£44.99 inc. tax

Isuzu Thermostat and Housing Gasket

Isuzu engine genuine parts thermostat and gasket - new and boxed

There are two options available:

A) This fits the 38 / 42hp (4LC1) and 48 / 55hp (4LE1) marine engines. This will fit Isuzu industrial engines - 4LC1 and 4LE1 - that require a 54mm thermostat

B) This fits the 33 / 35hp (4LB1) marine engine. This will fit Isuzu industrial engines - 4LB1 - that require a 44mm thermostat

NOTE: Do not use a generic or pattern part in your Isuzu engine. There are plenty of examples around of incorrect thermostats causing overheating, mainly because they are incorrectly sized and do not have the correct bypass set up, and are usually the wrong temperature operation. This is particularly apparent in marine installs when incorrect thermostats are fitted. Bear in mind that to change a head gasket (correctly) will cost in the region of £350 plus labour of around £300.... why risk getting it wrong for a £40 thermostat....

Cost of a replacement cylinder head is around £750, plus parts and labour. Not using the correct stat could be a £1400 mistake, basically....
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