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Permanent oil leak prevention and perfect engine sealing – The OEM WG9761349013 Oil Pan Sealing Gasket is engineered to provide a reliable, reusable seal between the oil pan and engine block on heavy‑duty diesel engines. Made from a high‑performance rubber‑steel composite, it eliminates the need for messy liquid sealants.
This precision‑molded gasket resists oil degradation, high temperatures, and vibration, ensuring a clean engine undersurface and preventing oil loss. For guaranteed compatibility and leak‑free operation, always choose genuine Sinotruk Homan parts.
The WG9761349013 Oil Pan Sealing Gasket features a steel carrier with vulcanized ACM (polyacrylate) rubber beads that compress to form a tight seal. It fits SINOTRUK HOWO, SHACMAN, and Weichai engines, providing years of service without hardening or cracking.
The WG9761349013 Oil Pan Sealing Gasket replaces old‑style cork or paper gaskets that shrink, crack, and leak. Its molded rubber beads follow the exact contour of the oil pan rail, compensating for minor surface irregularities.
Unlike liquid sealants (RTV), this gasket requires no curing time and allows immediate oil fill and engine start. It is also reusable: if you remove the oil pan for inspection, the gasket can be reinstalled without replacing, provided it is not damaged.
Fleet data shows that using the WG9761349013 reduces oil consumption by preventing seepage, keeps engine bays clean, and lowers the risk of low‑oil‑level damage. The gasket withstands continuous oil temperatures up to 150°C and short‑term spikes to 180°C.
Compression‑limiting steel stops prevent over‑tightening, while rubber sealing ribs ensure a perfect seal even under vibration.
ACM rubber compound rated for continuous 150°C, short‑term 180°C. No hardening or cracking over time.
Steel‑reinforced construction allows the gasket to be removed and reinstalled multiple times without losing sealing performance.
| OEM Number | WG9761349013 |
| Product Name | Oil Pan Sealing Gasket (Rubber/Metal Composite) |
| Brand | SINOTRUK Homan |
| Material | Stamped steel carrier + vulcanized ACM (polyacrylate) rubber |
| Gasket Type | Profile‑molded with compression limiters |
| Compression Set Resistance | ≤ 15% (ASTM D395, 22h at 150°C) |
| Continuous Temperature Range | -40°C to +150°C |
| Peak Temperature Tolerance | 180°C (short term, 1 hour) |
| Oil Resistance | Excellent (mineral, semi‑synthetic, full synthetic oils) |
| Tensile Strength (steel carrier) | ≥ 300 MPa |
| Hardness (rubber) | 70 ±5 Shore A |
| Bolt Hole Pattern | Precision stamped, matches Weichai WP10/WP12, MAN D20/ D26 engines |
| Recommended Torque | 20 Nm + 90° (use torque‑angle method) |
| Standards Met | ISO 9001, IATF 16949, RoHS |
The WG9761349013 Oil Pan Sealing Gasket is manufactured using a transfer‑molding process where ACM rubber is directly vulcanized onto a precision‑stamped steel carrier. This creates an inseparable bond that withstands oil pressure and thermal cycling.
The steel carrier has integrated height limiters (small dimples) that prevent the rubber from being over‑compressed. Even if bolts are overtightened, the limiters bottom out, protecting the rubber from extrusion. This also ensures consistent clamp load across all bolts.
The sealing beads are shaped as two parallel ribs that contact the oil pan and block surfaces. When compressed, they create a micro‑maze that stops oil from migrating outward. The design is validated by finite element analysis (FEA) for sealing pressure distribution.
ACM (polyacrylate) rubber is chosen for its outstanding resistance to hot engine oils and oxidation. Unlike nitrile (NBR), ACM does not harden significantly at high temperatures and maintains its elasticity for the life of the engine.
The compound also includes anti‑ozonants and UV stabilizers, although the gasket is not exposed to sunlight, this ensures no degradation during warehouse storage. It is fully compatible with all common diesel engine oils (15W‑40, 10W‑30, 5W‑40) and synthetic blends.
Extensive engine dyno tests show zero leakage after 2,000 hours of run time, with oil temperatures cycling between 80°C and 140°C every 15 minutes.
The WG9761349013 is a direct replacement for original oil pan gaskets on SINOTRUK HOWO with Weichai WP10/WP12 engines, SHACMAN F3000, and many MAN‑derived power units. It also fits some Cummins and Deutz oil pans with the same bolt pattern.
Before installation, clean both mating surfaces thoroughly, removing all old gasket material and oil residue. Do not use additional sealant (RTV) as it may prevent the rubber beads from compressing correctly. The gasket can be installed dry.
Torque bolts in a cross pattern to 20 Nm + 90° angle. Re‑torquing is not required after heat cycles due to the compression limiters.
To correctly install the WG9761349013 Oil Pan Sealing Gasket, follow these steps: 1) Drain engine oil and remove the oil pan. Clean all old gasket residue from both the pan and block using a plastic scraper (avoid steel tools that scratch).
2) Degrease both flanges with brake cleaner and a lint‑free cloth. Surfaces must be completely dry and free of oil. 3) Place the new gasket onto the oil pan, aligning the bolt holes. The gasket is symmetrical, but ensure the sealing beads face upward toward the block.
4) Install the oil pan with the gasket in place. Start all bolts by hand, then torque in a cross pattern to 10 Nm, then final torque to 20 Nm, and finally apply 90° additional angle.
5) Refill with engine oil, run engine to operating temperature, and inspect for leaks. Re‑torquing is not required. If a leak is detected, check for surface damage or warped oil pan flange.
The WG9761349013 gasket is designed to be reused if the oil pan is removed for inspection or bearing replacement. Inspect the rubber beads for tearing or compression set (flattening). If the beads are still resilient, the gasket can be reinstalled.
Do not use any sealant on a reused gasket. Clean both flanges and the gasket itself with a gentle solvent, dry thoroughly, and reinstall using the same torque procedure. Maximum recommended reuse is three times.
If the gasket shows any cracks, hardening, or missing rubber, replace it with a new WG9761349013. Store spare gaskets flat in a cool, dry place away from UV light.
Every batch of WG9761349013 is tested in an accredited laboratory. Tests include: (1) Oil immersion test (150°C for 168 hours, no change in hardness >5 Shore A), (2) Compression set (≤15% after 22h at 150°C), (3) Tensile strength of rubber‑to‑steel bond (≥ 2.5 N/mm).
(4) Thermal cycle test (‑40°C to +150°C, 100 cycles without leakage), (5) Leak test on a pressurized fixture (2 bar oil pressure, 100,000 pressure pulses). The gasket is made in an IATF 16949 certified facility with full traceability.
Each gasket is laser‑marked with the SINOTRUK Homan logo, OEM number, and production date. This allows quality traceability back to the molding cavity.
A long‑haul fleet in Poland replaced cork gaskets with the WG9761349013 on 90 MAN‑engined trucks. After two years, zero oil pan leaks were reported, whereas previously 30% of trucks had minor seepage requiring retightening. The maintenance manager estimated annual savings of 1,500 man‑hours.
A construction company using HOWO dump trucks in Indonesia noted that the rubber‑steel gasket survived repeated oil pan removals for sludge cleaning without needing replacement, unlike paper gaskets that tore every time.
Each WG9761349013 Oil Pan Sealing Gasket is packaged flat in a heavy‑duty plastic bag with a cardboard backing to prevent bending. The bag is sealed with a tamper‑evident label.
A holographic foil sticker with the SINOTRUK Homan logo and a unique QR code is attached to the bag. Scanning the code opens the verification page. Counterfeit gaskets often use inferior rubber that hardens or has a strong sulfur smell (indicative of low‑grade NBR).
Genuine WG9761349013 gaskets have a satin‑black steel carrier and dark gray rubber beads. The rubber is flexible and has a faint, non‑offensive odor. Always buy from authorized distributors to ensure genuine material performance.
Summary: The SINOTRUK Homan Oil Pan Sealing Gasket (OEM WG9761349013) provides permanent leak protection, high temperature resistance, and reusability for heavy‑duty diesel engines. Upgrade your engine sealing with genuine OEM composite gaskets – the smart choice for clean, reliable operation.
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