30PCS M8 Exhaust Manifold Hex Nuts M8×1.25 Copper Plated Self-Locking Flange Seal Nut Kit OEM Replacement #A1201420072 Header Exhaust Manifold Nuts Universal Fit Cars Trucks

This M8×1.25 exhaust manifold hex nut kit is designed as a direct OEM replacement for part number A1201420072. It is engineered for exhaust system applications where high temperature resistance, vibration stability, and secure fastening are required.Manufactured from high-strength iron material with a copper plated surface, the nuts provide improved resistance against corrosion, rust, and thermal deformation. This ensures long-term durability in harsh exhaust environments.The precision M8×1.25 threading allows accurate engagement with exhaust manifold studs and flange assemblies, reducing the risk of gas leakage and improving overall exhaust sealing performance.The flange structure increases contact area between components, helping distribute load evenly and improving resistance against loosening caused by engine vibration and thermal cycling.This kit includes 30 pieces of exhaust manifold hex nuts, suitable for repair, replacement, or maintenance of exhaust manifolds, header systems, and pipe connections in automotive applications.

• OEM Replacement Standard Fitment Designed as OEM replacement for part number A1201420072, manufactured strictly to M8×1.25 standard thread specification. Ensures precise fit for exhaust manifold and flange connection points without modification.
• Copper Plated High Strength Construction Made of high-strength iron alloy with copper plated surface, providing enhanced corrosion resistance, heat resistance, and long-term durability. Maintains structural stability under extreme engine temperature and vibration environments.
• Exhaust System Sealing Performance Precision thread design ensures tight engagement with exhaust manifold, helping reduce exhaust leakage and noise. Improves sealing efficiency at flange joints and supports stable exhaust flow performance.
• Flange Design for Stable Clamping Force Flange base design increases contact area, distributing clamping force evenly across the connection surface. Helps prevent loosening caused by vibration and thermal expansion in exhaust systems.
• 30PCS Universal Repair Kit Each package includes 30 M8×1.25 hex flange nuts, suitable for exhaust manifold, piping, muffler, and flange repairs. Compact and easy to store, ideal for maintenance, replacement, or spare use.