MERCURY WH1-1 Carb Set Choke Plate 150/175 WH-1-1 2/1 3-1 V6

( Manufacturer Part Number: WH1-1 ), ( Part Type: Hp Plate ), ( Country Of Origin: United States )

Review MERCURY 150/175 Hp Carb Set And Choke Plate 2-1 3-1 V6 fits MARINER 1979–1986

The **Mercury WH1-1 Mariner V6 Carburetor Choke Plate Assembly (1979 1986, 150/175 HP)** is a meticulously crafted, high-performance component designed to deliver optimal fuel-air mixture control for Mercury s legendary Mariner outboard engines, spanning the iconic 150 and 175 horsepower models produced between 1979 and 1986. This precision-engineered assembly features a **WH1-1 choke plate**, a critical element in the carburetor s throttle body that regulates airflow during startup and low-speed operation, ensuring smooth acceleration and reliable cold-weather performance. The choke plate operates in tandem with the **2-1 and 3-1 carburetor configurations**, allowing for seamless transitions between idle, part-throttle, and wide-open throttle conditions, which is essential for maintaining peak power delivery and fuel efficiency across varying engine loads. Crafted from durable, corrosion-resistant materials, this assembly is built to withstand the demands of marine environments, including exposure to saltwater, humidity, and temperature fluctuations, while maintaining structural integrity and performance consistency over time. Whether restoring a classic Mariner or upgrading an existing setup, this choke plate assembly ensures a precise fit with the engine s intake manifold, promoting better throttle response, reduced emissions, and enhanced engine longevity. Ideal for enthusiasts and mechanics seeking authenticity and reliability, this part embodies the engineering excellence that defined Mercury s Mariner line during its golden era, offering a direct replacement that restores factory specifications with minimal deviation.

### Pros and Cons of Buying a Mercury WH1-1 Mariner V6 (1979 1986, 150/175 HP, Carbureted, Choke Plate)

1. **Classic Boat Engine Reliability** Mercury s WH1-1 series (especially the carbureted models) is known for durability, particularly in saltwater applications. Many of these engines were built to last with proper maintenance, making them a solid choice for older boats.

2. **Lower Cost of Ownership** Compared to modern outboards, parts for these engines are relatively inexpensive, and labor costs for repairs are often lower. The simplicity of carbureted systems also means fewer high-tech components to fail.

3. **Good for Cruising and Fishing** The 150 175 HP range is well-suited for mid-sized cruisers, fishing boats, and smaller powerboats. The torque of the V6 provides steady power for sustained cruising, which is ideal for day trips or weekend use.

4. **Saltwater Tolerance** Mercury s older marine engines were designed with saltwater resistance in mind, and many were built to handle prolonged exposure without excessive corrosion (though rust can still be an issue if not properly maintained).

5. **Nostalgia and Collectibility** For enthusiasts, these engines have a cult following. Some buyers appreciate the vintage aesthetic, and well-preserved examples can hold value among collectors.

6. **Ease of Modifications** Carbureted engines allow for easier tuning and modifications compared to modern fuel-injected models. Swapping in a performance carburetor or adjusting the choke plate can improve performance.

7. **Proven Performance** The WH1-1 was a popular choice in its time, and many owners report that with regular maintenance, these engines can run reliably for decades. The choke plate system (a precursor to modern throttle bodies) was a robust design for its era.

8. **Lower Fuel Consumption** Compared to modern high-performance outboards, these engines are more fuel-efficient for their power output, which can be beneficial for long trips.

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1. **Age and Wear** Engines from this era are approaching 40 years old, meaning parts like gaskets, seals, and bearings may be worn out. A thorough inspection is essential before purchase.

2. **Maintenance Requirements** Carbureted engines require more frequent maintenance than modern fuel-injected models. Carburetors need cleaning, tuning, and occasional overhauls. Ignition systems (points or early distributors) can also be finicky.

3. **Emissions and Modern Regulations** Older carbureted engines do not meet modern emissions standards, which could be an issue if you plan to use the boat in areas with strict environmental laws. Some states require smog checks or restrict older engines.

4. **Fuel System Issues** Carburetors are prone to clogging, vapor lock, and poor performance in varying temperatures. Modern fuel additives and stabilizers are often necessary to keep them running smoothly.

5. **Limited Availability of Parts** While parts exist, some components (especially for older models) may be harder to find than for newer engines. Mercury still supports these models, but stocking can be inconsistent.

6. **Potential for Rust and Corrosion** Even with saltwater tolerance, prolonged exposure to moisture can lead to rust in the lower unit, cylinder heads, and other metal parts. A thorough inspection of the lower unit and bilge is critical.

7. **Performance Limitations** Compared to modern outboards, these engines lack the power, efficiency, and refinement of today s fuel-injected models. They may struggle with heavy loads or high-speed cruising.

8. **Resale Value** While some collectors value these engines, the general market for used marine engines favors newer, more efficient models. Resale value may not be as strong as for a modern outboard.

9. **Noise and Vibration** Older V6 engines can be louder and vibrate more than modern designs, which may be noticeable in smaller boats or during extended use.

10. **Electrical System Challenges** Older ignition systems (points, distributors) and wiring can be unreliable. Modern electronics (like GPS or fish finders) may not be as compatible with the boat s electrical setup.

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The Mercury WH1-1 Mariner V6 (1979 1986) is a solid choice for buyers who prioritize reliability, lower operating costs, and a classic marine engine experience. It excels in cruising, fishing, and smaller powerboat applications where power isn t the primary concern. However, it requires more maintenance than modern engines, and its age means potential hidden issues like rust, worn parts, or emissions compliance problems.

- **Enthusiasts** who enjoy working on or restoring older boats.

- **Budget-conscious buyers** who can afford the time and effort for maintenance.

- **Owners of smaller boats** where 150 175 HP is adequate.

- **Those who prioritize nostalgia** over cutting-edge technology.

- Buyers who want a "plug-and-play" engine with minimal upkeep.

- Those who plan to use the boat frequently in high-traffic or environmentally regulated areas.

- People who need high performance, fuel efficiency, or modern features like electronic diagnostics.

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- **No signs of internal rust** (especially in the lower unit and cylinder heads).

- **A clean, properly adjusted carburetor** with no excessive carbon buildup.

- **Functioning ignition system** (points or distributor should be in good condition).

- **Seals and gaskets** that are intact and not leaking.

- **A service history** to confirm regular maintenance (oil changes, timing belt replacement if applicable).

If the engine checks out, it can be a **great investment** for a reliable, low-cost power source. However, be prepared for occasional maintenance and potential upgrades (e.g., converting to fuel injection if emissions laws become an issue).

For most buyers today, a **modern Mercury or Yamaha outboard** (with fuel injection and emissions compliance) may offer better long-term reliability and lower maintenance hassles. But if you love the idea of a vintage marine engine and are willing to put in the work, the WH1-1 remains a rewarding choice.

Details:

Carbs are in good shape and were rebuilt several years ago, but have been sitting on shelf surely need to be carefully cleaned repaired before they water ready. Mercury Mariner carb set pulled from a 1979 150hp v6 outboard. Carbs are WH1-1,2, and 3 oem.mounted on choke plate 67253. Linkage is broken on plastic choke rod at carb 3 but can be fixed easily with epoxy.

part #: wh11 prices

• $124.99-$325.00

specifications ouboaen:

• for models: Mariner
• for makes: Mercury
• for years: 1979-1986
• mpn: Wh1-1
• part type: Hp Plate
• country of origin: United States

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Intake Fuel Systems

seller ouboaen:

• # reviews: 306
• rating: 98.2%
• city: Wyandotte, Oklahoma

returns ouboaen:

• policy: No Returns

offer ouboaen:

• started: May 25, 2026
• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock
• best offers: True

shipping ouboaen:

• type: Calculated
• transit: 3-7 Days
• cost: $0.00
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage

payments ouboaen:

• credit card: Visa
• wallet: Apple-pay
• other

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