HONDA 16166-ZW4-000 Carburetor Nozzle

( Manufacturer Part Number: 16166-ZW4-000 ), ( Part Type: Carburetor Nozzle ), ( Country Of Origin: Japan )

Review HONDA Carburetor Main Nozzle

The **Honda 16166-ZW4-000 Carburetor Nozzle** is a precision-engineered component designed exclusively for Honda s high-performance carbureted engines, particularly those found in classic and modern motorcycles, ATVs, and small engines. This nozzle serves as a critical part of the carburetor s fuel delivery system, regulating the precise flow of fuel into the combustion chamber to ensure optimal engine performance, smooth operation, and efficient power output. Crafted from high-quality materials, including durable brass or stainless steel, the nozzle is engineered to withstand the demands of high-speed operation while maintaining consistent fuel metering under varying engine loads. Its unique design features a finely calibrated orifice that balances air-fuel ratios, allowing for better throttle response, reduced fuel waste, and minimized carbon buildup key factors in preserving engine longevity and performance. Whether used in a vintage Honda CB750, a reliable GX series generator, or a rugged Z400 engine, this nozzle is a direct-fit replacement part that adheres to Honda s stringent engineering standards, ensuring compatibility without the need for modifications. For enthusiasts and mechanics alike, this component is indispensable for restoring or maintaining the peak efficiency of carbureted Honda powerplants, offering a reliable solution for those seeking to fine-tune their engines for optimal speed, reliability, and fuel economy.

### **Pros and Cons of buying a Honda 16166-ZW4-000 Carburetor Nozzle**

1. **Direct Fitment** This nozzle is designed specifically for Honda engines, particularly those using the ZW4 carburetor system (common in older Honda dirt bikes, ATVs, and some generators). It ensures compatibility without modification, reducing the risk of installation errors.

2. **Performance Optimization** A properly functioning carburetor nozzle helps maintain the correct fuel-air mixture, improving engine performance, throttle response, and fuel efficiency. If your engine is running poorly due to a clogged or worn nozzle, replacing it can restore power and smooth operation.

3. **Cost-Effective Replacement** Compared to rebuilding or replacing the entire carburetor, this nozzle is a relatively inexpensive part. It s often cheaper than buying a full carburetor kit or paying for professional tuning.

4. **Easy Installation** Replacing a carburetor nozzle typically requires minimal tools (often just a screwdriver or pliers) and can be done in under an hour by a DIYer. No special skills or equipment are usually needed.

5. **Prevents Long-Term Damage** A failing nozzle can lead to rich or lean fuel mixtures, which can damage engine components over time (e.g., fouling spark plugs, clogging jets, or causing carbon buildup). Replacing it proactively can extend the life of your engine.

6. **Availability and Reliability** Honda parts are widely available through dealerships, online retailers (e.g., Amazon, RockAuto, eBay), and specialty motorcycle/ATV shops. The part is manufactured to Honda s specifications, ensuring reliability.

7. **Improved Emissions and Runability** A clean or new nozzle helps maintain proper emissions levels (if applicable) and prevents stalling or rough idling caused by fuel delivery issues.

---

1. **Potential Counterfeit Parts** Some third-party sellers may offer knockoff or low-quality nozzles that don t meet Honda s standards. This can lead to premature failure, poor performance, or even damage to the carburetor. Always buy from reputable sources (e.g., Honda dealerships, authorized distributors, or well-reviewed online retailers).

2. **Incorrect Part Number Misapplication** While this nozzle is for the ZW4 carburetor, there are variations (e.g., different sizes or models) depending on the engine s displacement or application. Double-checking the part number against your specific model is critical to avoid purchasing the wrong nozzle.

3. **Carburetor Cleaning May Still Be Needed** Replacing the nozzle alone won t fix issues like gummed-up jets, dirty passages, or worn seals. If your carburetor is heavily fouled, you may need to clean or rebuild it alongside the nozzle replacement for optimal results.

4. **Limited Longevity in Harsh Conditions** If your engine runs on low-quality fuel, operates in dusty environments, or is frequently subjected to extreme temperatures, the nozzle may wear out faster than expected. Regular maintenance (e.g., fuel system cleaning) can help mitigate this.

5. **Skill Dependency for DIYers** While simple, improper handling during installation (e.g., cross-threading, damaging O-rings) can lead to leaks or performance issues. Those unfamiliar with carburetor work may benefit from watching a tutorial or consulting a mechanic.

6. **Price Variability** Prices can fluctuate based on the seller, demand, or authenticity. While generally affordable, some counterfeit or "new old stock" (NOS) parts may be sold at inflated prices.

7. **Not a Permanent Fix for Underlying Issues** If your engine has other problems (e.g., vacuum leaks, worn piston rings, or incorrect carburetor settings), replacing the nozzle won t resolve those issues. A full carburetor tune-up or engine inspection may be necessary.

---

The **Honda 16166-ZW4-000 carburetor nozzle** is a practical and cost-effective solution for restoring proper fuel delivery to a ZW4-equipped engine. It offers clear benefits in terms of performance, ease of installation, and preventative maintenance. However, potential drawbacks such as counterfeit parts, incorrect part selection, or the need for additional carburetor maintenance must be carefully considered.

**For most users, this part is a straightforward and worthwhile purchase**, especially if the nozzle is the primary cause of engine issues. To maximize success:

- Verify the part number matches your engine/model.

- Purchase from a trusted source to avoid counterfeits.

- Clean or rebuild the carburetor if other components are fouled.

- Follow installation guidelines carefully.

If you re unsure about the condition of your carburetor or engine, consulting a mechanic before purchasing may save time and money in the long run.

---

- You ve confirmed it s the correct part for your engine.

- You re experiencing symptoms like rough idling, poor throttle response, or fuel starvation.

- You re comfortable with basic carburetor maintenance or have access to guidance.

- You suspect other carburetor components (e.g., jets, diaphragms) are failing.

- You re buying from an unverified seller with no return policy.

- Your engine has persistent issues after replacement (indicating a deeper problem).

**Best Practice:** Pair the nozzle replacement with a carburetor cleaning or rebuild for long-term reliability. If DIY feels risky, consult a professional.

Details:

The Honda Carburetor Main Nozzle 16166-ZW4-000 is a specific replacement part designed for outboard engines. As a genuine Honda part, it is engineered to meet the highest standards of quality and durability, making reliable choice for maintaining your boats engine. This main nozzle controls the fuel flow to engine, ensuring optimal performance and efficiency.

part #: 16166zw4000 prices

• $20.00-$50.71

specifications ouboaen:

• for makes: Honda
• mpn: 16166-zw4-000
• part type: Carburetor Nozzle
• country of origin: Japan

seller ouboaen:

• # reviews: 3969
• rating: 100.0%
• city: Ocala, Florida

shipping ouboaen:

• type: Calculated
• cost: $6.92
• service: USPS Ground Advantage
• class: Standard
• carrier: USPS
• transit: 3-8 Days

returns ouboaen:

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

general ouboaen:

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

offer ouboaen:

• started: May 26, 2026
• sold: 0
• options: Ship-to-home
• quantity: 2
• availability: In Stock
• best offers: True

payments ouboaen:

Honda 16166-ZW4-000 Is Similar To:

• 16100 Zv1-f22 Honda 16100-zv1-f22 Carburetor (51.2% similar) ...(July 20th, 2017)
• 16101-zw2-a23 Honda Carburetor Assy (44.2% similar) ...(July 12th, 2018)
• 16102-zv5-010 16101-zv5-010 Honda Carburetor And (40% similar) Came off a 1997 honda 45HP motor,were just ran on bottom and middle carb from running motor, both have been cleaned but do need bowl gaskets, first 4 pics are of carb,next 5 carb,sold individually...(May 10th, 2018)
• Bf40 Honda Bf50 Outboard Freshwater Carburetor (40.9% similar) The carbs have been sitting for a few months but were working fine when removed. Up for sale is a set of good used carburetors removed from honda BF40 outboard, serial number bays...(February 11th, 2017)
• 16100-zv4-d22 Newmotoparts Fit Honda Series Outboard Boat Motor Engines Carb Carburetor (26.4% similar) For many BF15 series outboard boat engines. 1 x carburetor. Condition: 100% new. New condition...(February 25th, 2022)
• Honda Outboard Carburetor Gasket 16010-zv4-005 Bin92 (44.7% similar) New condition...(August 5th, 2022)
• Honda 16102-zw1-l41 Carburetor Bf 90 Pn 16101-zw1-l41 Years 2000 01 02 Bf90 4 Stroke (45.7% similar) Don't let a faulty carburetor ruin your day. It is compatible with a variety of different honda BF90 model's. This is for 1 carburetor I multiple available. This is a used carburetor from honda bf 90 4 stroke, as with any older it should be thoroughly cleaned and rebuild for reliability on the water...(October 4th, 2024)
• Honda 16101-zw4-d23 Carburetor Assy 16100-zw4-d23za 1997-03 50hp (54.7% similar) Good: item does show some wear however minimal. Notes: carbs will need to be cleaned prior use...(October 6th, 2024)
• Honda 17201-921-030 B75 Outboard Carburetor And Air Guide 1975-77 (50.5% similar) Clean used honda B75 7.5 hp carburetor, air guide, and oem bolts...(November 8th, 2024)
• Honda 16100-zw3-d23za Carburetor Assy 1997-03 40hp 40 Hp Carb Carbs (47.7% similar) This is a complete carb set. They are in good used condition but it would be recommended that they cleaned prior to install...(November 14th, 2024)
• Honda 16100-935-004 7.5hp 2cyl Outboard Carburetor 1971-1977 (49% similar) Message me if you're not sure for confirmation it fits your model number. Came off model number B75-200348. Honda 7.5HP 2CYL outboard carburetor used motor was running great when I removed it but would clean out. Fits model's B75KILD, B75, B75KI serial numbers 2000 15 thru 9999999...(November 27th, 2024)