fits  99-17 Twin Cam (NU)

Manufactured from blue anodized 6061 aluminum. A direct upgrade replacement for the stock breather assembly. Inside you will find the proprietary Labyrinth design to significantly reduces oil pass-through, keeping your engine running cleaner and smoother while burning less oil. The S&S dual O-ring design offers a superior seal, minimizes leaks and maximizes performance. Maintenance-free since the mesh filter elements and the umbrella valves is no longer required. – 6061 aluminum construction – S&S blue anodized finish – Dual O-Ring for a improved sealing – Labyrinth design to significantly reduce oil pass-through – Less oil carry-over to the intake – Improved durability when compared to the stock breather assemblies – No nore umbrella valve and mesh filter element so maintenance-free

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Home > Parts > Engine > Lower End > Breather Valves > S&S, billet head breather kit for Twin Cam

fits  99-17 Twin Cam (NU)

Twin Cam rocker box breather rebuild kit, fits Feuling and OEM breathers. Kit includes umbrella valves, filters and gaskets.

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Home > Parts > Engine > Lower End > Breather Valves > Feuling, rocker cover breather rebuild kit. Twin Cam

fits  17-25 M8 (excl. 23-25 FLTRXSE; 24-25 FLTRXSTSE; 23-25 FLHXSE; 24-25 FLHX; 2025 FLHXU; 24-25 FLTRX)

Fits OEM 29400183 (rear), 29400210 (front), Feuling 705548 billet breathers. Kit includes umbrella valves, filters, button head bolts and O-rings. Note: Will also fit Feuling 705548 billet head breathers

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Home > Parts > Engine > Lower End > Breather Valves > Feuling, rocker cover breather rebuild kit. M8

fits  17-25 M8 models (excl. 2025 Softail; 23-25 FLTRXSE; 24-25 FLTRXSTSE; 23-25 FLHXSE; 24-25 FLHX; 2025 FLHXU; 24-25 FLTRX); 17-25 Trikes

Machined from red anodized billet 6061 aluminum with square surfaces, excellent umbrella valve sealing, longer main breather exit nipples with dual O-rings to promote better breather system sealing. Properly sized breather inlets and location for optimum engine breathing. Unique design maximizes breather volume and allows for easy serviceability. Breather bodies have multiple drain ports located on the inside floor, ports are chamfered on ID to allow easy drainage yet squared off on exits to deter filling from splash oil. Kits include: billet breather housings, billet covers, breather filter elements, umbrella valves and quality hardware. Feuling cylinder head breathers work, seal and you will find they hold an engine vacuum. Testing shown on a healthy engine will see 3-4 oz of oil in the sump and once the dipstick is removed another 3-4 oz will drain. Note: Factory plastic OEM breathers can be problematic, material easily distorts, especially after seeing excessive heat then the internal umbrella valve struggles to seal, causing oil carry over. Another issue found with the OEM breathers is cracked and or broken exit nipples which can be caused by heat distortion and or improper fit and poor installation. This can cause the oil filled air to bypass the stock breather entirely. Note: Feuling breathers work, seal and you will find they hold an engine vacuum. Testing shown on a healthy engine will see 3-4 oz of oil in the sump and once the dipstick is removed another 3-4 oz will drain. Note that this test procedure can only be performed with a sealed engine meaning no external venting via dipstick or trans top cover. Breathers can be used with external venting via dipstick, trans cover and air cleaner. .

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Home > Parts > Engine > Lower End > Breather Valves > Feuling, billet head breathers M8

fits  17-25 M8 models (excl. 2025 Softail; 23-25 FLTRXSE; 24-25 FLTRXSTSE; 23-25 FLHXSE; 24-25 FLHX; 2025 FLHXU; 24-25 FLTRX); 17-25 Trikes

Manufactured from blue anodized 6061 aluminum. A direct upgrade replacement for the stock low cost plastic 29400183 front and 29400210 rear breathers inside the rocker cover. Where the stock umbrella valve can be problematic, the S&S O-ring design offers a superior seal, minimizes leaks and maximizes performance. The labyrinth design significantly reduces oil pass-through, keeping your engine running cleaner and smoother while burning less oil. – 6061 aluminum construction – S&S blue anodized finish – Dual O-Ring for a improved sealing – Labyrinth design to significantly reduce oil pass-through – Less oil burn – Improved durability when compared to stock plastic – Will not fit 23-up Gen2 M8 engines

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Home > Parts > Engine > Lower End > Breather Valves > S&S, billet head breather kit for M8

fits  99-10 Twin Cam (NU)

2 used. OEM replacement reference 11270.

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Home > Parts > Engine > Lower End > Breather Valves > Athena, o-ring breather baffle

fits  2015 XG750/500 Street (NU)

Foamet replacement gasket. Foamet gasket material has an aluminum base with a nitrile synthetic rubber foam layer on both sides. OEM replacement reference number 29400074. Note: 16-20 models do not require a gasket.

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Home > Parts > Engine > Lower End > Breather Valves > James, gaskets breather baffle. Foamet

fits  L87-22 XL Sportster; 08-12 XR1200 (NU)

Steel ball. One used behind oil filter adapter.

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Home > Parts > Engine > Lower End > Breather Valves > Check ball, oil filter breather Sportster

fits  03-10 Dyna, FLT/Touring with OEM cases; 99-17 style S&S T-series (Twin Cam style) cases (NU)

Reed style breather to fit S&S oil pump as used in all S&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&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: 970628 Seal. 970629 O-ring (for 99-02 FLT, Dyna). 970630 O-ring (for 03-06 FLT; 03-05 Dyna). 970631 Reed valve. 970632 Reed valve stop. 970634 Reed valve screws. 970610 Wave spring (for 99-06 FLT; 99-05 Dyna with S&S pump). 970635 Wave spring (for OEM & S&S cases with stock oil pump). 970636 Wave spring (for S&S .375″ wider SA cases with stock oil pump). 970637 Wave spring adapter (for S&S .375″ wider ‘Special Application’ cases with S&S oil pump).

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Home > Parts > Engine > Lower End > Breather Valves > S&S, Twin Cam breather valve

fits  99-05 Dyna (NU)

Black cap. Dyna models have the oil tank mounted under the transmission. The engine, with two massive pistons going up and down, breathes in to the oil tank. This system is a way to vent the oil tank to help reduce pressure build-up and reduce power robbing pressures and stops dipstick blow-out. Comes as complete kit with filter, braided clear PVC covered lines and, if required, gaskets. Note: Require removal of transmission / oil tank cover.

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Home > Parts > Engine > Lower End > Breather Valves > Feuling, oil tank breather kit. Black. Dyna