Product Information
Manufacturer: GLM Products, Inc.
Regular Price: $240.50
Sale Price: $180.99
Mercury Part Number: 807988A2
OSCO Part Number: 4354

Product Description
In GLM's Mercruiser replacement 4 inch riser, there are two
additional water jackets. This allows a higher volume of water
to flow through the riser, keeping the engine cooler.

*All risers are powdercoated black for maximum corrosion protection*

**Cast Iron risers come with a 3 year warranty**

Exploded Views
See this product in context on these categories:
Boat Motor Parts / Mercruiser Boat Parts / Mercruiser Exhaust Manifolds / Mercruiser 4.3L V6 Exhaust Manifolds / V-6 - 229/262 CID - 1983-Up
Boat Motor Parts / Mercruiser Boat Parts / Mercruiser Exhaust Manifolds / Mercruiser V8 Small Block Exhaust Manifolds / V-8 305/350/377 CID 1983-Up
Boat Motor Parts / Mercruiser Boat Parts / Mercruiser Exhaust Manifolds / Mercruiser Gm Big Block V8 Exhaust Manifolds / Mercruiser V8 325hp to 600hp 427/454/502 1981-Up Exhaust Manifolds

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