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Upgrade your GM-powered boat with the ATK VMW4 4.3L marine engine featuring 230 HP, marine pistons, and roller valvetrain durability.
Out of stock
The ATK Engines VMW4 is a remanufactured Chevrolet 4.3L/262 cubic inch marine long block developed for 2001-2004 GM marine applications. Rated at 230 horsepower, this engine uses marine-specific pistons, rings, camshaft, and gaskets to withstand continuous marine load conditions. Cast iron construction and roller rocker hardware help maintain durability during extended operation. || This long block is configured for GM marine systems using Block #090M and Head #113 castings along with 5/16 x 18 detonation sensor threads and provisions for a crankshaft position sensor. The VMW4 includes marine intake and exhaust valves plus updated bearings designed to improve longevity compared to standard automotive rebuilds. || ATK packages the engine in recyclable protective shipping containers and includes installation gasket components and oil pump hardware where applicable. The VMW4 is ideal for replacing aging 4.3L marine engines in recreational fishing boats, cruisers, and sterndrive-equipped vessels needing OE-style compatibility and marine-specific engineering.
| Brand | ATK Engines |
|---|---|
| Model | VMW4 |
| MPN | VMW4 |
| Product Type | Marine Long Block |
| Material | Cast iron |
| Finish Color | Cast Gray |
| Dimensions | 36 x 38 x 36 in |
| Weight (lb) | 360 lb |
| Load Capacity | Not Published |
| Drawer Count | Not Published |
| Drawer Type | Not Published |
| Lock Type | Not Published |
| Mount Type | Engine Mount |
| Installation | Direct replacement |
| Compatibility | 2001-2004 Chevrolet 4.3L |
| Use Case | Marine Repower |
| Warranty | Not Published |
| Country of Origin | Not Published |
| Series | Marine Engine |
| UPC | 653517287893 |
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