Cummins Z14 engine parts Exhaust branch pipe gasket C5612838

Built to endure the extreme thermal stress of the Z14’s exhaust system, this gasket features a multi-layer composite structure centered on high-performance materials. The core layer uses 304 stainless steel (tensile strength ≥515MPa) for structural stability, while the sealing surfaces are coated with a 0.5mm-thick Inconel alloy layer—resisting continuous operating temperatures up to 850℃ and peak temperatures of 1000℃ (during engine startup and heavy loads). The composite structure eliminates thermal expansion mismatch between the exhaust pipe and cylinder head, maintaining sealing integrity even after 500 thermal cycles (-40℃ to 800℃). Unlike ordinary graphite gaskets, it shows no carbonization or brittleness, ensuring reliable performance throughout the engine’s service life

Engineered to achieve zero exhaust leakage, the gasket adopts a triple-seal structure that enhances sealing performance under high pressure. It integrates two metal core layers with a corrugated middle layer—creating a flexible yet robust sealing interface that compensates for minor surface irregularities (≤0.1mm) on the exhaust pipe and cylinder head. The bolt hole peripheries are reinforced with stainless steel washers, preventing gasket extrusion and bolt loosening under 1.2MPa exhaust pressure. Each exhaust port features an independent sealing lobe, isolating individual cylinder exhaust flows and avoiding cross-contamination. This design reduces exhaust leakage rate to ≤0.01L/min, far below the 0.1L/min industry limit, ensuring optimal SCR system efficiency and emission compliance

Designed to resist the corrosive elements in diesel exhaust, the gasket exhibits exceptional chemical stability. The Inconel coating is inert to nitrogen oxides (NOx), sulfur dioxide (SO₂), and particulate matter (PM) in exhaust gas, preventing chemical erosion that causes gasket failure. The stainless steel core resists rust and oxidation, even in high-humidity environments or when exposed to road salt (critical for trucks operating in coastal or snowy regions). The gasket undergoes a 1000-hour salt spray test (ASTM B117) with no corrosion, and a 500-hour exhaust gas exposure test with no material degradation. This resistance ensures the gasket maintains sealing performance for ≥150,000km, matching the Z14 engine’s maintenance cycle

Optimized for efficient fleet maintenance, the exhaust branch pipe gasket features a user-friendly design. It comes pre-coated with a high-temperature anti-seize compound, eliminating the need for additional sealants and ensuring easy disassembly during future maintenance. The 6 bolt holes align perfectly with the cylinder head and exhaust pipe mounting points, using M16×25 grade 10.9 bolts (torque specification: 120-130N·m) that require standard tools for installation. A single technician can replace the gasket in 60 minutes, 30% faster than non-OE gaskets. The gasket’s rigid yet flexible structure maintains shape during handling, avoiding deformation that causes installation errors. With 100% factory leak testing and a 1-year warranty, it minimizes the risk of rework and ensures reliable performance, reducing fleet operational costs