Description
HGE MerCruiser 3 in. Log-Style Exhaust Riser – 6351
HGE MerCruiser 3 in. Log-Style Exhaust Riser – 6351 is a fitment-specific HGE Marine Engine Products log-style exhaust riser. MerCruiser log-manifold exhaust systems; catalog mounting kit is designated HGE 6351MK. Fits HGE log-style manifold families where the original 6351-pattern riser is specified. Match the original OEM/casting number and verify engine model, serial range and cooling configuration before installation.
Features
- 3 in. log-style MerCruiser riser
- Uses open and closed riser gaskets in the HGE mounting-kit specification
- Four-stud mounting hardware
- Water-jacketed exhaust outlet
- Verify original manifold/riser casting before ordering because several early MerCruiser log systems exist
Specifications
- Manufacturer: HGE Marine Engine Products
- Manufacturer Part Number: 6351
- Store SKU: HGE-6351
- Product Type: Log-style exhaust riser
- Outlet: 3 in. / 7.62 cm
- Style: Log-style riser
Application / Fitment
MerCruiser log-manifold exhaust systems; catalog mounting kit is designated HGE 6351MK.
Interchange / Replaces
MerCruiser 76351/60426/49964 family; Sierra 18-1971 family
Fitment note: Marine engine exhaust parts can vary by engine serial number, cooling system, riser height and prior supersessions. Compare the original part/casting number and physical configuration before installation.

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