Feature 1Perfect Fitment: Boat thermostat kit is replacement for MerCruiser with Sleeve 160 4.3L 5.0L 5.7L 7.4L 8.2L 1987 Up, perfect matching. 2Replace Part Number: The part number of replacement thermostat kit is 807252Q5, replacement for Sierra 183647, according to original standard. 3Material: Thermostat kit is made of ABS and metal material, rustproof, high strength, sturdy and durable. 4Excellent Performance: Professional manufacturing, exquisite workmanship, high accuracy, stable performance and high reliability. 5Simple Installation: The installation is simple, direct replacement for the old or broken one, convenient for using, save your time and energy.Item Type: ThermostatKitMaterial: ABSandmetalReplacePartNumber:807252Q5,replacementforSierra183647Fitment:Fit forengines with a 160-degree thermostat and standard cooling 1987 newerReplacementforMerCruiserwithSleeve1604.3L5.0L5.7L7.4L8.2L1987 Up .wang-edit-text{ font-family:'Arial' important } .wang-edit-text table { border-top: 1px solid 000 border-left: 1px solid 000 } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000 border-right: 1px solid 000 padding: 3px 5px } .wang-edit-text table th { text-align: center }Package List1 xThermostat1 xBushing4 xSealing GasketNotePlease double check the part number of your item, matching information is for reference only. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks