{"product_id":"oem-harley-shovelhead-rear-cylinder-jug-16587-66-3-49-in-bore-approx-050","title":"OEM Harley Shovelhead Rear Cylinder Jug 16587-66 – 3.49 in Bore \/ Approx. +.050","description":"\u003cp\u003eGenuine Harley-Davidson Shovelhead rear cylinder jug with casting number 16587-66 and an approximately 3.49-inch measured bore. This should be considered a machine-shop core until checked for taper and wear.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003ePart Number \/ Markings:\u003c\/strong\u003e 16587-66\u003cbr\u003e\u003cstrong\u003eCondition:\u003c\/strong\u003e Used – machine-shop inspection recommended\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eUSED PARTS DISCLAIMER:\u003c\/strong\u003e This is a used motorcycle part and may show normal signs of age, installation, removal, storage, and previous use including scratches, scuffs, discoloration, surface corrosion, paint loss, or other cosmetic wear. Any known damage or defects are noted when known. Unless otherwise stated, the photos show the actual item being sold and are considered part of the description.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eBORE \/ IDENTIFICATION:\u003c\/strong\u003e Measured 3.49 in. A 74ci Shovelhead starts at 3.4375 in; a nominal +.050 bore is about 3.4875 in. This measurement is therefore consistent with approximately +.050 oversize.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFITMENT NOTES:\u003c\/strong\u003e The measurement is consistent with a 74ci cylinder at approximately .050 over standard. Because 3.49 inches is also close to the nominal 80ci Shovelhead bore, use the casting, cylinder dimensions, base spigot, and professional bore measurements to confirm the final engine combination.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFITMENT:\u003c\/strong\u003e Buyer is responsible for verifying fitment before purchasing. Fitment information is provided as a reference based on available part numbers, casting marks, measured dimensions, donor information, and published references. Motorcycles may have been modified over time. Compare the part number, casting, mounting points, bore, dimensions, electrical connections, and photos with the part currently on your motorcycle.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQUESTIONS?\u003c\/strong\u003e Send us a message before purchasing if you need additional measurements, photos, condition details, or clarification on what is included.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSHIPPING:\u003c\/strong\u003e Orders are typically processed and shipped within 1–2 business days after payment. Tracking is provided once the order ships. Parts are packed according to size, weight, and type. Large, heavy, or oversized items may require additional handling or shipping arrangements.\u003c\/p\u003e","brand":"Harley Davidson","offers":[{"title":"Default Title","offer_id":47504190472276,"sku":null,"price":52.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0700\/0122\/9908\/files\/IMG_0903.heic?v=1786793518","url":"https:\/\/skywaycyclesupply.com\/products\/oem-harley-shovelhead-rear-cylinder-jug-16587-66-3-49-in-bore-approx-050","provider":"Skyway Cycle Supply","version":"1.0","type":"link"}