Description
SIERRA AP-1592 Molded Cooling Hose for MerCruiser 3.7L – 18-70704 is a molded marine cooling hose for the cylinder-head-to-exhaust-manifold connection on selected MerCruiser 3.7L engines.
The preformed 5-inch hose maintains the required bend and connection geometry without forcing a straight hose into the installation. Match the OE hose number and engine configuration before replacement.
Key Features
- Molded replacement for the cylinder-head-to-exhaust-manifold hose
- 5 in. (127 mm) overall length
- 1-1/4 in. (31.8 mm) inside diameter
- Fits selected MerCruiser 3.7L applications
- Preformed shape supports correct routing without kinking
Specifications
- Manufacturer Part Number: 18-70704
- Sierra Application: AP-1592
- Product Type: Molded cooling hose
- Length: 5 in. / 127 mm
- Inside Diameter: 1-1/4 in. / 31.8 mm
Interchange / Cross Reference
- MerCruiser 32-89653
- OMC 0509325
- Volvo Penta 838513
- Volvo Penta 856505
Verify the existing hose route, engine model and OE number before ordering.
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