Replacement Bowman rubber moulded end cap, designed for marine heat exchanger manifolds. You should find that your current Bowman end caps have their part number embossed on them to easily identify the replacement you need. This is Bowman part number 2679NP, which is a 90 degree outlet end cap.

This heat exchanger end cap is suitable to be used with the following Bowman heat exchangers: BL180, BL250, BL380, BL570, FM160, FM162, FM180, FM240, FM242, FM660, LR250, MB180, MB220, MB300, MB380, MB570, MK130, MK140, ML130, MS130, MS140, PE180, PE250 and VW150.