OEM PART NUMBERS:
• Mercury/Quicksilver: 12644A1 (original OEM)
• Mercury/Quicksilver: 12644Q01 (current OEM supersession)
• MPN: 18-4457
SPECIFICATIONS:
• Type: External Exhaust Flapper / Protector Valve
• Size: 4 INCH (101.6mm) diameter
• Material: EPDM Rubber with UV Stabilizer
• Construction: One-piece molded rubber flap
• Hardware: Stainless Steel Hose Clamp (included)
• Position: External transom exhaust outlet
• Function: Prevents water backflow into exhaust
• Environment: Salt water and fresh water compatible
• Resistance: UV, ozone, heat, weather aging
• Compatibility: MerCruiser with 4-inch exhaust outlet
• Production Era: 1994 and Up
• Tool Category: Marine Exhaust Replacement Part
• Condition: New
APPLICATIONS:
• MerCruiser Alpha One / Alpha One Gen II Sterndrive
• MerCruiser Bravo One / Bravo Two / Bravo Three Sterndrive
• MerCruiser MC-I / R-MR Sterndrive (legacy)
• MerCruiser inboard installations with 4" outlet
• MerCruiser 4.3L V6 (262 CID) engines
• MerCruiser 5.0L / 5.7L / 7.4L / 8.2L V8 engines
• Universal fit for any MerCruiser with 4" transom outlet
• Does NOT fit 3 inch or 5/6 inch exhaust outlets
• Does NOT fit Mercury outboard motors
• Does NOT fit Volvo Penta, OMC Cobra sterndrives
• Does NOT replace internal Y-pipe water shutters (different product)
PRODUCT NOTICE:
As a parts distributor we mostly sell aftermarket parts (any OEM parts would be noted as such). Aftermarket parts are not sourced from the original vehicle or equipment manufacturer, but are designed to function the same as - if not better than - the original. All parts sold are new.
WARNING - This product may expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov
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