Genuine Sinotruk HOWO Engine Full Gasket Overhaul Repair Kit (Part No 1002580535)

The 1002580535 Gasket Kit is a curated set of Sinotruk spare parts specifically designed for the HOWO D12 series engine. This kit eliminates the guesswork of sourcing individual seals, providing a factory-matched solution that ensures vacuum-tight sealing and thermal resistance under heavy load conditions.

Every component in this repair kit meets the original Sinotruk material standards, utilizing reinforced composites and high-temp resistant elastomers to prevent oil leaks and coolant cross-contamination.

Technical Specifications & Kit Contents:

• Kit Part Number: 1002580535

• Compatible Engine: Sinotruk HOWO D12.42, D12.38, D12.46 Engines

• Main Cylinder Head Gasket: Multi-layer Steel (MLS) for high-combustion pressure.

• Valve Cover Gasket: High-grade Nitrile/Silicone blend.

• Oil Seals: Double-lipped Viton seals for crankshaft (Front & Rear).

• Intake/Exhaust Manifold Gaskets: Multi-layer heat-shielding composites.

• Valve Stem Seals: 24-piece set included (for 24-valve D12 heads).

• O-Rings & Washers: Complete copper and rubber sealing washer set for fuel and cooling lines.

Installation Tips for Professional Mechanics:

1. Surface Preparation is Non-Negotiable: Before unboxing your 1002580535 kit, ensure the engine block and cylinder head surfaces are cleaned using a plastic scraper. Never use wire brushes or metal scrapers on aluminum mating surfaces as microscopic scratches lead to “gasket blow-by.”

2. Dry vs. Wet Installation: The head gaskets in this Sinotruk repair kit are designed to be installed dry. Do not apply extra RTV silicone or copper spray unless specifically directed by the latest Sinotruk service bulletin for that specific engine block revision.

3. Torque Sequence: Always follow the Sinotruk D12 factory torque-to-yield sequence. Using an uncalibrated torque wrench is the most common reason for gasket failure in “Sinotruk spare parts” replacements.

4. Seal Orientation: When installing the crankshaft oil seals included in the kit, ensure the seal lips are facing the oil pressure side. Lightly coat the inner lip with clean engine oil, but keep the outer diameter dry for a press-fit.

5. Check for “Old Stock” Hardening: Even genuine gaskets have a shelf life. We guarantee that our 1002580535 kits are from the latest production batches, ensuring the rubber remains supple and responsive to thermal expansion.