{"product_id":"osculati-16-194-27-replacement-impeller-cef-178","title":"Osculati 16.194.27 Replacement Impeller (CEF 178)","description":"\u003cp\u003e12-blade neoprene impeller for Sherwood raw water pumps. Spline drive, 14.4mm shaft bore. Supplied with gasket.\u003cbr\u003e\u003cbr\u003eThe 57mm OD and 48.5mm length place this impeller in the mid-range of the Sherwood line-up — larger than the compact G-series pumps and shorter than the deeper-bore units used on higher-displacement engines. The spline drive shaft interface is the critical fitment detail to confirm before ordering; this is not interchangeable with the keyed or pin-drive versions of superficially similar-looking impellers in the Sherwood range.\u003cbr\u003e\u003cbr\u003eAnnual replacement is recommended as standard practice regardless of apparent condition. Neoprene blades fatigue progressively under load and can fail without visible warning; replacing on schedule is substantially less disruptive than dealing with a cooling failure at sea.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e•    Outside diameter: 57mm\u003cbr\u003e•    Length: 48.5mm\u003cbr\u003e•    Shaft bore: 14.4mm (spline drive)\u003cbr\u003e•    Blades: 12\u003cbr\u003e•    Material: Neoprene\u003cbr\u003e•    Supplied with: gasket\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eOEM cross-reference\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eCEF 500178 · Sherwood kit number: TBC — check pump housing markings\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eEngine \/ pump application\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003eSherwood inboard raw water pumps — specific pump models and engine application list to be confirmed from pump housing. Please contact us with your pump model number before ordering if unsure.\u003cbr\u003e\u003c\/p\u003e","brand":"Boat Fittings","offers":[{"title":"Default Title","offer_id":57301707948407,"sku":"SM-2200","price":68.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0592\/5679\/9306\/files\/SM-2200-2.jpg?v=1784054515","url":"https:\/\/www.boatfittings.co.uk\/products\/osculati-16-194-27-replacement-impeller-cef-178","provider":"Boat Fittings","version":"1.0","type":"link"}