This listing is for a BRAND NEW GLM water circulating pump with gaskets for Mercruiser, OMC, and Volvo Penta models with Chevrolet 427ci/7.0L, 454ci/7.4L, or 502ci/8.2L big block engines. P/N 15301 (GL15301); equivalent to Mercruiser P/N 850454-1 and OMC P/N 3855991. Image shown is of actual product. This is a new design water pump and fits both metal and aluminum timing chain covers. All new GLM water pumps have the following features: Machined brass impeller, bi-directional, and balanced
Stainless steel seal cup and spring
Stainless banded ceramic seal set
Stainless steel backing plate
Painted pump housing
