Description
Technical Overview & Product Details
Connecting rod bolts are among the most highly stressed fasteners in a marine diesel engine. The 146673-23220 is manufactured using specialized alloy steel, heat-treated to achieve the precise tensile strength and elasticity required to maintain consistent clamping force under varying thermal and mechanical stresses.
- Compatible Engine Type: Yanmar marine propulsion and auxiliary engine series.
- Part Number / Designation: 146673-23220.
- Component Type: Connecting Rod Bolt.
- Material: High-tensile, heat-treated alloy steel designed for extreme fatigue resistance.
- Application: Securing the connecting rod cap to the connecting rod assembly.
Key Features & Performance
- High-Tensile Strength: Engineered to maintain structural integrity under extreme reciprocating forces, preventing bolt stretch or fatigue-related failure.
- Precision Threading: Machined to exact thread tolerances to ensure proper torque application and secure, vibration-resistant fastening.
- Fatigue Resistance: The material composition is optimized to endure high-frequency cyclic stress, ensuring long-term reliability during continuous marine service.
- Dimensional Consistency: Manufactured to rigorous standards to guarantee uniform clamping force across all connecting rod assemblies in the engine.
Why Source from Heybeli Marine?
A loose or failed connecting rod bolt can lead to immediate and total engine destruction. Heybeli Marine protects your vessel’s performance with:
- Strict OEM Interchangeability: Our 146673-23220 bolts are manufactured to meet the exact metallurgical and dimensional specifications required for Yanmar engines.
- Global Strategic Logistics: We maintain a ready-to-ship inventory of these critical safety-related parts, ensuring they reach your vessel or shipyard quickly to avoid maintenance delays.
- Quality Assurance: Every batch undergoes strict quality control and stress-testing to ensure the bolts can withstand the heavy-duty conditions of maritime operations.
- Complete Overhaul Support: We provide these bolts alongside crankpin bearings, pistons, and other internal components to help you conduct a professional, total engine rebuild.
Technical Maintenance Note:
It is critical to follow the torque and tightening sequence specifications outlined in the Yanmar service manual when installing the 146673-23220. These bolts are often designed for “torque-to-yield” or specific elongation measurements; therefore, reusing old bolts is generally not recommended as they may have experienced permanent deformation. Always clean the threads of the connecting rod housing thoroughly and apply a light coat of clean engine oil or authorized assembly lubricant to the bolt threads and the underside of the bolt head before installation to ensure accurate torque readings.