pan flange, circling each bolt hole, or use a new composition gasket. Tighten the oil pan bolts in a cross-pattern sequence to the manufacturer-specified torque — typically 10-15 Nm for M6 bolts — to ensure even gasket compression and prevent leaks. Allow RTV to cure for the manufacturer-specified time before adding oil. Always replace the copper crush washer on the drain plug during an oil change. For compatible oil filters, engine oil, oil pump, pickup screens, and complete engine gasket sets, visit our Forklift Engine Parts section. For engine assembly specifications, refer to XinChai Power technical documentation.

Technical Specifications

• PN: 490B-07100
• Engine Compatibility: 490BPG / 490B / 495 / 495B / 498 / 4D27G31 / 4D30G31
• Material: Heavy-Gauge Deep-Drawn Steel, 1.5-2.0mm
• Finish: Black E-Coat / Powder Coat Anti-Corrosion
• Internal Baffling: Spot-Welded Anti-Surge Baffle Plates
• Drain Plug: Threaded Magnetic Drain Plug with Copper Washer
• Capacity: 8-12 Liters (Engine Variant Dependent)
• Gasket Type: Composition Gasket or RTV Silicone Compatible

Compatible Forklift Models

Each 490B-07100 oil pan is inspected for flange flatness, weld integrity on internal baffles, drain plug thread condition, and coating coverage. The pan ships in a foam-lined reinforced carton with the drain plug installed and the gasket flange protected. 12-month warranty against manufacturing defects. Installation tip: before final torque, loosely install all oil pan bolts finger-tight and visually verify the gasket (if using a composition type) is evenly seated all around the perimeter with no pinching or displacement. For engine oil pan leak diagnostics, gasket selection assistance, or fleet engine maintenance programs, contact our technical team.