MERCURY KA-2AT Carburetor Tillotson Outboard Carb Rebuildable

( Manufacturer Part Number: KA-2AT ), ( Part Type: Carburetor )

Review MERCURY Ka2at Ka-2a Carburetor Tillotson Ka2a Outboard Carb Rebuildable

The **Mercury KA-2AT (KA2AT, KA-2A) Tillotson KA2A Carburetor** is a meticulously engineered, high-performance marine carburetor designed exclusively for Mercury outboard engines, offering unmatched reliability and precision for both recreational and competitive boating applications. Built to withstand the demanding conditions of saltwater and freshwater environments, this **rebuildable** carburetor is a critical component in maintaining optimal fuel delivery, throttle response, and overall engine performance across a range of Mercury outboards, including models from the classic KA-2A series through to later iterations of the KA-2AT lineup. Crafted with durable materials and precision machining, the KA2A carburetor features a robust **Tillotson design**, renowned for its simplicity, efficiency, and ease of maintenance, ensuring that boaters can restore it to factory specifications with minimal effort. Its **separate float bowl** design allows for quick and efficient cleaning, reducing the risk of clogs and fuel starvation that can plague less robust carburetors. The **needle-and-seat assembly** is finely tuned for optimal fuel metering, providing smooth acceleration and consistent power delivery, whether cruising at low speeds or revving under heavy load. For those seeking a deeper dive into performance, the KA2A carburetor accommodates aftermarket upgrades, such as performance jets and throttle bodies, allowing enthusiasts to fine-tune their engine s output for increased horsepower and torque without sacrificing reliability. Whether you're restoring a vintage Mercury outboard or maintaining a modern classic, this carburetor stands as a testament to Mercury s legacy of innovation, offering a blend of heritage engineering and modern rebuildability that ensures it remains a cornerstone of marine performance for decades to come.

### **Pros and Cons of Buying a Rebuildable Mercury Ka-2AT/Ka2AT/Ka-2A/Tillotson Ka-2A Outboard Carburetor**

1. **Cost-Effective Long-Term Solution** Rebuildable carburetors save money compared to buying new ones repeatedly. A single rebuild kit can restore the carb to near-new condition for a fraction of the cost of a replacement.

2. **Performance Restoration** If the carburetor is worn or clogged, rebuilding it can significantly improve engine performance, fuel efficiency, and throttle response, especially in older outboards.

3. **Customization Options** Rebuilding allows for adjustments such as jet sizing, float level calibration, and throttle response tuning to match specific engine needs or fuel conditions.

4. **Compatibility with Vintage Engines** Many older Mercury outboards (especially pre-1980s models) use Ka-2A/Tillotson carburetors, making a rebuildable unit a practical choice for restoration projects.

5. **Eco-Friendly Alternative** Rebuilding reduces waste by extending the life of an existing part rather than contributing to electronic or mechanical disposal.

6. **Access to Aftermarket Parts** Since these carburetors are still produced (or easily sourced), rebuild kits, gaskets, and replacement parts are widely available.

7. **Skill Development** Rebuilding a carburetor is a valuable mechanical skill, useful for DIY enthusiasts and small engine technicians.

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1. **Time-Consuming Process** Rebuilding requires disassembly, cleaning, inspection, and reassembly, which can take several hours, especially for beginners.

2. **Skill Dependency** Proper rebuilding demands knowledge of carburetor mechanics, fuel system tuning, and troubleshooting. Poor assembly can lead to poor performance or damage.

3. **Potential for Further Damage** If the carburetor has internal corrosion, warped components, or severe wear (e.g., a cracked body or seized throttle valve), rebuilding may not be sufficient, and replacement might still be necessary.

4. **Fuel System Compatibility Issues** Modern fuels (especially ethanol blends) can degrade rubber components in older carburetors. A rebuild may not fully address compatibility, requiring additional modifications.

5. **Limited Availability of Original Parts** While rebuild kits exist, some OEM components (e.g., specific jets or seals) may be hard to find, forcing reliance on aftermarket alternatives.

6. **Warranty Concerns** If the carburetor is part of a warranty-covered engine, rebuilding it may void the warranty, making it less ideal for newer or still-warrantied outboards.

7. **Upfront Cost of Kits** While cheaper than a new carburetor, rebuild kits (including jets, gaskets, and solvents) can still add up, especially if multiple attempts are needed.

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### **Conclusion**

Rebuildable Mercury Ka-2AT/Ka2AT/Ka-2A/Tillotson Ka-2A carburetors are a **practical and economical choice** for owners of older outboards who are willing to invest time and effort. They offer **performance improvements, customization, and sustainability**, making them ideal for DIY enthusiasts and those restoring classic engines. However, they require **mechanical skill, patience, and an understanding of fuel system tuning** poor execution can lead to wasted time or further engine issues.

For **new or warranty-covered outboards**, a rebuildable carburetor may not be the best option due to warranty risks. In such cases, purchasing a **new or remanufactured carburetor** might be simpler. For **vintage or heavily used engines**, rebuilding is often the most cost-effective solution.

### **Recommendation**

- You own an older Mercury outboard (pre-1980s) and are comfortable with mechanical work.

- You want to restore performance without replacing the entire carburetor.

- You have access to rebuild kits and are willing to learn the process.

- Your outboard is under warranty or relatively new.

- You lack the time, tools, or confidence to rebuild it properly.

- The carburetor shows severe internal damage (e.g., cracked body, seized components).

For best results, **supplement the rebuild with a professional inspection** if unsure about the carburetor s condition. Additionally, **upgrading to modern ethanol-compatible parts** (if available) can extend the carburetor s lifespan further.

Details:

This is ready for a rebuild and sold AS-IS.

part #: ka2at prices

• $32.95-$100.00

specifications ouboaen:

• for makes: Mercury
• mpn: Ka-2at
• part type: Carburetor

seller ouboaen:

• # reviews: 370
• rating: 100.0%
• city: Saint Elmo, Illinois

returns ouboaen:

• policy: Returns Accepted
• time: 30 Days
• paid by: Buyer

offer ouboaen:

• options: Ship-to-home
• availability: In Stock
• started: April 20, 2026
• quantity: 1
• sold: 0

general ouboaen:

• condition: Used
• Boat Parts > Outboard Engines Components > Other

payments ouboaen:

• credit card: Discover
• wallet: Paypal
• other

shipping ouboaen:

• service: Standard
• transit: 3-9 Days
• cost: $0.00
• type: Fixed
• class: Standard

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