1. Motorcycle Intake & Fuel Systems Deals
  2. sku: 23892994502213741
  3. GOODNEWSTOREUSA 550718504197

GOODNEWSTOREUSA Flange Carb Adarpter Manifold Boot Mikuni 550718504197 45MM

fits model: Hsr45. make: Harley.

Goodnewstoreusa 550718504197 45mm Flange Carb Adarpter Manifold Boot For Mikuni Hsr45 Harley

( Brand: Goodnewstoreusa ), ( Part Type: Flange Manifold Boot ), ( Color: Black ), ( Material: Rubber ), ( Package Included: 1 Flange Carb Adapter ), ( Style: 45mm Hsr Carb ), ( UPC: 550718504197 )

Review GOODNEWSTOREUSA 45mm Flange Carb Adarpter Manifold Boot Mikuni Harley fits HSR45

The **GoodNewStore USA 550718504197 45mm Flange Carb Adapter Manifold Boot** is a meticulously crafted aftermarket component designed to seamlessly integrate with the Mikuni HSR45 carburetor on Harley-Davidson engines, particularly those equipped with the iconic Twin Cam or Evolution-style cylinder heads. Engineered for both performance enthusiasts and custom shop builders, this high-quality adapter serves as a versatile bridge between the carburetor s intake port and the engine s manifold, ensuring a secure, leak-free connection while maintaining optimal airflow. Constructed from durable, heat-resistant materials, the 45mm flange adapter is precision-machined to match the exact dimensions of the Mikuni HSR45 s intake flange, eliminating the need for excessive modification or gasket adjustments. Its robust design includes a reinforced manifold boot that not only enhances structural integrity but also minimizes vibration and flexing under high-performance conditions, reducing the risk of premature wear or failure. Whether you're tuning for increased horsepower, restoring stock performance, or customizing your Harley with a fresh intake setup, this adapter is a reliable choice that prioritizes both functionality and longevity. Compatible with a wide range of intake manifolds and air filters, it offers the flexibility to pair with aftermarket components like high-flow air cleaners or custom intake pipes, making it an essential addition for riders seeking a refined yet high-performance air intake solution. Built to withstand the demands of daily riding and spirited cruising, this adapter ensures a clean, unrestricted flow of air to the carburetor, helping to maximize throttle response and engine efficiency.

### **Pros and Cons of buying a GoodnewstoreUSA 550718504197 45mm Flange Carb Adapter/Manifold Boot for Mikuni HSR45 (Harley-Davidson)**

#### **Pros:**

1. **Compatibility** This part is specifically designed for the Mikuni HSR45 carburetor, which is commonly used on Harley-Davidson engines (particularly in the Evolution and Sportster platforms). The 45mm flange ensures a proper fit with the intake manifold or throttle body.

2. **Improved Airflow** A well-fitted manifold boot or adapter helps maintain smooth airflow into the carburetor, reducing vacuum leaks and improving throttle response. This can lead to better engine performance, especially if the original boot was damaged or loose.

3. **Durability** The part appears to be made from high-quality rubber or silicone, which should resist cracking, hardening, or degrading over time, especially if exposed to heat and oil. This extends the lifespan of the component compared to cheap aftermarket alternatives.

4. **Easy Installation** Since it s a direct replacement, installation should be straightforward for someone with basic mechanical skills. No major modifications to the intake system are typically required.

5. **Cost-Effective Fix** If the original boot is cracked or leaking, replacing just this part is far cheaper than overhauling the entire intake system or replacing the carburetor.

6. **OEM-Quality Alternative** While not an exact OEM part, it appears to be a reputable aftermarket solution that mimics OEM specifications, reducing the risk of performance issues.

7. **Widely Available** As an aftermarket part, it should be easy to source, and GoodnewstoreUSA seems to be a trusted supplier for Harley-Davidson performance and intake components.

---

#### **Cons:**

1. **Potential Fitment Issues** While designed for the HSR45, slight variations in intake manifold designs (especially on older or modified Harleys) could cause fitment problems. Double-checking with your specific engine configuration is crucial.

2. **Quality Variability** Some aftermarket parts, even from reputable sellers, may have inconsistent quality. If the material is too soft or too hard, it could degrade quickly or fail to seal properly.

3. **No Warranty or Return Policy (Check Terms)** Always verify the seller s return and warranty policies before purchasing. Some aftermarket suppliers have limited or no return policies, which could be risky if the part doesn t fit or fails.

4. **May Not Improve Performance Significantly** If the carburetor itself is worn or the intake system has other issues (e.g., vacuum leaks elsewhere), replacing just the boot won t drastically improve power. It s more of a maintenance or leak-sealing solution.

5. **Potential for Counterfeit Parts** Buying from lesser-known or untrusted suppliers increases the risk of receiving a knockoff or low-quality replica. GoodnewstoreUSA appears legitimate, but always cross-reference with reviews or forums.

6. **Limited Customization** This is a standard adapter; if you need a custom length or angle for your specific setup, you may need to modify it or source a different part.

7. **Installation Knowledge Required** While simple, improper installation (e.g., over-tightening, misalignment) could damage the carburetor or intake manifold. If unsure, consulting a mechanic is advisable.

---

### **Conclusion**

The **GoodnewstoreUSA 550718504197 45mm Flange Carb Adapter/Manifold Boot for Mikuni HSR45 (Harley)** is a **practical and cost-effective solution** for addressing leaks, cracks, or wear in the intake boot of a Harley-Davidson with an HSR45 carburetor. It offers **improved airflow, durability, and ease of installation**, making it a solid choice for maintenance or minor performance upgrades.

However, **potential fitment issues, quality concerns, and the need for careful installation** mean it s not a "set-and-forget" high-performance part. It s best suited for **routine maintenance or as a direct replacement** rather than a performance-enhancing modification.

If your primary goal is **fixing a leak or restoring OEM-like function**, this part is a **reliable and affordable option**. If you re looking for **significant power gains**, you may need to pair it with other upgrades (e.g., carb tuning, intake manifold modifications).

---

### **Recommendation**

- **Buy if:**

- You need a **direct replacement** for a damaged or leaking intake boot.

- Your Harley has an **HSR45 carburetor** (verify compatibility with your specific model).

- You want a **cost-effective, high-quality aftermarket solution** from a reputable seller.

- You re comfortable with **basic installation** or have access to a mechanic.

- **Avoid if:**

- You suspect **other intake system issues** (e.g., vacuum leaks, worn throttle body) that aren t being addressed.

- You re looking for **performance gains** beyond leak repair (consider a full intake system upgrade instead).

- You re unsure about **fitment** on a modified or rare Harley configuration.

- **Additional Steps Before Purchase:**

- **Check your exact carburetor and intake manifold model** to confirm compatibility.

- **Review customer feedback** on the seller s platform (if available) for real-world experiences.

- **Consider buying from a local Harley dealer** if you want OEM-quality parts with warranty support.

- **Inspect the part upon arrival** for defects or incorrect sizing before installation.

**Final Verdict:** A **good, practical choice for maintenance**, but not a high-performance upgrade. If the part fits and seals properly, it should extend the life of your carburetor and improve reliability.

Details:

Style: 45mm HSR carb. Sold as: Each. Color: Black. Clamp included.

Package included. Material: Rubber. Adapts spigot sleeve mount carbs to flange-mount manifolds. 45mm Flange Carb Adarpter Manifold Boot For Mikuni HSR45 CARB Harley.

Condition: 100% Brand New. FLANGE CARB ADAPTER FOR Mikuni HSR45 Harley.

specifications intakefuelmotorcycle:

  • for models: Hsr45
  • for makes: Harley
  • brand: Goodnewstoreusa
  • part type: Flange Manifold Boot
  • color: Black
  • material: Rubber
  • package included: 1 Flange Carb Adapter
  • style: 45mm Hsr Carb
  • upc: 550718504197

offer intakefuelmotorcycle:

  • availability: In Stock
  • options: Ship-to-home
  • sold: 0
  • quantity: 3
  • started: May 15, 2026
  • best offers: True

payments intakefuelmotorcycle:

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

seller intakefuelmotorcycle:

  • # reviews: 675
  • city: Rancho Cucamonga, California
  • rating: 99.6%

general intakefuelmotorcycle:

  • condition: New
  • Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Other Air Intake Fuel Delivery

returns intakefuelmotorcycle:

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

shipping intakefuelmotorcycle:

  • service: Standard
  • transit: 5-12 Days
  • class: Standard
  • cost: $0.00
  • type: Fixed
for models: hsr45, for makes: harley, part type: flange manifold boot, package included: 1 flange carb adapter, style: 45mm hsr carb,
category: motorcycle parts > motorcycle scooter parts accessories > air intake fuel delivery, color: black, material: rubber, sku: 23892994502213741,
Goodnewstoreusa 550718504197 Is Similar To:

Copyright © intakefuelmotorcycle.com