The YNF17890 Main Bearing STD (3945917) is a precision-engineered crankshaft bearing assembly designed for QSL9 engines. This high-quality bearing supports the crankshaft, ensuring smooth rotation, reducing friction, and maintaining optimal engine performance. Manufactured with durable, wear-resistant materials, it guarantees long-lasting service under heavy-duty conditions. Ideal for engine maintenance, repair, and complete rebuilds.

• Part No.: YNF17890

• OEM reference: 3945917

• Compatible Models: QSL9 engines

• Type: Main Bearing / Crankshaft Bearing Assembly

• High-precision, durable construction

• Supports crankshaft rotation and reduces friction

• Prevents engine wear and maintains optimal performance

• OEM-equivalent design for direct replacement

• Long service life in demanding operating conditions

• QSL9 engine crankshaft support and assembly

• Engine rebuilds and major maintenance

• Excavators, generators, and heavy machinery

• Replacement of worn or damaged main bearings

• Workshops and field service operations

• Verification of bearing compatibility with your engine

• Technical guidance for installation and assembly

• Supply of related engine components and bearing kits

• OEM-equivalent and aftermarket solutions

• Individually packed to prevent damage

• Dust- and moisture-proof protective packaging

• Export-grade cartons or crates for bulk shipments

• Suitable for express, air, or sea transport

Q: Will this main bearing fit my QSL9 engine?
A: Yes, it is specifically designed for QSL9 engines.

Q: What material is this bearing made from?
A: High-strength, wear-resistant materials suitable for heavy-duty engine operation.

Q: Can it handle continuous heavy-duty use?
A: Yes, it is engineered for long-lasting performance under demanding conditions.

Q: Is it OEM-equivalent?
A: Yes, it meets OEM specifications for direct replacement.