{"product_id":"sierra-18-3577-2-circulating-water-pump-bronze-replaces-oem-67859-big-block-gm-engines-with-stamped-steel-timing-covers","title":"Sierra Circulating Water Pump 18-3577-2 for GM 4 Cyl. And In-Line 6 Cyl. Engines, 3.0L 4 Cyl.","description":"\u003cp\u003eThe Sierra 18-3577-2 is a bronze circulating water pump built for marine engine cooling systems, designed to fit 3.0L 4 cylinder engines as well as GM 4 cylinder and in-line 6 cylinder engines. As a circulating water pump, it moves coolant through the engine block to maintain proper operating temperature, a critical function for reliable performance on the water. The pump is bronze construction, chosen for its corrosion resistance in marine environments where constant exposure to moisture and coolant demands durable materials.\u003c\/p\u003e\u003cp\u003eThis pump is bi-directional, meaning it is engineered to operate correctly regardless of rotation direction, simplifying installation across different engine configurations. A matching 18-0327 gasket is included with the pump, so the seal needed for a proper installation is provided in the box rather than requiring a separate purchase. Buyers replacing a worn or leaking circulating water pump on a compatible 3.0L 4 cylinder or GM 4\/6 cylinder marine engine can use the 18-3577-2 as a direct fit for these applications.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Sierra\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 18-3577-2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circulating Water Pump\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Bronze\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotation:\u003c\/strong\u003e Bi-Directional\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGasket Included:\u003c\/strong\u003e 18-0327\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 3.0L 4 cyl. Engines, GM 4 cyl. And in-line 6 cyl. Engines\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 14.59 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 808282374815\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVehicle Service Type:\u003c\/strong\u003e Boat\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e3.0L 4 cylinder engines\u003c\/li\u003e\n\u003cli\u003eGM 4 cylinder and in-line 6 cylinder engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat engines does the Sierra 18-3577-2 water pump fit?\u003c\/strong\u003e The 18-3577-2 fits 3.0L 4 cylinder engines as well as GM 4 cylinder and in-line 6 cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs a gasket included with this water pump?\u003c\/strong\u003e Yes, the 18-3577-2 comes with a matching 18-0327 gasket included, so no separate gasket purchase is needed for installation.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the 18-3577-2 water pump made from?\u003c\/strong\u003e It is made from bronze, a material chosen for its corrosion resistance in marine cooling system applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the pump rotation direction matter for installation?\u003c\/strong\u003e No, the 18-3577-2 is bi-directional, so it is designed to function correctly regardless of rotation direction.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the Sierra 18-3577-2 water pump weigh?\u003c\/strong\u003e The 18-3577-2 weighs 14.59 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill this pump work on a GM in-line 6 cylinder marine engine?\u003c\/strong\u003e Yes, the 18-3577-2 is listed to fit GM 4 cylinder and in-line 6 cylinder engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 18-3577-2 a genuine Sierra part?\u003c\/strong\u003e Yes, 18-3577-2 is the manufacturer part number for this Sierra circulating water pump.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is included in the box with this water pump?\u003c\/strong\u003e The package includes the Sierra 18-3577-2 circulating water pump and the matching 18-0327 gasket.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat type of pump is the 18-3577-2?\u003c\/strong\u003e The 18-3577-2 is a circulating water pump used in a marine engine's cooling system to move coolant through the engine block.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 18-3577-2 fit 3.0L engines only?\u003c\/strong\u003e No, in addition to 3.0L 4 cylinder engines, the 18-3577-2 also fits GM 4 cylinder and in-line 6 cylinder engines.\u003c\/p\u003e","brand":"Sierra","offers":[{"title":"Default Title","offer_id":48988153872603,"sku":"SIE-18-3577-2","price":194.38,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/SIE-18-3577_lg__00619.1558125148.500.750.jpg?v=1785188254","url":"https:\/\/www.goodvibesmarina.com\/products\/sierra-18-3577-2-circulating-water-pump-bronze-replaces-oem-67859-big-block-gm-engines-with-stamped-steel-timing-covers","provider":"Good Vibes Marina","version":"1.0","type":"link"}