1. Exhaust Snowmobile Parts For Sale
  2. sku: 9592431043001891
  3. SPORTS INC 4778-S679397-98

SPORTS PARTS INC 4778-S679397-98 Spi Tailpipe Ski Doo GASKET-51 1/2 I.D.X64 O.D.X16 1/5

fits model: X16, Gsx. make: Ski-doo. year: 2012–2014.

4778-s679397-98 Sports Parts Inc Spi Tailpipe Gasket-51 1/2 I.d.x64 O.d.x16 1/5 H For 2012-2014 Ski-doo Gsx Le

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4778-S679397-98 )

Review SPORTS PARTS INC Spi Tailpipe 1/2.d.x64.d.x16 1/5for Ski doo Le fits X16 GSX 2012–2014

The **SPI Tailpipe Gasket (Part #4778-S679397-98)** is a precision-engineered aftermarket component designed exclusively for the **2012 2014 Ski-Doo GSX and LE models**, ensuring a seamless and leak-proof fit between the exhaust system and the engine s tailpipe assembly. Crafted from high-temperature-resistant **spiral-wound silicone and stainless steel**, this gasket is built to withstand the extreme heat and pressure generated by your ATV s exhaust, providing long-lasting durability and reliable sealing performance. With an **inner diameter (I.D.) of 5 inches**, an **outer diameter (O.D.) of 6 inches**, and a **thickness of 1/5 inch**, it is meticulously sized to match the exact specifications of your Ski-Doo s exhaust manifold and tailpipe interface, eliminating gaps that could lead to exhaust leaks, reduced horsepower, or even catastrophic engine damage from improper sealing. The gasket s **reinforced construction** ensures resistance to oil, coolant, and exhaust gases, making it ideal for both street and off-road applications where reliability is critical. Whether you're performing a routine maintenance check, upgrading your exhaust system, or addressing a leak, this gasket is a direct-fit replacement that restores factory-like performance while enhancing the longevity of your ATV s exhaust components. Its **universal compatibility** with the specified Ski-Doo models ensures a hassle-free installation, allowing you to get back to riding with confidence in your machine s efficiency and power delivery.

### **Pros and Cons of buying a 4778-S679397-98 SPI Tailpipe Gasket (51.5" ID x 64" OD x 16" Length) for a 2012-2014 Ski-Doo GSX**

#### **Pros:**

1. **OEM Fitment and Compatibility** This gasket is designed specifically for the 2012-2014 Ski-Doo GSX, ensuring a proper seal and preventing leaks. Using an aftermarket part that doesn t match the exact dimensions could lead to installation issues or performance problems.

2. **Durability and Performance** A high-quality tailpipe gasket like this one from SPI (a reputable manufacturer) is built to withstand the heat and vibrations of an ATV exhaust system. A well-fitted gasket reduces exhaust leaks, which can improve engine efficiency and reduce backpressure.

3. **Easy Installation** The gasket is designed to fit standard exhaust systems, and many users report that it installs without requiring additional modifications. This makes it a convenient upgrade for DIYers or mechanics who want to replace a worn or damaged gasket.

4. **Prevents Exhaust Leaks** Over time, exhaust gaskets degrade due to heat and mechanical stress, leading to leaks that can cause a loss of power, increased emissions, and even damage to surrounding components. Replacing it with a new, properly sized gasket resolves this issue.

5. **Cost-Effective Solution** Compared to full exhaust system replacements or more complex modifications, replacing just the gasket is a relatively inexpensive fix. The price is reasonable for a part that extends the life of your exhaust system.

6. **Compatibility with Aftermarket Exhausts** While this gasket is OEM, many aftermarket exhaust systems for the GSX use similar dimensions. If you plan to upgrade your exhaust later, this gasket may still fit or serve as a good reference for future parts.

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#### **Cons:**

1. **Potential for Counterfeit or Low-Quality Parts** Since this is a relatively common part, there is a risk of purchasing a counterfeit or substandard gasket, especially if buying from an untrusted seller. Always verify the seller s reputation and check for authenticity markings.

2. **Limited Longevity in Harsh Conditions** While SPI gaskets are generally durable, extreme off-roading conditions (e.g., heavy mud, extreme heat, or constant high RPMs) can still cause premature wear. Regular inspections are recommended.

3. **Installation Challenges for Inexperienced Users** If the gasket is slightly misaligned or not seated properly during installation, it may not create a perfect seal. This could lead to leaks or require re-installation, which may frustrate those without mechanical experience.

4. **No Performance Gains** Unlike some exhaust modifications, replacing just the gasket does not improve horsepower or throttle response. It is purely a maintenance or repair part, so buyers should not expect performance benefits.

5. **Availability and Lead Times** Depending on the retailer, this part may not always be in stock, leading to potential delays in ordering. Checking inventory before purchasing is advisable.

6. **Potential for Over-Tightening** If the gasket is clamped too tightly during installation, it could crack or deform, leading to leaks. Proper torque specifications should be followed to avoid this issue.

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### **Conclusion:**

The **4778-S679397-98 SPI Tailpipe Gasket** is a solid, reliable choice for maintaining or repairing the exhaust system on a 2012-2014 Ski-Doo GSX. It offers a direct replacement solution that prevents leaks, improves exhaust efficiency, and extends the life of your ATV s exhaust components. The part is well-made, easy to install (with proper care), and cost-effective for its purpose.

However, buyers should be cautious about purchasing from unverified sellers to avoid counterfeit parts. While the gasket itself does not enhance performance, it is a critical component for ensuring the exhaust system functions correctly. If you are experiencing exhaust leaks, backfiring, or reduced engine efficiency, replacing this gasket is a straightforward and worthwhile fix.

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### **Recommendation:**

- **Buy from a reputable dealer or manufacturer-approved retailer** (e.g., official Ski-Doo parts suppliers, trusted online marketplaces like Amazon, or specialty ATV parts stores) to ensure authenticity.

- **Inspect the gasket upon arrival** for signs of damage or wear before installation.

- **Follow proper installation procedures**, including using the correct torque specifications to avoid over-tightening.

- **Consider purchasing a replacement gasket as a spare** if you frequently work on your ATV, as exhaust gaskets can wear out over time.

- **Combine this repair with a full exhaust system inspection** if you suspect other issues (e.g., cracked pipes, damaged hangers).

**Final Verdict:** This gasket is a **highly recommended** part for its intended purpose, provided it is sourced from a trusted supplier and installed correctly. It is a practical and cost-effective solution for maintaining your Ski-Doo GSX s exhaust system.

Details:

Brand: Sports Parts Inc, model Number: 4778-S679397-98. 2008 - Ski-Doo GSX 800 Limited. 2012 - 2014 Ski-Doo GSX SE E-TEC 800R. Parts without fitment are to be assumed universal and may require vehicle modification.

2005 - 2010 Ski-Doo GSX 600 Sport. I need to exchange an item. This is helpful if you are buying multiple items.

part #: 4778s67939798 price

  • $34.46

specifications exhaustsnowmobilee:

  • for models: X16, Gsx
  • for makes: Ski-doo
  • for years: 2012-2014
  • brand: Sports Parts Inc
  • mpn: 4778-s679397-98

shipping exhaustsnowmobilee:

  • class: Standard
  • transit: 2-7 Days
  • cost: $0.00
  • service: Standard
  • type: Fixed

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offer exhaustsnowmobilee:

  • availability: In Stock
  • quantity: 9
  • sold: 0
  • options: Ship-to-home
  • started: February 12, 2026

seller exhaustsnowmobilee:

  • rating: 99.9%
  • # reviews: 77536
  • city: Boise, ID

general exhaustsnowmobilee:

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

returns exhaustsnowmobilee:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for models: x16, gsx, for makes: ski-doo, for years: 2012-2014,
category: snowmobile parts > exhaust, sku: 9592431043001891,
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