GOLFPARTSTORE GPS903760 Jet Carb Kit 38 40

( Brand: Golfpartstore ), ( Manufacturer Part Number: GPS903760 ), ( Warranty: 90 Day ), ( Type: Carb Primer Kit ), ( Feature: Escp )

Review GOLFPARTSTORE 38 40 Jet Carb Primer Kit Kawasaki 1997 2006 Stx r fits STX 900 1200 2002–2005

The **GolfPartStore GPS903760 38/40 Jet Carb Kit** is a meticulously engineered performance upgrade designed specifically for Kawasaki s high-performance outboard motors, including the **STX 900 (1997 2006)** and **STX-R 1200 (2002 2005)**. This precision carburetor kit replaces the stock jets with high-flow, aftermarket components that enhance throttle response, fuel efficiency, and overall engine performance, making it an ideal choice for anglers, racers, and enthusiasts seeking a noticeable boost in power and reliability. The kit features **38/40 main jets**, which are optimized to deliver a richer, more balanced fuel-air mixture, reducing hesitation and improving acceleration especially under load. Crafted from durable, corrosion-resistant materials, these jets are designed to withstand the demanding conditions of saltwater and frequent use, ensuring longevity and consistent performance even in harsh environments. Whether you re trolling at low speeds or revving the engine for a burst of speed, this carb kit fine-tunes the fuel delivery system to maximize horsepower while maintaining smooth operation. Installation is straightforward, requiring only basic tools, and the kit includes all necessary components including gaskets, O-rings, and precise jet sizes to ensure a seamless fit. For Kawasaki outboard owners looking to elevate their motor s performance without extensive modifications, the **GPS903760 38/40 Jet Carb Kit** is a cost-effective yet high-impact solution that delivers measurable results in speed, fuel economy, and overall engine efficiency.

### **Pros and Cons of buying a GolfPartStore GPS903760 38/40 Jet Carb Kit for Kawasaki STX 900 (1997-2006) & STX-R 1200 (2002-2005)**

1. **Performance Improvement** The 38/40 jet kit is designed to optimize fuel delivery, potentially increasing horsepower and throttle response, especially if the stock jets are underperforming or clogged.

2. **Compatibility** This kit is specifically engineered for the Kawasaki STX 900 and STX-R 1200 models, ensuring a proper fit without major modifications.

3. **Cost-Effective Tuning** Compared to full engine rebuilds or high-end aftermarket carb kits, this is a relatively affordable way to improve performance.

4. **Easy Installation** Since it s a direct replacement for the stock jets, installation is straightforward for those with basic mechanical skills or a mechanic s help.

5. **Potential for Better Fuel Efficiency** If the original jets were causing rich mixtures, the correct sizing (38/40) may improve fuel economy in some cases.

6. **Availability & Support** GolfPartStore is a reputable supplier with good customer service, and the part is readily available online.

1. **Limited Performance Gain** Unlike high-performance carb kits or fuel injection conversions, this is a modest upgrade. Expect noticeable but not dramatic improvements.

2. **Requires Proper Tuning** Simply swapping jets without adjusting the carb s idle mixture or throttle response may lead to rough idling, stalling, or poor low-end power.

3. **Depends on Carb Condition** If the stock carburetor is dirty, worn, or leaking, replacing just the jets won t fully restore performance. A full carb overhaul may be needed.

4. **Potential for Rich or Lean Mixtures** Incorrect tuning after jet changes can cause engine damage if the fuel-air ratio is off. A scan tool or professional help is recommended.

5. **No Warranty on Installation Issues** The kit itself may have a warranty, but installation problems (e.g., improper gasket sealing) are the buyer s responsibility.

6. **May Not Suit High-Performance Mods** If the bike has other modifications (e.g., exhaust, camshafts, or headers), the 38/40 jets might still be too conservative for optimal performance.

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### **Conclusion & Recommendation**

The **GolfPartStore GPS903760 38/40 jet carb kit** is a **solid, budget-friendly option** for Kawasaki STX 900 and STX-R 1200 owners looking to refresh their carburetion without a major overhaul. It s best suited for:

- **Stock or lightly modified bikes** needing a simple performance boost.

- **Owners comfortable with basic carb adjustments** (or willing to pay for professional tuning).

- **Those experiencing minor power loss** due to worn or clogged stock jets.

**However**, if you plan to push the bike harder with other mods (e.g., exhaust, camshafts, or fuel injection), you may need a more aggressive jet kit or a full carb tune-up. **Always pair this upgrade with a fuel system inspection and proper carb tuning** to avoid engine issues.

- **Buy it if:** You want a cost-effective, easy-to-install carb upgrade for a modest power increase and are prepared to tune the carb afterward.

- **Avoid it if:** You expect dramatic performance gains, the bike has significant other mods, or you lack experience with carburetor adjustments.

- **Best Practice:** Combine this with a **carb cleaning, gasket replacement, and professional tuning** (or use a scan tool for DIY tuning) to ensure optimal results.

For the best outcome, consider consulting a **Kawasaki specialist or carburetor tuner** before installation to confirm the correct jet size for your specific riding conditions.

Details:

For KAWASAKI. STX 900 1997 -2006. STX1100 1997 -1999. ZXI1100 1996 -2003.

ZXI 900 1995 - 1997. Service to the heart, quality gold. Looking forward to your every purchase.

part #: gps903760 prices

• $14.43-$14.89

specifications jetskiintakeez:

• for models: Stx, 900, 1200
• for makes: Kawasaki
• for years: 2002-2005
• brand: Golfpartstore
• mpn: Gps903760
• warranty: 90 Day
• type: Carb Primer Kit
• feature: Escp

offer jetskiintakeez:

• availability: In Stock
• started: March 20, 2026
• options: Ship-to-home
• best offers: True
• sold: 0

general jetskiintakeez:

• Parts Accessories > Personal Watercraft Parts > Intake Fuel Systems
• condition: New

returns jetskiintakeez:

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

seller jetskiintakeez:

• rating: 99.5%
• city: Monroe Township, New Jersey
• # reviews: 11228

shipping jetskiintakeez:

• cost: $0.00
• class: Standard, Expedited
• transit: 5-8 Days
• type: Fixed
• service: Standard, Expedited

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