{"product_id":"pac-racing-springs-pac-s103-16-chromoly-valve-spring-retainers-1-550-inch-od-0-770-inch-spring-id-set-of-16","title":"PAC Racing Springs PAC-S103-16 Chromoly Valve Spring Retainers, 1.550-Inch OD, 0.770-Inch Spring ID, Set of 16","description":"Steel C\/M Spring Seats - 1.550 x .770 x .575\n\u003cp\u003eUpgrade your valve train with PAC Racing Springs PAC-S103-16 chromoly valve spring retainers, engineered for dependable performance in demanding high-performance and racing applications. These inside-style spring seats provide a precise interface between the valve spring and cylinder head while helping maintain consistent spring positioning during operation. The set includes 16 retainers for a complete V8 valve train installation.\u003cbr\u003eEach retainer is manufactured from durable chromoly steel to provide strength and resistance to wear under high spring loads and elevated engine speeds. The 0.060-inch-thick design features a 1.550-inch outside diameter, a 0.575-inch inside diameter, and a 0.770-inch spring inside diameter. These specifications make the PAC-S103-16 a practical choice for compatible cylinder heads and valve spring combinations requiring reliable inside spring retainers.\u003cbr\u003eDesigned for professional engine builders, performance enthusiasts, and racing applications, PAC Racing Springs retainers support accurate valve train assembly and long-term durability. Verify spring seat, valve, and retainer compatibility before installation to ensure the correct fit and safe operating clearance. The PAC-S103-16 set combines proven chromoly construction with application-specific sizing for consistent valve train performance.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBrand: PAC Racing Springs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart Number: PAC-S103-16\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eProduct Type: Inside valve spring retainer\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eMaterial: Chromoly steel\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eRetainer Thickness: 0.060 inch\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eOutside Diameter: 1.550 inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eInside Diameter: 0.575 inch\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSpring Inside Diameter: 0.770 inch\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuantity: Set of 16\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication: High-performance and racing valve trains\u003c\/li\u003e\u003c\/ul\u003e","brand":"PAC RACING SPRINGS","offers":[{"title":"Default Title","offer_id":67646333550844,"sku":"PACPAC-S103-16","price":86.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0763\/8797\/5420\/files\/PACPAC-S103-16.jpg?v=1791156315","url":"https:\/\/ozkonickustomz.com\/products\/pac-racing-springs-pac-s103-16-chromoly-valve-spring-retainers-1-550-inch-od-0-770-inch-spring-id-set-of-16","provider":"Ozkonic Kustomz LLC","version":"1.0","type":"link"}