{"product_id":"attwood-278ao3am-1-278-series-air-mount-pro-seat-mount-oem-763499-heavy-duty-cast-boat-helm-seat-pedestal-mount","title":"Attwood 278AO3AM-1 278 Series Pro Mount Boat Seat Base, 0 Degree Tilt, ABYC AO","description":"\u003cp\u003eThe Attwood 278AO3AM-1 is a 278 Series Pro Mount seat base designed to support popular oversized helm seats with a heavy-duty cast construction. Built as a rigid, fixed mount with a 0 degree tilt, it provides a stable, non-sliding platform between a boat's seat pedestal and the seat itself. A wider seat interface spreads load across the mounting surface, adding pedestal robustness for larger and heavier helm seats that place greater stress on the mount. Attwood classifies this mount under ABYC Code AO. This Pro Mount version is the fixed-tilt counterpart to Attwood's 278 AirGlide Slider mounts, which add fore-and-aft sliding adjustment; the 278AO3AM-1 instead delivers a solid, non-moving base for boaters who prioritize stability over adjustability. It corresponds to OEM part number 763499, making it a straightforward replacement when that reference number is called for. The mount measures 14.65 x 8.74 x 5.16 inches and weighs 3.3333 pounds. It is sold under UPC 022697278296 and is categorized as a seat pedestal mount, intended for boaters upgrading or replacing worn seat bases who need the added strength of a heavy-duty casting beneath an oversized helm seat.\u003c\/p\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Attwood\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number:\u003c\/strong\u003e 278AO3AM-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type:\u003c\/strong\u003e Pro Mount (fixed, non-sliding)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTilt Angle:\u003c\/strong\u003e 0 Degree\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eABYC Code:\u003c\/strong\u003e AO\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 3.3333 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 14.65 x 8.74 x 5.16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUPC:\u003c\/strong\u003e 022697278296\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Seat Pedestal Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM Cross Reference:\u003c\/strong\u003e 763499\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment\u003c\/h3\u003e\u003cp\u003eUniversal seat pedestal mount; no engine, make, or model-specific fitment is specified.\u003c\/p\u003e\u003ch3\u003eReplaces (OEM)\u003c\/h3\u003e\u003cul\u003e\u003cli\u003e763499\u003c\/li\u003e\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhat is the Attwood 278AO3AM-1 used for?\u003c\/strong\u003e The 278AO3AM-1 is a 278 Series Pro Mount seat base that mounts between a boat's seat pedestal and helm seat, giving oversized helm seats a rigid, heavy-duty support point.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 278AO3AM-1 tilt or slide?\u003c\/strong\u003e No. The 278AO3AM-1 Pro Mount is a fixed base with a 0 degree tilt angle and does not slide fore or aft; Attwood's separate AirGlide Slider mounts (such as the 278AOZAM-1) add that sliding adjustment.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat OEM part number does the Attwood 278AO3AM-1 replace?\u003c\/strong\u003e The Attwood 278AO3AM-1 corresponds to OEM part number 763499.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow much does the 278AO3AM-1 seat mount weigh?\u003c\/strong\u003e The Attwood 278AO3AM-1 weighs 3.3333 pounds.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat are the dimensions of the Attwood 278AO3AM-1?\u003c\/strong\u003e The 278AO3AM-1 measures 14.65 x 8.74 x 5.16 inches.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the ABYC code for the 278AO3AM-1?\u003c\/strong\u003e Attwood classifies the 278AO3AM-1 under ABYC Code AO.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs the 278AO3AM-1 rated for oversized helm seats?\u003c\/strong\u003e Yes, the 278AO3AM-1's heavy-duty casting and wider seat interface are built to support popular oversized helm seats.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat material is the Attwood 278AO3AM-1 made from?\u003c\/strong\u003e The 278AO3AM-1 features a heavy-duty cast construction; Attwood's published data does not specify the exact casting material.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat is the UPC for the Attwood 278AO3AM-1?\u003c\/strong\u003e The Attwood 278AO3AM-1 is sold under UPC 022697278296.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow is the 278AO3AM-1 different from the 278 AirGlide Slider mounts?\u003c\/strong\u003e The 278AO3AM-1 is the fixed Pro Mount version with a 0 degree tilt, while Attwood's 278 AirGlide Slider mounts (278AOZAM-1 and 278AOZAGS-1) add fore-and-aft sliding motion instead of a fixed base.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes the 278AO3AM-1 include mounting hardware in the box?\u003c\/strong\u003e Attwood's published specifications for the 278AO3AM-1 do not list included hardware or accessories.\u003c\/p\u003e","brand":"Attwood","offers":[{"title":"Default Title","offer_id":48989668901083,"sku":"ATT-278AO3AM-1","price":70.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/7586\/4539\/files\/Attwood-Air-System-Boat-Seat-Mount-278AO3AM-1__95138.1727449145.500.750.jpg?v=1785188066","url":"https:\/\/www.goodvibesmarina.com\/products\/attwood-278ao3am-1-278-series-air-mount-pro-seat-mount-oem-763499-heavy-duty-cast-boat-helm-seat-pedestal-mount","provider":"Good Vibes Marina","version":"1.0","type":"link"}