74643 MERCRUISER HEAT EXCHANGER | LE: 74643 HEAT EXCHANGER | MERCRUISER GM SMALL BLOCK, FRONT-MOUNT74643 Heat Exchanger. Mercruiser 74643A2 GM (Chevy) 5. 0 Liter and 5. 7 Liter Small Block Mercruiser Inboard Engines with LOG STYLE (End Exhaust) Manifolds, engines up to 1982 with log style exhaust manifolds. Front mounted over engine circulating water pump, cools engine block and manifolds. Made with pride by Lenco, in Long Island, NY. Call us with any questions at (631) 842 4049

GM Big Block Heat Exchanger

Mercruiser 864395T01  864395

NA004180 Perkins dual cooler

35135 CN Westerbeke Heat Exchanger

Used on the following engines:  C GAS PLUS CM556

Universal M-30 / 5424 COOLING SYSTEM GROUP

NA001314 Perkins Dual Cooler

and 91036A8

For Models 6BT 210HP

Used on the following engines:

Crusader 97930

ONAN MDKC etc