Thermex Header Kit

Header Kits for Thermex Heat Exchangers cooled by fresh water or salt water

The headers (or end caps) can be easily removed from your Thermex Oil Cooler. This enables easy servicing and makes the parts easy to replace. The table below includes part numbers for our standard 3-pass oil coolers. If you are unsure of which header kit you need for your cooler please contact us.

Header Kits - Thermex Shell and Tube Heat Exchanger


Model / Series

Header Kit - Cast Iron

(Standard Connection)

Header Kit - Cast Iron

(Large Connection)

Header Kit - Gunmetal

(Standard Connection)

Header Kit - Gunmetal 

(Large Connection)

2300 750021 (1/2")  750022 (3/4")  770021 (1/2")  770022 (3/4")
2500 750121 (1") 750122 (1.5") 770121 (1") 770122 (1.5")
2700 750721 (2") n/a 770721 (2") n/a
2800 750821 (2.5") n/a 770821 (2.5") n/a


If you are in any doubt at all about whether these are the correct parts for your cooler, please contact our sales team for advice. 




Contact Us


+44 (0)1527 62210



Thermex Ltd

Merse Road

North Moons Moat

Redditch, Worcestershire

B98 9HL, U.K.

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