8-97096824-0 CUP; SEALING,FRT & RR ISUZU for ZX200-3/4HK1

Critical Sealing Plugs for Engine Block Fluid Passages

This component comprises precision sealing cups (also known as core plugs or expansion plugs) installed at the front and rear of the Isuzu engine block. They seal off the casting core holes used in manufacturing the engine block's cooling system and oil galleries . Their primary function is to prevent coolant or engine oil from leaking out, which is essential for maintaining proper engine temperature and lubrication. They are critical components used across a wide range of Isuzu engines, including the 4JG1, 4JG2, 4JK1, 4JJ1, and 6WG1 series .

Durable Construction and Precision Fitment

Isuzu Genuine sealing cups are manufactured from high-quality materials, such as steel or brass, selected for their strength, heat resistance, and corrosion resistance . They are available in a variety of sizes—including outer diameters of 16, 18, 32, 36, 38, and 45 mm—to precisely match the specific bore dimensions for different engine applications . Proper installation is critical for a lasting seal. Service procedures often require applying a sealant (such as Isuzu-specified ThreeBond 1207B or equivalent) to the plug or sealing washer, with the plug seated either slightly below flush or with a specific protrusion from the block face to ensure a leak-proof fit .