{"product_id":"wilwood-270-12281","title":"Wilwood Front Mopar Hat-Mount Conversion Hub, Confirm Spindle Application","description":"\u003cp\u003eWilwood describes this hat-mount hub as a B-Body drum-spindle part on its product page but as an A-Body disc-spindle part in the dimensional guide. The M\/N dimensions also differ, so confirm both the application and geometry. Wilwood Engineering’s work covers the design and manufacture of disc brake systems for motorsport, street-performance and specialized applications. Bill Wood founded the company in 1977 in a business now based in Camarillo, California. Its calipers, master cylinders, brake rotors, brake lines, valves and fittings must be selected around the complete system.\u003c\/p\u003e\u003ch3\u003eTechnical Details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e 270-12281\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConflicting published dimensions:\u003c\/strong\u003e Dim D: product page 2.330 inch, DS719 2.331 inch; Dim M: product page 3.710 inch, DS719 2.02 inch; Dim N: product page 2.020 inch, DS719 3.71 inch. Confirm the supplied hub and reference faces before using either value.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e One hub; the compatible rotor, rotor adapter or hat and its attachment hardware are selected for the complete conversion\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHat retention:\u003c\/strong\u003e Three 1\/4-20 holes; Wilwood lists bolt kit 230-7032\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHub closure and races:\u003c\/strong\u003e Manufacturer describes included bearing races and screw-on aluminum cap; confirm the supplied assembly and obtain the compatible bearings separately\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComponent:\u003c\/strong\u003e Hub - Hat Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePosition in the specified assembly:\u003c\/strong\u003e Front\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Bare\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel mounting pattern(s):\u003c\/strong\u003e 5 x 4.50, 5 x 4.75 inches; separate from rotor or drive-flange attachment\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWheel-stud thread:\u003c\/strong\u003e 1\/2-20\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRotor mounting arrangement:\u003c\/strong\u003e Hat\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct-page drawing references (inches):\u003c\/strong\u003e D = 2.330; H = 1.925; M = 3.710; N = 2.020; P = 3.010; Q = 0.250. Use the manufacturer drawing for the reference faces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer bearing \/ race references:\u003c\/strong\u003e Inner Bearing: 370-0879; Outer Bearing: 370-0877; Inner Hub Bearing - Race: 370-0878; Outer Hub Bearing - Race: 370-0876. References identify compatible service parts and do not mean all bearings are included.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFitment \u0026amp; Compatibility\u003c\/h3\u003e\u003cp\u003eCheck wheel-flange position against the spindle and rotor mounting faces. Hubs for the same vehicle can use different offsets or bearing combinations and should not be substituted on model name alone. Product page identifies a 1962–1972 B-Body drum spindle; DS719 labels the same hub as 1973–1976 A-Body disc and lists a different inner bearing\/race arrangement. Confirm the exact spindle application with Wilwood.\u003c\/p\u003e\u003cp\u003e\u003ca href=\"https:\/\/www.wilwood.com\/Hubs\/HubProd?itemno=270-12281\"\u003eWilwood component specifications\u003c\/a\u003e · \u003ca href=\"https:\/\/www.wilwood.com\/PDF\/DataSheets\/ds719.pdf\"\u003eManufacturer reference DS719\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eOur team at PMB Performance has over 20 years of parts and fitment experience. The existing component number and brake-system details help us check the match.\u003c\/p\u003e","brand":"Wilwood","offers":[{"title":"Default Title","offer_id":67731116753074,"sku":"270-12281","price":173.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0521\/8792\/2610\/files\/Big_Brake-xl_baafeb14-50b5-4a32-8623-87cd8c7ea306.jpg?v=1792184339","url":"https:\/\/pmbperformance.com\/products\/wilwood-270-12281","provider":"PMB Performance","version":"1.0","type":"link"}