CAT 171-4573 30.25mm Wide Exhaust Elbow Adapter

CAT 171-4573 is a Caterpillar genuine ductile iron exhaust elbow connector (also commonly known as an exhaust adapter/exhaust fitting). It is used to connect the exhaust outlet of the turbocharger in large engines such as the 3512B/3516B to the engine exhaust unit. It is used to seal the exhaust passage, optimize exhaust airflow, and withstand high temperatures and pressures, making it a critical sealing connection component in the engine exhaust system.

Core Technical Parameters

Item Details
Part Model CAT 171-4573 Exhaust Elbow Connector (Exhaust Adapter)

Material: Ductile iron, high temperature resistant (≤850℃), resistant to thermal fatigue, suitable for high-temperature exhaust conditions after turbocharger, balancing strength and toughness (Cat®)…

Key Dimensions: Width approximately 30.25mm, flange end includes 6 11mm diameter mounting holes, suitable for turbocharger exhaust outlet flanges and exhaust manifold/exhaust pipe flanges, smooth interface sealing surface ensures no leakage after bolt tightening (Cat®)…

Compatible Engines: Caterpillar 3512B, 3516B and other large marine/generator engines, used for transition connection between turbocharger and exhaust system

Performance Characteristics: Flange connection at both ends, precise installation positioning; absorbs thermal expansion and contraction displacement of the exhaust system, reducing stress on the turbocharger and exhaust unit; resistant to exhaust corrosion, reliable sealing, reducing the risk of exhaust leakage (Cat®) …Core Functions and Structure

Exhaust Passage Connection: Connects the turbocharger exhaust outlet to the engine exhaust unit, forming a closed exhaust passage to ensure smooth exhaust flow and prevent exhaust gas leakage from affecting engine performance and personnel safety (Cat®)…

Thermal Compensation and Stress Buffering: The elasticity of the ductile iron material absorbs displacement caused by thermal expansion and contraction of the exhaust system, reducing the connection stress between the turbocharger and exhaust components and preventing cracking of joints or turbine housings (Cat®)…

Sealing Protection: The flange sealing surface, in conjunction with a gasket, achieves reliable sealing of high-temperature, high-pressure exhaust, reducing power loss and environmental pollution caused by exhaust leakage (Cat®)…

Airflow Optimization: The elbow design adapts to the exhaust airflow direction, reducing exhaust resistance, improving turbocharger efficiency, and ensuring stable engine power output (Cat®)…

Installation and Maintenance Points

Installation Specifications: Clean the joint flange surface, turbocharger exhaust outlet flange, and exhaust unit flange to remove oil, carbon deposits, and rust. Check the sealing surface for scratches and deformation, ensuring a smooth and snug fit (Cat®)…

Use original high-temperature resistant gaskets (such as spiral wound gaskets), and tighten bolts evenly in a diagonal sequence, controlling the torque (refer to the model manual, typically 80-100 N·m) to avoid flange deformation leading to leakage.

After installation, check the coaxiality of the joint, turbine, and exhaust unit to prevent exhaust airflow deviation that could cause localized wear or vibration.

Maintenance Recommendations: Every 1000-1500 working hours, check for cracks in the joint, corrosion on the flange surface, loose bolts, and any signs of exhaust leakage at the seals (such as oil fumes or abnormal carbon buildup).

Regularly clean carbon deposits inside the joints to prevent excessive carbon buildup from affecting exhaust airflow; if flange deformation, gasket aging, or joint cracks are found, replace the joint and gasket promptly to prevent further exhaust leakage.