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Mercruiser 8.1L 496 MAG Heat Exchanger 863903 3.5" x 22" Replacement

Direct replacement for the Mercruiseheat exchanger 863903 (3.5"diameter version).

Dimensions: 3.5" diameter core, 3.68" diameter (OD of complete unit) x 22" long (20" bundle).

Fits Mercury Mercruiser 8.1L Chevy 496 Engine.

Note there is also a 4" diameter version is also available: MEC 863903 4.

This is a non-OEM, aftermarket part MEC 863903 3.5.





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