1. Exhaust Snowmobile Parts For Sale
  2. sku: 9603240043001891
  3. SPORTS INC 4319-S678479-89

SPORTS PARTS INC 4319-S678479-89 Spi Tailpipe Ski Doo GASKET-51 1/2 I.D.X64 O.D.X16 1/5

fits model: X16, Mx. make: Ski-doo. year: 2011–2012.

4319-s678479-89 Sports Parts Inc Spi Tailpipe Gasket-51 1/2 I.d.x64 O.d.x16 1/5 H For 2011-2012 Ski-doo Mx Z

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4319-S678479-89 )

Review SPORTS PARTS INC Spi Tailpipe 1/2.d.x64.d.x16 1/5for Ski doo fits X16 MX 2011–2012

The **Sports 4319-S678479-89 SPI Tailpipe Gasket** is a precision-engineered aftermarket component designed specifically for the **2011 2012 Ski-Doo MX** lineup, ensuring a seamless and leak-proof connection between the exhaust system and the engine s tailpipe assembly. Crafted from high-performance **SPI (Silicon Polymer Impregnated) material**, this gasket delivers superior durability, heat resistance, and flexibility, making it ideal for the demanding conditions of off-road riding. With an **inner diameter (I.D.) of 5 inches**, an **outer diameter (O.D.) of 6 inches**, and a **thickness of 1/5 inch**, this gasket is meticulously sized to fit snugly within the MX s exhaust housing, eliminating gaps that could lead to exhaust gas leaks, reduced performance, or premature wear on the gasket itself. The SPI material not only resists cracking under extreme temperatures but also maintains its elasticity, ensuring a consistent seal even after prolonged use or exposure to the harsh vibrations inherent in ATV riding. Whether you're tackling rough trails, performing maintenance, or upgrading your Ski-Doo s exhaust system, this gasket provides a reliable, long-lasting solution that helps preserve engine efficiency and exhaust flow while minimizing the risk of costly repairs. Its universal compatibility with the specified model years ensures a hassle-free installation, allowing riders to focus on the thrill of the ride without worrying about exhaust system integrity.

### Pros and Cons of buying a **Sports 4319-S678479-89 SPI Tailpipe Gasket (51 1/2" I.D. x 64" O.D. x 16" Length) for 2011-2012 Ski-Doo MX**

#### **Pros:**

1. **OEM Fitment** This gasket is designed specifically for the 2011-2012 Ski-Doo MX series, ensuring a proper fit without modifications. This reduces the risk of leaks or improper sealing, which can lead to performance issues or engine damage.

2. **High-Quality Material** The SPI (Ski-Doo Performance International) brand is known for using durable materials that resist heat, vibration, and wear. A well-made gasket helps maintain exhaust system integrity and prevents premature failure.

3. **Prevents Exhaust Leaks** A faulty or missing tailpipe gasket can cause exhaust gases to escape into the engine bay, reducing performance and increasing emissions. This gasket ensures a tight seal, keeping exhaust gases contained where they belong.

4. **Easy Installation** Since it s a direct replacement part, installation is straightforward for those with basic mechanical skills. No special tools or modifications are typically required beyond standard exhaust system maintenance.

5. **Cost-Effective Solution** Replacing a worn gasket is far cheaper than dealing with the consequences of a failed exhaust system, such as damaged mufflers, catalytic converters, or even engine backpressure issues.

6. **Improves Engine Efficiency** A properly sealed exhaust system allows for optimal exhaust flow, which can help maintain engine performance and fuel efficiency. Leaks can cause a vacuum effect that draws unburned fuel into the exhaust, wasting fuel and reducing power.

7. **Extends Exhaust System Lifespan** By preventing corrosion and heat-related damage from escaping gases, this gasket helps prolong the life of the entire tailpipe and muffler assembly.

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#### **Cons:**

1. **Potential Counterfeit Risk** Some aftermarket parts, even from reputable brands, may be counterfeit or low-quality knockoffs. Ensure you purchase from an authorized dealer or a trusted online retailer to avoid receiving a substandard gasket.

2. **Limited Availability** Depending on the region, this specific part may not be widely stocked in local stores. You may need to order it online, which could result in shipping delays.

3. **Installation Challenges for DIYers** While the gasket itself is simple to replace, if the surrounding exhaust components (like bolts or flanges) are corroded or stripped, installation could become difficult. In such cases, professional help may be required.

4. **Price Sensitivity** Compared to generic or no-name gaskets, this SPI part may be slightly more expensive. However, the trade-off in quality and longevity often justifies the cost.

5. **Warranty Considerations** If your Ski-Doo is still under manufacturer warranty, replacing the gasket with an aftermarket part (even if it s OEM-compatible) could void certain warranty coverage. Check with Ski-Doo or your dealer before proceeding.

6. **Compatibility Doubts** While the part is advertised for 2011-2012 models, there s always a small chance of fitment issues if the exact model variant differs slightly (e.g., MXZ vs. MXZ Pro). Verify the part number and model year compatibility before purchasing.

7. **Environmental Exposure Risks** If the gasket is exposed to extreme conditions (e.g., saltwater, heavy off-roading, or frequent high-speed riding), it may degrade faster than expected. Regular inspections are recommended in harsh environments.

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### **Conclusion:**

The **Sports 4319-S678479-89 SPI Tailpipe Gasket** is a reliable and high-quality replacement part for the 2011-2012 Ski-Doo MX, offering significant benefits in terms of sealing, performance, and longevity. The pros far outweigh the cons, especially for riders who prioritize durability and OEM-level fitment. The main drawbacks such as potential counterfeit risks or installation challenges can be mitigated by purchasing from trusted sources and ensuring proper preparation before installation.

### **Recommendation:** **Buy this gasket if:**

- You notice signs of a failing gasket (exhaust leaks, rattling noises, reduced performance).

- You want a long-lasting, OEM-compatible solution to maintain your Ski-Doo s exhaust system.

- You re comfortable with basic DIY maintenance or can access professional help if needed.

**Avoid or proceed with caution if:**

- You suspect the part is a counterfeit (buy from authorized dealers or verified sellers).

- Your Ski-Doo is still under warranty, and you re unsure how aftermarket parts will affect coverage.

- The surrounding exhaust components are severely corroded, making installation difficult without professional assistance.

**Final Verdict:** This is a **strong, recommended purchase** for riders looking to maintain or restore their Ski-Doo s exhaust system. The investment in quality now can prevent costly repairs later. Always double-check the part number and model compatibility before ordering.

Details:

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification. 2007 - Ski-Doo MX Z 600 Blizzard.: Brand: Sports Parts Inc, model Number: 4319-S678479-89.

2009 - 2011 Ski-Doo MX Z 600 TNT. 2004 - 2005 Ski-Doo MX Z 500 Trail. This is helpful if you are buying multiple items.

part #: 4319s67847989 price

  • $34.46

specifications exhaustsnowmobilee:

  • for models: X16, Mx
  • for makes: Ski-doo
  • for years: 2011-2012
  • brand: Sports Parts Inc
  • mpn: 4319-s678479-89

offer exhaustsnowmobilee:

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

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general exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

  • rating: 99.9%
  • city: Boise, ID
  • # reviews: 77572

shipping exhaustsnowmobilee:

  • transit: 4-6 Days
  • service: Standard
  • cost: $0.00
  • class: Standard
  • type: Fixed

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  • time: 30 Days
for models: x16, mx, for makes: ski-doo, for years: 2011-2012,
category: snowmobile parts > exhaust, sku: 9603240043001891,
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