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Robust oil containment for heavy-duty diesel engines – The OEM D3617-1009040 Oil Pan Assembly is engineered to provide a large oil reservoir, efficient heat dissipation, and structural rigidity for the engine block. Designed for SINOTRUK Homan trucks, this stamped steel oil pan resists corrosion and impact damage. For guaranteed compatibility and performance, always choose genuine Sinotruk Homan parts.
The D3617-1009040 oil pan assembly features a heavy-gauge stamped steel construction with integrated oil baffles, a drain plug with magnetic tip, and a precisely machined mounting flange for a leak‑free seal.
The D3617-1009040 oil pan assembly is manufactured from high-strength stamped steel with a thickness of 2.5 mm, providing excellent resistance to cracking from road debris and vibration. The pan features a deep sump design with a total oil capacity of 22 liters (with filter), ensuring adequate oil supply even during extended grades or high lateral acceleration.
Unlike aftermarket pans that often use thinner material or lack internal baffling, this genuine SINOTRUK Homan part incorporates three integrated baffles that prevent oil starvation during cornering and braking. The oil pickup tube location is optimized for the deep sump, maintaining oil pressure down to 3 liters remaining.
The mounting flange is precisely machined flat (within 0.2 mm) and includes 22 tapped holes (M8 x 1.25) for the gasket and bolts. A magnetic drain plug is included, capturing ferrous wear debris for easy removal during oil changes.
22 liter total capacity (with filter) ensures stable oil temperature and extended drain intervals. Sufficient reserve for steep climbs.
2.5 mm stamped steel construction with full corrosion protection. Withstands impacts from rocks and debris.
Three internal baffles prevent oil slosh and maintain pickup coverage under dynamic driving conditions, reducing engine wear.
| OEM Number | D3617-1009040 |
| Product Name | Oil Pan Assembly (Stamped Steel, Deep Sump) |
| Brand | SINOTRUK Homan |
| Material | Stamped steel (2.5 mm thick) with e-coat plus powder topcoat |
| Oil Capacity (total) | 22 liters (including oil filter) |
| Sump Type | Deep sump, rear sump design |
| Number of Baffles | 3 (integral stamped steel) |
| Flange Bolt Pattern | 22 x M8 x 1.25, 45 Nm torque |
| Flange Flatness | ≤ 0.2 mm over entire length (machined) |
| Drain Plug Type | M22 x 1.5 with neodymium magnetic tip (included) |
| Drain Plug Location | Rear, lowest point of sump |
| Pickup Tube Clearance | 8-10 mm from pan floor (optimized) |
| Corrosion Protection | E-coat (cathodic epoxy) + black powder coat, 500h salt spray |
| Gasket Included | No (sold separately, use D7505-1009001B) |
| Weight (empty) | 8.6 kg |
| Compatible Engines | SINOTRUK WD615, WD618, MC11, MC13 (Euro II – Euro V) |
The D3617-1009040 oil pan is designed using finite element analysis (FEA) to optimize stiffness-to-weight ratio. The deep sump section is reinforced with pressed ribs that also act as oil guides, directing flow toward the pickup. The baffles are formed directly from the pan stamping, not welded, eliminating potential leak paths.
The oil pan features an integrated windage tray (optional on some variants – standard on this model) that separates the oil sump from the crankshaft to reduce aeration and parasitic drag. This tray is bolted to the main bearing caps and is also available as a separate component.
A recessed area around the drain plug protects it from impact, while a magnetic tip collects ferrous particles that can be inspected at each oil change. The plug uses a captive copper washer that cannot fall off, ensuring a leak‑free seal.
The steel pan is first cleaned in a multi-stage phosphate bath, then e-coated with a cathodic epoxy that reaches every internal cavity. A durable black powder topcoat adds UV resistance and stone-chip protection. This finish withstands 500 hours of salt spray without rust, per ASTM B117.
The pan is tested to withstand a 10 N·m impact from a 5 kg object (simulating a rock strike) without cracking or deforming. This is critical for off‑highway applications.
The D3617-1009040 is a direct bolt-on replacement for the original pan. Before installation, ensure the block sealing surface is clean and flat. Use a new OEM gasket (D7505-1009001B) and new oil pan bolts. Torque evenly in a crisscross pattern to 45 Nm.
Always transfer the oil pickup tube from the old pan or use a new one (sold separately). Apply thread sealant to the pickup tube bolts. The pan includes pre-installed studs for the windage tray on some variants – check compatibility.
1) Drain engine oil and remove the old oil pan. 2) Clean the engine block flange with a scraper and brake cleaner, ensuring no old gasket remains. 3) Check the oil pickup tube for cracks or loose bolts; replace if necessary.
4) Apply a thin film of engine oil to the new gasket (D7505-1009001B) and position it on the new pan using the locating tabs. 5) Lift the pan into place, start all bolts finger-tight. 6) Torque bolts in three stages: 10 Nm, then 25 Nm, finally 45 Nm in a crisscross pattern from the center outward.
7) Install a new oil filter, add 22 liters of recommended oil (15W-40, API CK-4), and start the engine. 8) Check for leaks and verify oil pressure. 9) After the engine reaches operating temperature, re-check the oil level and top up as needed.
Inspect the oil pan for dents or cracks during every oil change. A dented pan can reduce oil capacity and cause the pickup tube to contact the pan floor, restricting flow. If the pan is dented, replace it – do not try to hammer it out, as this may crack the metal.
Check the drain plug magnetic tip for metal particles; excessive shavings indicate internal engine wear. The drain plug washer should be replaced every 3 oil changes. If the pan leaks after installation, re-torque the bolts (45 Nm) – do not exceed.
If the pan is damaged by impact, replace it immediately. A cracked pan can lead to sudden oil loss and catastrophic engine failure. Keep a spare pan in stock for mining and construction fleets.
The D3617-1009040 oil pan assembly is manufactured under IATF 16949 and ISO 9001:2015 quality systems. Each pan is 100% tested for dimensional accuracy (CMM inspection), leak-tested at 0.5 bar air pressure, and checked for coating thickness and adhesion. Random samples are subjected to a vibration test (20g, 10-2000 Hz for 100 hours), a corrosion test (500h salt spray), and an impact test (5 kg drop from 500 mm).
The pan also passes a 200,000‑mile simulated life test on an engine dynamometer, including thermal cycling from -40°C to +120°C. All materials are RoHS compliant. An engraved batch number on the flange provides traceability. Counterfeit pans often use thinner steel (1.5 mm vs. 2.5 mm), have poorly formed baffles, or lack the e‑coat inside.
A fleet of 400 SINOTRUK T7H trucks operating in the Australian outback (corrugated roads, high dust) experienced 6 cracked aftermarket oil pans per year. After switching to the D3617-1009040 genuine pan, zero cracks were reported over 24 months. The thicker steel and robust baffling also reduced oil aeration, extending turbocharger life by 20%.
Another user – a mining contractor in Chile with HOWO dump trucks – reported that the integrated magnetic drain plug captured enough debris to detect a failing bearing early, avoiding a major engine rebuild. The pan’s corrosion protection eliminated rust issues that had plagued cheaper pans.
Each genuine D3617-1009040 oil pan assembly is packed in a reinforced corrugated box with foam supports to prevent damage. The pan is wrapped in a VCI bag to prevent corrosion during storage. The box includes a QR-coded authenticity card and a drain plug washer.
The pan has a holographic label and a laser-etched OEM number on the flange. Counterfeit pans often have rough edges, missing baffles, or a dull finish. Always scan the QR code to verify with SINOTRUK Homan. Using a non‑genuine pan risks engine oil starvation and voided warranty.
Summary: The SINOTRUK Homan Oil Pan Assembly (OEM D3617-1009040) delivers exceptional strength, large oil capacity, and reliable sealing for heavy-duty diesel engines. Protect your engine from oil starvation and leaks – choose this genuine OEM component trusted by fleets worldwide.
If you have any questions about our products, services, or anything related to what we offer, please don’t hesitate to leave us a message—our dedicated team is always ready to provide prompt and helpful responses to address your concerns. What’s more, when you become our valued customer, we’re delighted to offer you complimentary catalog services, giving you access to detailed, up-to-date information on our full range of products, specifications, and offerings to help you make informed decisions.
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