Mercruiser V8 Models 330, 340 & 454 Magnum
Inboard & sterndrive units: Center riser direct replacement
| Part Number | Description |
|---|---|
| MC-1-89011 | Direct replacement water cooled exhaust manifold. Replaces MerCruiser part number 89011A8. |
| MC-20-44354 | Direct replacement water cooled center discharge riser. Replaces MerCruiser part number B-44354A3. Accepts 4" I.D. exhaust hose (8-degree angle). |
| MC-20-98502 | Direct replacement water cooled center discharge riser. Replaces MerCruiser part number 98502A2. Accepts 3" I.D. exhaust hose (0-degree angle). |
| MC-20-98504 | Direct replacement water cooled center discharge riser. Replaces MerCruiser part number 98504A3. Accepts 3" I.D. exhaust hose (15-degree angle). |
| MC-20-44354P | Mounting package for MC-20-44354 riser. |
| MC-20-87918 | Direct replacement stainless steel block off plate for use with MerCruiser riser numbers 98502, 98504 and 44354. Requires two (2) gaskets—part number MC47-27-41813. |
| MC-20-93320A3 | Manifold to riser 3" spacer blocks (pair) with fastener and gasket package. |
| MC-20-93322A3 | Manifold to riser 6" spacer blocks (pair) with fastener and gasket package. |
| MC-20-98504P | Mounting package for MC-20-98504 riser (includes gaskets, drain plug, pipe plug, stainless steel restrictor plate and fasteners). |
| MC-20-99208 | Direct replacement stainless steel restrictor plate for use with MerCruiser riser numbers 98502, 98504 and 44354. Requires two (2) gaskets—part number MC47-27-41813. |
| MC-27-47487 | Alternator bracket. |
| MC-29-47442 | Upper thermostat housing. |
| MC-29-90736 | Lower thermostat housing. |
| MC47-27-41811 | Direct replacement restrictor gasket. Replaces MerCruiser part number 27-41811. To be used with MC-20-87918 (two (2) required per plate used). |
| MC47-27-41813 | Direct replacement restrictor gasket. Replaces MerCruiser part number 27-41813. |
| MC47-27-46820 | Direct replacement exhaust manifold to head gasket. |
| MC47-27-87105 | Direct replacement exhaust elbow gasket. Replaces MerCruiser part number 27-87105. |
| MC-50-87238 | Exhaust manifold drain cock. |
| MC-50-806926 | Replacement 3/4" N.P.T. X 1" hose fitting (90-degree) brass drain cock. |
The center riser is a two-piece aluminum manifold/riser ideally suited for replacement use where riser protection is required. The Barr center riser aluminum manifold/riser uses flexible exhaust hose which facilitates connection to existing exhaust lines.
All elbows (cast iron) can swivel inboard or outboard for perfect fit. The Barr center riser aluminum manifold/riser is designed to limit back presure on the engine, resulting in more efficient engine performance. The manifold and riser can be reversed and will fit either side of the engine.
The Barr center riser aluminum manifold/riser is cast of 356 T6 aluminum, well suited for fresh water marine applications. Barr Marine's center riser aluminum manifold/riser come with a one year warranty. However, Barr Marine By EDM does not recommend use of this product in salt water applications and does not warrant this product in salt water due to extreme corrosion.