1100193FA040 Fuel Injector Gasket is a heat-resistant sealing washer installed between fuel injector nozzle and cylinder head bore for JAC HFC4DA1-2B diesel engine. It fills the gap at the injector seat, blocks high-temperature combustion gas blow-by and prevents flame leakage from the combustion chamber. This aftermarket replacement gasket solves exhaust gas leakage, carbon buildup around injector base and power reduction issues caused by gasket deformation, ablation and surface denting after long service. Reliable sealing maintains stable combustion state and protects injector assembly for light trucks used in urban delivery and short-haul freight scenarios.

Product Advantages Made of soft annealed copper material with excellent thermal conductivity and plastic deformation property. It can form a tight sealing line under clamping pressure and withstand continuous high combustion temperature. Uniform thickness ensures consistent injector protrusion depth after installation. Each gasket is checked for flatness and thickness tolerance before packing, simple ring structure for convenient replacement during injector overhaul.

Applicable Models Compatible with JAC light commercial trucks equipped with HFC4DA1-2B diesel engine, widely applied for local cargo distribution.

FAQ

Q1: What will happen if this copper gasket is reused after removal?
A1: It has already been compressed and cannot form a reliable seal, easily leading to gas blow-by again.
Q2: Why clean the injector seat surface thoroughly before fitting the new gasket?
A2: Carbon deposits on the seat create uneven support and break the continuous sealing surface.
Q3: Does uneven injector clamping torque affect the gasket sealing effect?
A3: Uneven pressure leads to partial gap, causing local gas leakage and gasket burnout.