{"product_id":"s-s-twin-cam-breather-valve","title":"S\u0026S, Twin Cam breather valve","description":"Reed style breather to fit S\u0026amp;S oil pump as used in all S\u0026amp;S T-Series (Twin Cam style) engines and OEM pump in 03-10 OEM engines. Will tackle problems with OEM engines as Oil Carry Over (blowing oil out of the breather system); a common problem for years. Usually at sustained high speeds and worse with big inch engines. This problem can still be present in OEM Twin Cam engines. S\u0026amp;S designed this aluminum crankcase breather valve containing four steel reed valves; which effectively prevents wild turbulence in the cam chest and rocker boxes. Air and oil mist can escape from the crankcase; but is not allowed to re-enter. Any oil blowing out of the crankcase breather is stopped. A slight increase in horsepower (one to two HP) and torque can be expected. The breather valve is installed over the pinion shaft; inside the pinion bearing bore; and retained between the bearing outer retaining ring and the oil pump.   Note: Will not fit TCB (Softail) models.  Replacement parts:  970628Seal.  970629O-ring (for 99-02 FLT; Dyna).  970630O-ring (for 03-06 FLT; 03-05 Dyna).  970631Reed valve.  970632Reed valve stop.  970634Reed valve screws.  970610Wave spring (for 99-06 FLT; 99-05 Dyna with S\u0026amp;S pump).  970635Wave spring (for OEM \u0026amp; S\u0026amp;S cases with stock oil pump).  970636Wave spring (for S\u0026amp;S .375\" wider SA cases with stock oil pump).  970637Wave spring adapter (for S\u0026amp;S .375\" wider ''Special Application'' cases with S\u0026amp;S oil pump).\u003cp\u003e\u003cstrong\u003eFitment:\u003c\/strong\u003e 03-10 Dyna; FLT\/Touring with OEM cases; 99-17 style S\u0026amp;S T-series (Twin Cam style) cases (NU)\u003c\/p\u003e","brand":"S\u0026S","offers":[{"title":"Default Title","offer_id":54307665576263,"sku":"970644","price":196.12,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0987\/7812\/0519\/files\/970644k.jpg?v=1784469772","url":"https:\/\/www.chopperessentials.com\/products\/s-s-twin-cam-breather-valve","provider":"Chopper Essentials Co.","version":"1.0","type":"link"}