Big Block and Small Block Chevy Stainless Steel Mercruiser Thermostat Housing Replaces Mercury 860256A4 ronstan ball bearing utility blocks - series 20 - cheek block single rivet mount as this stern light is

as this stern light is approved for boats up to 20 metres

Threads into SB Chev Water inlet plates

NGK Spark Plug - TR5IX (4 Per Box)

The strap and hook is included upon purchase

Oceanmax has been tackling the issue for over 20 years

Big Block and Small Block Chevy Stainless Steel Mercruiser Thermostat Housing Replaces Mercury 860256A4 ronstan ball bearing utility blocks - series 20 - cheek block single rivet mount as this stern light isStainless Steel Thermostat HousingBig Block & Small Block Chevy with Circulating Pump Low Profile & EFI These beautiful cast stainless steel thermostat housings are designed to replace that ugly black factory cast iron unit that is original equipment on most Mercruiser applications. Its gleaming polished finish adds sparkle to any engine. Designed to work in conjunction with the factory circulating pump and available in both standard height and low