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Model: GLM-15301 for Chevrolet V8 Big block marine engine, fits both tin & aluminum timing chain cover. 409 (6.6L), 427 (6.9L), 454 (7.4L) Features machined brass impeller, bi-directional and balanced stainless steel seal cup and spring, stainless banded ceramic seal seat, stainless steel backing plate and epoxy painted pump housing |