Sierra 18-1845 exhaust riser for MerCruiser V6 and V8 marine gas engines with dry-joint style exhaust (2004 and newer). Replaces
14 degree down-angle risers (does not replace 7 degree versions). This riser will fit either side of the engine and accepts all original mounting brackets. Does not include gasket. Please view gasket options here. Each purchase is for one riser.
This part is new and high-quality cast iron construction. To determine if this is the correct replacement for you, look on your current part for casting numbers and match them to the cross reference below:
| Cross Reference | Part Number |
|---|---|
| Barr Marine | MC-20-864591 |
| GLM Products | 51147 |
| HGE | 4591 |
| MerCruiser Stern Drive | 864591T02 |
About Sierra
Sierra provides premium-quality aftermarket replacements for over 6,000 marine parts, tools, and components. Sierra products are engineered to meet or exceed OEM standards, and stand up in harsh marine environments. Every new Sierra part comes with a limited lifetime warranty that covers the useful life of the product against any defects in workmanship and materials.
