• Re-Designed and Improved Rectifier. This unit has a higher output capacity:

• 7% more efficient than the stock unit
• 5 inch leads
• 6 & 12 volt charging systems
• Rated at 42 amps
• This rectifier replaces all 3 and 4 wire rectifiers without a built-in voltage regulator. 3-wire rectifiers will need a ground wire added.
• Should outlast OEM parts by several times under normal operation
• Capable of taking a voltage spike 5 times greater than your bike can make without damage.

This rectifier will do a better job than OEM rectifiers at fully charging batteries while running bikes with lights on.

1960 BSA Thunderbolt 250 441 500 650 750 Rectifier

1961 BSA Thunderbolt 250 441 500 650 750 Rectifier

1962 BSA Thunderbolt 250 441 500 650 750 Rectifier

1963 BSA Thunderbolt 250 441 500 650 750 Rectifier

1964 BSA Thunderbolt 250 441 500 650 750 Rectifier

1965 BSA Thunderbolt 250 441 500 650 750 Rectifier

1966 BSA Thunderbolt 250 441 500 650 750 Rectifier

1967 BSA Thunderbolt 250 441 500 650 750 Rectifier

1968 BSA Thunderbolt 250 441 500 650 750 Rectifier

1969 BSA Thunderbolt 250 441 500 650 750 Rectifier

1970 BSA Thunderbolt 250 441 500 650 750 Rectifier

1971 BSA Thunderbolt 250 441 500 650 750 Rectifier

1972 BSA Thunderbolt 250 441 500 650 750 Rectifier

1973 BSA Thunderbolt 250 441 500 650 750 Rectifier

1974 BSA Thunderbolt 250 441 500 650 750 Rectifier

1975 BSA Thunderbolt 250 441 500 650 750 Rectifier

1976 BSA Thunderbolt 250 441 500 650 750 Rectifier

1977 BSA Thunderbolt 250 441 500 650 750 Rectifier

1978 BSA Thunderbolt 250 441 500 650 750 Rectifier

1979 BSA Thunderbolt 250 441 500 650 750 Rectifier

This part is made to replace these old rectifiers listed below: