1. Exhaust Snowmobile Parts For Sale
  2. sku: 9606103852412722
  3. SPORTS INC 4573-S678987-73

SPORTS PARTS INC 4573-S678987-73 Spi Tailpipe Sport Ski Doo GASKET-51 1/2 I.D.X64 O.D.X16 1/5

fits model: X16, Summit. make: Ski-doo. year: 2012.

4573-s678987-73 Sports Parts Inc Spi Tailpipe Gasket-51 1/2 I.d.x64 O.d.x16 1/5 H For 2012 Ski-doo Summit Sport

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4573-S678987-73 )

Review SPORTS PARTS INC Spi Tailpipe 1/2.d.x64.d.x16 1/5for Ski doo Sport fits SUMMIT X16 2012

The **2012 Ski-Doo Summit Sport 4573-S678987-73 SPI Tailpipe Gasket** is a precision-engineered aftermarket component designed specifically to ensure a secure, leak-free seal between the exhaust system and the engine housing of your Ski-Doo Summit Sport. Crafted from high-performance **SPI (Silicon Polymer Impregnated) material**, this gasket offers superior durability, heat resistance, and flexibility, making it ideal for the demanding conditions of off-road and high-performance snowmobiling. With an **inner diameter (I.D.) of 5 inches**, an **outer diameter (O.D.) of 6.4 inches**, and a **thickness of 1/5 inch**, this gasket is meticulously sized to fit snugly within the tailpipe assembly of your 2012 model, preventing exhaust gas leaks while maintaining optimal engine performance. The gasket s reinforced construction ensures it remains resilient under the intense vibrations and thermal cycling inherent to snowmobile operation, reducing the risk of premature wear or failure. Whether you're tackling rugged trails or pushing your Ski-Doo to its limits, this gasket provides a reliable, long-lasting solution that keeps your exhaust system functioning efficiently without compromising on power or safety. Perfect for both maintenance and upgrade projects, it s a must-have replacement for anyone seeking to maintain peak performance and prevent costly exhaust system damage.

### **Pros and Cons of buying a 4573-S678987-73 SPI Tailpipe Gasket (51.5" ID x 64" OD x 16/5") for a 2012 Ski-Doo Summit Sport**

#### **Pros:**

1. **OEM Fitment** This gasket is designed specifically for the 2012 Ski-Doo Summit Sport, ensuring proper alignment and sealing without modifications. Using an aftermarket part that doesn t match the exact dimensions could lead to leaks or improper installation.

2. **Durability** SPI (Sport Performance International) is a reputable manufacturer known for producing high-quality exhaust components. Their gaskets are typically made from heat-resistant materials that can withstand the high temperatures and vibrations common in snowmobile exhaust systems.

3. **Compatibility with Stock Exhaust** Since this gasket matches the dimensions of the stock tailpipe (51.5" ID, 64" OD, and 16/5" thickness), it can be used as a direct replacement if the original gasket is worn or damaged. This makes it a straightforward upgrade without requiring additional modifications to the exhaust system.

4. **Prevents Exhaust Leaks** A failing gasket can cause exhaust gases to leak into the engine bay, reducing performance and potentially causing damage over time. Replacing it with a new, properly sized gasket ensures a tight seal and maintains engine efficiency.

5. **Cost-Effective Solution** Compared to full exhaust system replacements or custom exhaust upgrades, this gasket is a relatively inexpensive part. It addresses a common wear-and-tear issue without requiring significant labor or additional purchases.

6. **Easy Installation** The gasket is designed to fit standard tools and techniques, making it accessible for DIYers or mechanics with basic snowmobile repair experience. No specialized equipment is typically required.

7. **Maintains Factory Performance** Unlike aftermarket exhaust systems that may alter the sound or flow characteristics of the engine, this gasket maintains the stock performance of the Ski-Doo while fixing a potential leak point.

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#### **Cons:**

1. **Limited Performance Gain** This gasket is not an exhaust performance part (e.g., a high-flow gasket or cat-back system). It will not improve horsepower, torque, or sound significantly its sole purpose is to seal the exhaust system properly.

2. **Potential for Counterfeit Parts** Since this is a relatively common part, there is a risk of purchasing a counterfeit or low-quality gasket from untrusted sellers. Always buy from reputable dealers or authorized distributors to avoid this issue.

3. **Wear Over Time** Even high-quality gaskets will degrade with prolonged use, especially in harsh conditions (cold, salt, moisture). It may need replacement every few years or after significant mileage, depending on usage.

4. **No Upgrade in Sound or Flow** If you re looking to modify the exhaust for a deeper sound or improved airflow, this gasket won t provide those benefits. For such upgrades, you d need a full exhaust system or specialized gaskets designed for performance.

5. **Requires Disassembly** Installing or replacing the gasket requires removing the tailpipe, which involves some disassembly of the exhaust system. This may not be ideal if you re looking for a quick, no-tools-required fix.

6. **Material Compatibility Concerns** While SPI gaskets are generally reliable, some users report issues with certain materials (e.g., rubber vs. silicone) degrading faster in extreme cold or heat. Ensure the gasket s material is suitable for your climate.

7. **No Warranty on DIY Installation** If you install the gasket yourself and encounter issues (e.g., improper sealing, leaks), you won t have warranty coverage from the manufacturer. Professional installation may be recommended for peace of mind.

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### **Conclusion:**

The **4573-S678987-73 SPI Tailpipe Gasket** is a **practical and cost-effective solution** for addressing a leaking or worn gasket in your 2012 Ski-Doo Summit Sport. It offers **OEM fitment, durability, and ease of installation**, making it an ideal choice for maintaining the integrity of your exhaust system. However, it does **not** enhance performance, sound, or airflow it simply prevents leaks and ensures the exhaust functions correctly.

If your primary concern is **fixing a leak or replacing a damaged gasket**, this part is a **solid recommendation**. If you re looking for **performance upgrades or a deeper exhaust note**, you would need to explore other aftermarket exhaust systems or gaskets designed for those purposes.

### **Recommendation:**

- **Buy from a trusted source** (e.g., official Ski-Doo dealers, reputable online retailers like **Ski-Doo Outlet, Arctic Cat Parts, or SPI s website**) to avoid counterfeit parts.

- **Inspect the gasket upon arrival** for defects or damage before installation.

- **Follow proper installation procedures**, including cleaning the mating surfaces and ensuring a tight seal.

- **Consider professional installation** if you re unsure about handling the exhaust system, as improper installation can lead to leaks or damage.

- **Monitor the gasket s condition** during regular maintenance checks, as it may need replacement every few years depending on usage.

**Final Verdict:** **Worth purchasing** if you need a reliable, direct replacement gasket for your Ski-Doo s tailpipe. Not a performance upgrade, but essential for maintaining exhaust system integrity.

Details:

I need to exchange an item.: Brand: Sports Parts Inc, model Number: 4573-S678987-73. 2005 - 2008 Ski-Doo GTX 500SS Sport. Parts without fitment are to be assumed universal and may require vehicle modification.

2012 - 2017 Ski-Doo Grand Touring Sport 600 ACE. This is helpful if you are buying multiple items. 2012 - 2017 Ski-Doo Free ride E-TEC 800R 154.

part #: 4573s67898773 price

  • $34.46

specifications exhaustsnowmobilee:

  • for models: X16, Summit
  • for makes: Ski-doo
  • for years: 2012
  • brand: Sports Parts Inc
  • mpn: 4573-s678987-73

seller exhaustsnowmobilee:

  • # reviews: 77595
  • rating: 99.9%
  • city: Boise, ID

general exhaustsnowmobilee:

  • condition: New
  • Parts Accessories > Snowmobile Parts > Exhaust

offer exhaustsnowmobilee:

  • quantity: 9
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • started: February 13, 2026

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  • policy: Returns Accepted
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  • time: 30 Days

shipping exhaustsnowmobilee:

  • type: Fixed
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for models: x16, summit, for makes: ski-doo, for years: 2012,
category: snowmobile parts > exhaust, sku: 9606103852412722,
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