Regular price
$35.00 AUD
Regular price
Sale price
$35.00 AUD
Sale
Sold out
Couldn't load pickup availability
Refresh
🔧 Product Description
Genuine MerCruiser 3.7L Front Water Inlet Cover - Part Number: 71904A1
A genuine MerCruiser water-inlet and front water-pump impeller cover for selected 3.7-litre / 224 CID inline-four engines.
The cover closes the water-inlet section of the engine front cover and directs raw cooling water into the engine-mounted water pump.
⚙️ Key Features
Genuine MerCruiser cooling-system cover
Correct current part number 71904A1
Supersedes original cover 71904
Fits the MerCruiser 3.7L inline-four engine family
Mounts to the engine front-cover water inlet
🚤 Compatibility
Commonly used on
MerCruiser 3.7L engine-mounted raw-water pump assemblies
Typically suits
Engine models:
MerCruiser 470 2-barrel
MerCruiser 470 MIE
MerCruiser 485
MerCruiser 488 / 488R
MerCruiser 165 3.7L
MerCruiser 170 3.7L
MerCruiser 180 3.7L
MerCruiser 190 3.7L
MerCruiser 3.7L and 3.7LX
HP Range: Approximately 165HP - 190HP
Engine Type: MerCruiser 224 CID / 3.7L inline-four petrol engine
Year Range: Approximately 1976-1989
🔌 Function
The cover forms part of the engine-mounted raw-water pump inlet. It seals the impeller chamber and directs incoming cooling water through the engine cooling system.
⚠️ Common Signs of Failure
Cooling water leaks from the front cover
Cover is corroded or pitted internally
Gasket surface is warped
Pump loses prime or delivers reduced water flow
Mounting screws or threads are damaged
🔄 Supersession & Cross Reference
OEM Supersession Chain
71904A1 → Supersedes 71904
71904 earlier water-inlet cover reference
OEM / Related Numbers
71904A1
71904
745061173507
Related front-cover water-pump impeller
Related cover gasket and attaching hardware
Aftermarket / Verified Equivalents
Specialist used or remanufactured 71904A1 cover
No aftermarket equivalent
📦 Condition
Genuine used part
Removed from running engine where applicable
In good working condition unless otherwise stated
View full details
