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57-3930 and 57-4200 sleeves need to use the later style thrust washer (57-3931 / T3931)
Triumph 650 unit & pre-unit (6T
Save Time & Money today with this Complete Mounting Bolt & "Shakeproof" Washer Set
support plates
Measures 5/16 X 18 TPI By 4-3/8 X 24 TPI
Lucas 410 12V 45/40W Bulb (1) - 06-8019 Superblend 57-3930 and 57-4200 sleeves needLucas Is A Registered Trademark Of Lucas Industries Ltd. UK *Just Arrived!* New Production Genuine Lucas 12V 45 40 Watt Triumph & Norton 410 Bulb. For a long time this Bulb was considered "Hard To Find"! Well Not anymore! Bulb features 3 Spade Prongs with the Correct P45 Base! Authentic Lucas Box is included! Fits Triumph 750 Unit Twins (Bonneville, T140, T140E, T140D, Tiger, TR7, Etc) from 1972 1981 with the correct Headlight only. Also fits 750 &