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Helping keep British Motorcycles on the road for over 30 years - established 1977

Oil Cooler Automatic Bypass Valve

Part Number 641-11

See also 641-12, Manual Bypass Valve.

The Jagg Automatic By-Pass Valve acts as an automatic thermostat, allowing you to by-pass the oil cooling system for cold-weather riding or for faster warm-ups on cool days.

Durable anodized billet aluminum construction. Compact in-line installation. Installation note: If the oil hoses between the oil cooler and the oil source are too short, the oil cooler by-pass valve may not fit in the oil lines.

Jagg mini by-pass valves require at least 3 inches of straight hose. The Jagg Automatic By-Pass is supplied complete with all necessary hardware and easy-to-follow installation instructions.

Rebuild Kit, 641-11/A Also Available

Service kit to replace thermostatic element assembly in Jagg Automatic By-pass Valve. Assembly includes:

Thermostatic actuator
Sealing cap (anodized black to match by-pass valve)