These heavy-duty exhaust brake manifold gaskets are designed specifically for Isuzu commercial trucks, including NRR, NPR, NPR-HD, and NQR models. Compatible with multiple engine types including 4HE1 4.8L, 4JJ1 3.0L, and 4HK1 5.2L from 1994-2024, these gaskets provide essential sealing between the exhaust manifold and engine block. The durable metallic construction features a textured surface pattern and precisely positioned bolt holes for secure installation. These replacement gaskets help maintain proper exhaust system function and prevent leaks that could affect engine performance. Each pack includes two gaskets, perfect for complete manifold service. Ideal for fleet maintenance and professional repair applications, these gaskets are manufactured to meet precise specifications for reliable, long-lasting performance in commercial vehicle applications.