{"product_id":"mcs946470","title":"Hastings 3-5\/16\" Piston Rings. Std – 1937–1948 74\" (1200cc) U; UL Model…","description":"\u003ch2\u003eHastings 3-5\/16\" Piston Rings. STD – 1937–1948 74\" (1200cc) U; UL Model…\u003c\/h2\u003e\n\u003cp\u003e3-5\/16\" piston ring set with 3\/32\" (.09375\") gray iron parkerized compression and 3\/16\" (.186\") chromed 3-piece oil rings. Fits 37-48 74\" (1200cc) ''U'' model Flatheads and 48-52 61\" (1000cc) E; EL Panhead models. Std bore: 3-5\/16\" (84.138mm). 1st ring: 2.38mm (3\/32\"). 2nd ring: 2.38mm (3\/32\"). oil ring: 4.75mm (3\/16\"). Tech tip: Piston grooves vs piston rings. It''s not difficult to determine if a Hastings piston ring set will fit a certain piston. You should measure the height of the piston groove in the piston itself. The 2 top grooves will be for compression rings; the lower groove will be for the oil ring. In most cases Hastings oil rings are of the low tension 3-piece flex vent type. Ring heights are listed for reference. Tech tip: Piston oversizes. For each oversize cylinder diameter will increase with .010\" (0.254mm). The standard bore of the cylinder is listed for reference. (Tech tip information provided by Hastings Manufacturing Company; Inc.)\u003c\/p\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003e37-48 74\" (1200cc) U; UL model Flatheads; 48-52 61\" (1000cc) E; EL Panhead (NU)\u003c\/p\u003e\n\u003ch2\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Hastings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e MOTOR PARTS \u0026gt; PISTON RINGS\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnit:\u003c\/strong\u003e 1CY\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct code:\u003c\/strong\u003e 946470\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePart Numbers\u003c\/h2\u003e\n\u003cp\u003eMCS Part Number: 946470\u003cbr\u003eManufacturer Part Number: 6627000\u003c\/p\u003e","brand":"Hastings","offers":[{"title":"Default Title","offer_id":57378719891843,"sku":"MCS946470","price":28.17,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1329\/4265\/files\/908440k.jpg?v=1785973336","url":"https:\/\/hogparts.co.uk\/products\/mcs946470","provider":"Hogparts UK Ltd","version":"1.0","type":"link"}