3866719 CN CUMMINS HEAT EXCHANGER | LE: 3866719CN | 6BT, 6BTA, CUPRO NICKELLE 3866719 CN replacement Cummins Heat Exchanger. Made with pride in the USA by LENCO. Cupro nickel for a longer lasting more durable unit, superior to standard copper made units. The Cupro nickel tube bundle is brazed to the baffles and headers for a more durable commercial grade unit. Replaces older Cummins part numbers 3914642, 3866719, 4019958. Replaces Sen Dure 9778 1 7. Call us at (631) 842 4049 Also available in an economy copper version.

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