SINOTRUK HOWO A1116-1009040 Oil Sump Weldment – Robust Engine Oil Reservoir

Oil Sump Weldment

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The A1116-1009040 oil sump is fabricated from deep‑drawing quality steel (DC04 grade) that offers excellent formability and strength. The stampings are produced on high‑tonnage presses to ensure precise, repeatable dimensions. All seams are welded using automated robotic welding systems, creating consistent, full‑penetration welds that eliminate leaks and withstand vibration fatigue. The sump includes strategically placed baffles and a windage tray that prevent oil slosh and aeration, ensuring continuous oil supply to the pump even during extreme vehicle maneuvers.

Each A1116-1009040 sump undergoes a 100% leak test under pressure to verify weld integrity. The flange surface is machined flat to ensure a perfect seal with the engine block when used with the specified gasket. A corrosion‑resistant coating is applied to both interior and exterior surfaces, protecting against rust from oil and external elements. This rigorous quality control guarantees that the sump will provide reliable oil containment for hundreds of thousands of kilometers.

The A1116-1009040 oil sump weldment is a direct OEM replacement for Howo engines, including the WD615, MC11, MC13, and D10 series. It bolts directly to the engine block, forming a sealed reservoir that holds the engine oil. The sump’s internal baffles are critical for maintaining oil pressure during high‑speed cornering, braking, and off‑road operation, where oil surge could otherwise cause the pickup to draw air, leading to bearing damage.

In chassis applications, the oil sump is exposed to road debris, salt, and vibration. A damaged or leaking sump can lead to oil loss, engine seizure, and costly downtime. The genuine A1116-1009040 sump provides the strength and corrosion resistance needed to survive harsh environments. It is also used in remanufactured engines and as a standard replacement part during major overhauls, ensuring the engine’s oil system performs as designed.

Application Note

When replacing the oil sump, always use a new gasket and apply the correct sealant at the critical points. Torque the bolts in the sequence specified in the service manual to prevent flange distortion.

1. Preparation

Drain the engine oil and remove the old sump. Clean the engine block mating surface thoroughly, removing all old gasket material. Inspect the block for cracks or damage.

2. Assembly

Place a new gasket on the sump flange. Apply a bead of RTV sealant at the corners and around bolt holes as specified. Position the sump and hand‑tighten the bolts. Torque in stages following the service manual sequence (typically 20‑25 Nm).

3. Final Checks

Refill with engine oil. Start the engine and check for leaks. Inspect the drain plug for tightness. After a short test drive, re‑check torque on the sump bolts.

Leak‑Free Design

Robotic welding and precision‑machined flange ensure a perfect seal, preventing oil loss and environmental contamination.

Enhanced Engine Protection

The integrated baffle system maintains oil pressure during aggressive driving, protecting bearings and extending engine life.

Long‑Term Durability

Corrosion‑resistant coating and robust steel construction withstand road salt, stone impacts, and vibration for years of service.

Aftermarket oil sumps are often made from thinner steel with poor weld quality, leading to leaks and structural failure. The genuine A1116-1009040 is manufactured to the exact specifications of the original equipment, using the same grade of steel and robotic welding processes. Each sump is leak‑tested and inspected for dimensional accuracy, guaranteeing that it will perform exactly as the original part.

By choosing authentic SINOTRUK HOWO parts, you protect your investment and ensure your truck maintains its reliability and resale value. The Sinotruk howo parts catalog includes a full range of engine and chassis components engineered for maximum durability. For fleet managers and owner‑operators who demand the best, the genuine A1116-1009040 is the only responsible choice.

Genuine Advantage

• 100% OEM specification
• Heavy‑gauge steel
• Robotic‑welded seams
• Factory leak‑tested
• Corrosion‑resistant coating

The A1116-1009040 oil sump is used across a wide range of Howo models: T7H, A7, and classic Howo‑7 series equipped with WD615, MC11, MC13, and D10 engines. Always verify the sump shape and bolt pattern with the service manual; some variants may have different capacities.

Each A1116-1009040 is individually packaged in a protective carton with foam supports to prevent damage during shipping. The package includes the sump only; the gasket and drain plug must be ordered separately if needed.