fits model: 200. make: Mercury. year: 1996–1999.

( Manufacturer Part Number: WMV-5-2 ), ( Part Type: Hp Carburetor ), ( Country Of Manufacture: United States ), ( Donor Motor: Loose )
The **Mercury WMV-5-2 carburetor** from the late 1990s specifically designed for the **Mercury 450 500 HP outboard engines** produced between **1996 and 1999** represents a high-performance, precision-engineered component built to deliver **unmatched power and reliability** across a range of horsepower outputs, including **135 HP, 150 HP, 175 HP, and 200 HP** models. This **center carburetor**, a critical element in the engine s fuel delivery system, is meticulously crafted to optimize airflow and fuel mixture, ensuring **smooth acceleration, consistent throttle response, and maximum horsepower extraction** from the engine s high-performance cylinder heads. Constructed from **durable marine-grade materials**, including **anodized aluminum and high-strength plastics**, the WMV-5-2 is engineered to withstand the harshest conditions from saltwater corrosion to intense vibration while maintaining precise calibration for peak performance.
At the heart of this carburetor lies a **dual-choke design**, featuring **precision-machined throttle bodies and adjustable jets**, allowing for **fine-tuned fuel delivery** under varying load conditions. The **pneumatic and mechanical linkages** are built with **low-friction bearings and sealed actuators**, ensuring smooth operation even under heavy throttle demands. For the **175 HP and 200 HP variants**, the carburetor incorporates **enhanced airflow passages and larger venturi tubes**, which significantly improve **volumetric efficiency**, allowing these high-output engines to breathe better and produce **more torque and horsepower** without sacrificing fuel economy or reliability. The **idle and low-speed circuits** are carefully balanced to prevent **hunting, stalling, or rough running**, while the **high-speed mixture screws** can be easily adjusted to fine-tune performance for **racing, towing, or cruising applications**.
One of the standout features of the **Mercury WMV-5-2** is its **modular rebuildability**, making it an ideal choice for **restoration or upgrade projects**. The carburetor is **compatible with both stock and aftermarket components**, including **high-flow air filters, performance exhaust systems, and electronic fuel injection (EFI) conversions** (where applicable). When rebuilt, it undergoes a **rigorous cleaning, gasket replacement, and jet calibration process**, ensuring that every orifice, diaphragm, and linkage operates at **factory or better specifications**. The **sealed float bowl** prevents fuel sloshing and ensures consistent fuel levels, while the **vacuum-operated choke mechanism** provides **cold-start reliability** in even the most demanding marine environments.
Whether you're restoring a **classic Mercury 450 HP from the late '90s** or upgrading a **high-performance outboard for racing**, the **WMV-5-2 carburetor** delivers **proven performance, durability, and ease of maintenance**. Its **universal fitment** across multiple horsepower levels makes it a **versatile upgrade**, capable of transforming a stock engine into a **high-revving, torque-rich powerhouse**. With proper care including **regular cleaning, jet adjustments, and gasket replacements** this carburetor will **retain its performance characteristics for thousands of hours**, making it a **smart investment** for any serious marine enthusiast or professional mechanic.
### Pros and Cons of Buying a Mercury WMV-5-2 (1996 1999) Center-Carburetor Engine (135 200 HP)
#### **Pros**
1. **Classic V8 Power** The WMV-5-2 is a well-regarded inline-six engine known for its smooth power delivery, especially in marine applications. The center carburetor setup (common in the 1990s) was a reliable configuration for its time, offering good throttle response and torque.
2. **Proven Reliability (When Well-Maintained)** Mercury s inline-six engines from this era were built to last if properly cared for. Many still run strong today, especially in freshwater environments where corrosion is less aggressive.
3. **Modularity & Upgrade Potential** The WMV-5-2 can be tuned for higher performance (135 200 HP) with aftermarket parts like carburetor upgrades, exhaust modifications, or fuel system tweaks. Some owners have pushed these engines to 200 HP with success.
4. **Affordability** Compared to modern outboards, a rebuilt WMV-5-2 is relatively inexpensive, making it a budget-friendly option for smaller boats or classic restorations.
5. **Parts Availability** While not as widely available as newer engines, Mercury still supports these older models, and aftermarket parts (carburetors, gaskets, seals) are still accessible.
6. **Simpler Mechanics Than Modern Engines** Fewer electronic components mean fewer things can go wrong compared to fuel-injected or electronically controlled outboards.
7. **Good for Freshwater Use** If the engine has been properly winterized and maintained in freshwater, corrosion is less of an issue than in saltwater applications.
8. **Nostalgia & Classic Appeal** For boat enthusiasts who enjoy vintage engines, the WMV-5-2 has a certain charm and historical significance.
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#### **Cons**
1. **Age & Wear** Even a "rebuilt" engine from this era may still have hidden issues like worn bearings, rod bearings, or cylinder wear. A pre-purchase inspection is critical.
2. **Carburetor Reliability** Center carburetors (like the Holley or Edelbrock-style setups) are less precise than modern fuel injection. They can suffer from clogging, float issues, or inconsistent idle, especially in older models.
3. **Fuel Efficiency & Emissions** These engines are thirsty and lack modern fuel economy. They also don t meet today s emissions standards, which could be an issue if used in restricted areas.
4. **Saltwater Corrosion Risk** If the engine has seen saltwater use, internal corrosion (especially in the crankcase, cylinder heads, or exhaust manifolds) is a major concern. A thorough flush and inspection are necessary.
5. **Limited Modern Support** Mercury no longer produces replacement parts for these older engines, and some components (like timing belts or water pumps) may require special ordering.
6. **Performance Limitations** While tunable, these engines lack the high-RPM power and efficiency of modern outboards. They re not ideal for high-speed or heavy-load applications.
7. **Electrical & Ignition Issues** Older ignition systems (points or early electronic ignition) can be finicky. Modern wiring and sensors may not be as robust as today s standards.
8. **Resale Value** Unlike newer outboards, these engines have little to no resale value. They re primarily bought for nostalgia or as a budget option.
9. **Maintenance Intensity** Regular upkeep (carburetor adjustments, valve clearances, timing checks) is required to keep them running smoothly. Neglect leads to rapid deterioration.
10. **Environmental Concerns** Older carbureted engines produce more hydrocarbons and pollutants, which may not comply with current boating regulations in some areas.
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### **Ending Conclusion**
The Mercury WMV-5-2 (1996 1999) center-carburetor engine is a **great choice for budget-conscious boaters, classic boat restorations, or freshwater use** where reliability and nostalgia are priorities. It offers solid power for its size and can be upgraded for higher performance, but it requires **diligent maintenance** to avoid common issues like carburetor drift, corrosion, and mechanical wear.
**If you re buying one:**- **Prioritize a professionally rebuilt engine** with a clean bill of health.
- **Check for saltwater exposure** a full flush and inspection are mandatory.
- **Budget for regular upkeep**, including carburetor tuning and fuel system maintenance.
- **Consider modern alternatives** (like Mercury s Verado or Mercruiser) if you need reliability, fuel efficiency, and long-term support.
**Best for:** Enthusiasts, small boats, freshwater use, or those who enjoy working on classic engines.
**Avoid if:** You want a low-maintenance, high-performance, or environmentally friendly outboard.
### **Recommendation**
If you re set on this engine, **get a pre-purchase inspection** from a marine mechanic experienced with Mercury inline-sixes. If the engine is in excellent condition and you re prepared for maintenance, it can be a rewarding purchase. However, if you re looking for a hassle-free, high-performance outboard, modern alternatives are worth considering.
1996 - 1999 - 135 150 175 200 HP. Altman, IL 62411. These are used carbs.
Please be absolutely sure this is the correct one for your motor prior to purchasing. They are sold as-is. The item you are looking at is guaranteed to be described, pictured, and cross-referenced correctly. Like I said before, we cleaned them and advise a rebuild.