1. Electrical Components ATV Parts For Sale
  2. sku: 24622077850311723
  3. BRONCO PRODUCTS AU-09008I

BRONCO PRODUCTS AU-09008I Intake Valve

fits model: Trx350d, Fourtrax. make: Honda. year: 1987-89.

Au-09008i Bronco Products Oe Intake Valve For Honda Trx350d Fourtrax 1987-89

( Brand: Bronco Products ), ( Manufacturer Part Number: AU-09008I ), ( Part Type: Intake Valve ), ( Country Of Origin: Us ), ( Vendor: Lionparts Powersports ), ( Image Note: Image Is For Reference Only, Actual Product May Vary Slightly. ), ( Ships From: Usa ), ( Handling Time: Approximately 1 Business Day ), ( Oem Or Performance: Performance/aftermarket )

Review BRONCO PRODUCTS Oe Intake Valve Honda 1987 89 fits FOURTRAX TRX350D 1987-89

The **Bronco AU-09008I Intake Valve** is a precision-engineered aftermarket component designed specifically for the **Honda TRX350D FourTrax (1987 1989)** models, offering a direct upgrade to stock performance while maintaining reliability and durability. Crafted from high-grade **forged aluminum**, this intake valve is meticulously machined to exacting tolerances, ensuring a seamless fit within the engine s cylinder head without compromising the original sealing integrity. Unlike generic or aftermarket alternatives, the Bronco AU-09008I is engineered to replicate the aerodynamic efficiency of OEM valves while incorporating subtle refinements that enhance airflow dynamics, promoting better combustion and improved throttle response. Its **optimized valve contour** reduces turbulence and friction, allowing for smoother valve operation and extended component life, particularly in high-RPM or demanding off-road conditions where stock valves may experience premature wear. The valve s **precision-ground seat** ensures a consistent seal, preventing leaks that could degrade engine efficiency or contribute to carbon buildup over time. Ideal for enthusiasts seeking a straightforward yet effective performance boost, this valve is a drop-in replacement that requires no modifications to the engine or exhaust system, making installation a straightforward task for even intermediate mechanics. Whether used as part of a broader engine tune-up or as a standalone upgrade to revitalize a tired TRX350D s power delivery, the Bronco AU-09008I delivers measurable gains in horsepower and torque while upholding the rugged integrity of Honda s legendary four-wheeler. Built to withstand the rigors of off-road use, this valve is a testament to Bronco s commitment to quality, offering a balance of performance enhancement and long-term reliability for the discerning rider.

### Pros and Cons of buying a Bronco AU-09008I Intake Valve for a 1987-89 Honda TRX350D FourTrax

#### **Pros:**

1. **Improved Airflow** The Bronco intake valve is designed to enhance airflow into the engine, which can lead to better throttle response and slightly improved power output, especially in off-road conditions where stock air filters may restrict performance.

2. **Durability** Bronco parts are generally built to withstand rugged use, making this intake valve a reliable choice for off-road applications where debris and harsh conditions are common.

3. **Easy Installation** The Bronco intake valve is designed to be a direct replacement for the stock Honda part, meaning it should fit without major modifications. Installation typically requires minimal tools and time.

4. **Cost-Effective Upgrade** Compared to full engine modifications or aftermarket intake systems, this valve offers a relatively inexpensive way to improve breathing without significant labor costs.

5. **Compatibility** The Bronco AU-09008I is specifically designed for the 1987-89 TRX350D, ensuring a proper fit without the need for adapters or additional parts.

6. **Maintenance-Friendly** Since it s a single component, cleaning or replacing it is straightforward compared to more complex aftermarket intake systems.

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#### **Cons:**

1. **Limited Performance Gain** While it may improve airflow, the gains in horsepower and torque are modest. For serious power upgrades, a full air filter swap, carburetor tuning, or exhaust modification would be more effective.

2. **No Direct Throttle Body or Intake Manifold Upgrade** This valve alone does not address restrictions in the throttle body or intake manifold, which can still limit performance if they are worn or clogged.

3. **Potential for Clogging** If not cleaned regularly, the intake valve (like any air intake component) can accumulate dirt, oil, or debris, negating some of its benefits. This requires periodic maintenance.

4. **Stock Carburetor Limitations** The TRX350D s stock carburetor (likely a Keihin or similar) may not fully utilize the improved airflow from the Bronco valve without adjustments (e.g., jetting changes). This could lead to rough idling or poor low-end performance if not addressed.

5. **No Cold Air Intake Benefits** Unlike a full cold air intake system, this valve does not route cooler air from outside the engine bay, meaning temperature-related performance gains are minimal.

6. **Brand Reliability Concerns** While Bronco is a reputable brand for off-road parts, some users report inconsistent quality in certain components. Researching reviews or checking for return policies before purchasing is advisable.

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### **Conclusion:**

The Bronco AU-09008I intake valve is a **practical and affordable upgrade** for a 1987-89 Honda TRX350D, offering modest airflow improvements with minimal hassle. It s a good choice if you want a simple, no-frills way to enhance breathing without major modifications. However, it s not a game-changer for performance expect noticeable but not dramatic gains.

If your primary goal is **off-road reliability and basic performance tweaks**, this valve is a solid pick. If you re aiming for **significant power increases**, pairing it with a high-flow air filter, carburetor tuning, or a full intake system would yield better results.

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### **Recommendation:**

- **Buy it if:** You want a quick, easy, and budget-friendly way to improve airflow with minimal effort. It s also a good choice if you ve already addressed other potential bottlenecks (e.g., clean carburetor, high-flow air filter).

- **Skip it if:** You re looking for substantial power gains or plan to do further modifications (e.g., exhaust, carburetor rebuild). In that case, focus on more impactful upgrades first.

- **Pair it with:** A high-quality off-road air filter (e.g., K&N or Arrow) and regular cleaning to maximize its effectiveness. Consider jetting adjustments if you notice rich-running or poor throttle response.

For most casual riders, the Bronco intake valve is a **worthwhile upgrade** just manage expectations regarding performance improvements. Always verify compatibility and condition (e.g., check for cracks or wear) before purchasing.

Details:

Photos may be for reference and actual appearance vary slightly. Built for quality meets or exceeds OEM standards. Please verify fitment using the MPN and part details. SUH3 steel construction for intake valves.

Menu Bronco OE Intake Valve AU-09008I for Honda TRX350D FourTrax 1987 -89: AU-09008I: Replace your worn intake valve with an OE-style aftermarket designed to match OEM performance standards. Untitled Document. Sold individually single unit. Key Features: OEM replacement intake valve.

part #: au09008i prices

  • $10.99-$15.35

specifications electricacompone:

  • for models: Trx350d, Fourtrax
  • for makes: Honda
  • for years: 1987-89
  • brand: Bronco Products
  • mpn: Au-09008i
  • part type: Intake Valve
  • country of origin: Us
  • vendor: Lionparts Powersports
  • image note: Image Is For Reference Only, Actual Product May Vary Slightly.
  • ships from: Usa
  • handling time: Approximately 1 Business Day
  • oem or performance: Performance/aftermarket

general electricacompone:

  • ATV, Side-by-Side UTV Parts Accessories > Electrical Ignition Components > Other Electrical Ignition Components
  • condition: New

returns electricacompone:

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

shipping electricacompone:

  • service: Expedited, Expedited with Adult Signature required
  • type: Fixed
  • cost: $0.00
  • transit: 4-8 Days
  • class: Expedited

payments electricacompone:

  • other
  • wallet: Apple-pay
  • credit card: Diners-club

seller electricacompone:

  • # reviews: 50791
  • city: Midvale, Utah
  • rating: 99.4%

offer electricacompone:

  • availability: In Stock
  • sold: 0
  • started: April 19, 2026
  • options: Ship-to-home
  • quantity: 1
for models: trx350d, fourtrax, for makes: honda, for years: 1987-89, part type: intake valve, country of origin: us, vendor: lionparts powersports, image note: image is for reference only, actual product may vary slightly., ships from: usa, handling time: approximately 1 business day, oem or performance: performance/aftermarket,
category: atv parts > atv, side-by-side utv parts accessories > electrical ignition components, sku: 24622077850311723,
Bronco Products AU-09008I Is Similar To:
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5 offers $10.99–$15.35 USD
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  • New. Offer #2 priced at $10.99 + $10.49 shipping estimate = $21.48* total. The price was great Designed by Z-Dzine.+$10.49 shipping
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  • New. Offer #4 priced at $28.07 + $0.00 shipping estimate = $28.07* total. All valves are manufactured under ISO 9001 certified factory Up for sale is BRONCO INTAKE VALVE .FREE SHIPPING
  • New. Offer #5 priced at $19.03 + $0.00 shipping estimate = $19.03* total. FREE SHIPPING

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