SUGGESGIVE JN Diesel Injection Pump Line Washers are engineered for professional-grade performance in heavy-duty diesel applications. These precision seals feature a copper-nickel alloy core with a polymer-coated exterior, achieving optimal compression between fuel lines and injection pumps. Ideal for agricultural machinery, marine engines, and truck fleets, our washers prevent fuel leaks even under continuous vibration and thermal cycling. Each set includes 12 industry-standard washers (OD: 12mm, ID: 8mm) packaged in corrosion-resistant foil pouches for long-term storage. Backed by SUGGESGIVE JN's rigorous quality control and global ISO 9001 certification.