Northern Lights Heat Exchanger / Expansion Tank Assembly for Marine Diesel Generator - Used

Northern Lights heat exchanger / expansion tank assembly, pulled from a marine diesel generator set. Cast header tank with pressure-cap filler neck and original Northern Lights decals, mated to a cylindrical shell-and-tube heat exchanger with bronze raw-water elbows and a four-bolt flanged port. Application: Northern Lights / Lugger marine diesel generator sets — the exact genset model has not been verified, as no legible model or serial plate remains on this unit. May fit a range of Northern Lights sets; buyer must confirm. Condition: Used, untested take-off. Complete in appearance with heavy paint loss, surface rust, and verdigris on the bronze fittings. No pressure, flow, or leak test has been performed — recommended for pressure testing and tube-bundle service, or use as a rebuildable core. Drained and ports capped before shipping. Buyer must confirm fitment by part number, photos, dimensions, engine model, serial number, and application before purchase. Used marine part sold as-is unless otherwise stated. No returns on electrical, used, special-order, or installed parts.