1. Exhaust Snowmobile Parts For Sale
  2. sku: 9907776165692722
  3. SPORTS INC 4457-S660755-47

SPORTS PARTS INC 4457-S660755-47 Spi Pipe Exhaust Seal

fits year: 2002–2003.

4457-s660755-47 Sports Parts Inc Spi Y-pipe To Pipe Exhaust Seal-i.d.-67.3mm-o.d.-85mm-height-17mm For 2002-2003

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4457-S660755-47 ), ( Part Type: Pipe Seal Exhaust )

Review SPORTS PARTS INC Spi Y pipe To Exhaust Seal-i.d.-67.3mm-o.d.-85mm- Height 17mm fits 2002–2003

The **SPI Y-Pipe Exhaust Seal (Part Number: 4457-S660755-47)** is a precision-engineered aftermarket component designed specifically for the exhaust systems of **2002 2003 model year vehicles**, ensuring a secure and leak-free connection between the catalytic converter and the downstream muffler or tailpipe assembly. Crafted from high-quality **heat-resistant silicone or rubber**, this Y-pipe seal is engineered to withstand extreme temperatures, vibration, and exhaust gas pressures, making it an ideal upgrade for performance-oriented or modified vehicles where stock seals often fail prematurely due to wear or improper fitment. With an **internal diameter (I.D.) of 67.3mm (2.65 inches)** and an **external diameter (O.D.) of 85mm (3.35 inches)**, this seal is meticulously sized to match the exhaust flange interfaces found on these particular model years, providing a snug, interference-fit seal that eliminates exhaust leaks while maintaining structural integrity. The **17mm (0.67-inch) height** ensures compatibility with standard exhaust spacing, allowing for easy installation without the need for excessive modification or clearance adjustments. Whether you're restoring stock performance, upgrading to a high-flow exhaust system, or addressing persistent leaks, this **SPI Y-Pipe Exhaust Seal** delivers a durable, long-lasting solution that enhances both reliability and efficiency. Built to meet or exceed OEM standards, it is a trusted choice among mechanics and enthusiasts seeking a reliable, no-fuss replacement for worn or damaged factory seals.

### **Pros and Cons of buying a SPI Y-Pipe Exhaust Seal (Part #4457-S660755-47) for a 2002-2003 Vehicle**

#### **Pros:**

1. **Direct Fitment** This seal is specifically designed for the 2002-2003 model year, ensuring compatibility with the factory exhaust system. It should fit without modifications, reducing the risk of installation errors.

2. **High-Quality Material** SPI (Sports Performance Industries) is known for manufacturing durable exhaust components, often using heat-resistant materials to prevent warping or cracking under high temperatures.

3. **Prevents Leaks** A properly installed Y-pipe seal prevents exhaust gases from escaping, improving engine efficiency and reducing noise. This is particularly useful if your current seal is cracked or worn.

4. **Easy Installation** Since it s a direct-fit part, replacing it typically requires minimal tools and labor, making it a straightforward DIY project for those comfortable with basic mechanical work.

5. **Cost-Effective Solution** Compared to full exhaust system replacements, this seal is relatively inexpensive, offering a targeted fix for a common issue without breaking the bank.

6. **Compatibility with Aftermarket Upgrades** If you ve modified your exhaust system (e.g., added a cat-back or headers), this seal may still fit, though verification is recommended to ensure no conflicts with other components.

7. **Reduces Catalytic Converter Damage** A failing Y-pipe seal can allow exhaust gases to bypass the catalytic converter, leading to overheating and premature failure. Replacing it helps maintain proper flow and converter longevity.

---

#### **Cons:**

1. **Potential for Counterfeit Parts** Some aftermarket seals, especially from lesser-known brands, may be counterfeit or low-quality. Ensure you purchase from a reputable seller (e.g., SPI s official distributors, RockAuto, or trusted online marketplaces) to avoid receiving a knockoff.

2. **Installation Challenges** If the surrounding exhaust components (e.g., hangers, bolts, or the Y-pipe itself) are corroded or damaged, installation may require additional cleaning or replacement parts. Rust or misalignment can complicate the process.

3. **Limited Longevity with Aggressive Driving** While durable, exhaust seals are not indestructible. Aggressive driving (e.g., frequent high-RPM use, towing, or off-roading) can accelerate wear, potentially requiring replacement sooner than expected.

4. **Noise or Vibration Issues** If the seal doesn t sit flush or if the exhaust system has loose hangers, vibrations during acceleration or deceleration could become noticeable. This may require additional adjustments.

5. **Compatibility with Modified Exhausts** While designed for stock applications, aftermarket exhausts (e.g., straight-pipes, high-flow systems) may alter the fitment slightly. Double-check measurements or consult a professional if your exhaust has been modified.

6. **Time-Consuming for Beginners** If you re not experienced with exhaust work, removing and reinstalling the Y-pipe could take longer than expected, especially if you encounter stubborn bolts or corrosion.

7. **No Warranty on Some Retailers** Some online sellers may not offer warranties or returns, leaving you responsible for defects. Buying from a dealer with a return policy mitigates this risk.

---

### **Conclusion:**

The **SPI Y-pipe exhaust seal (4457-S660755-47)** is a **reliable, cost-effective solution** for addressing leaks in the exhaust system of a 2002-2003 vehicle. Its direct fitment, durability, and ease of installation make it a practical choice for DIYers and mechanics alike. However, **quality control, installation conditions, and long-term driving habits** can influence its performance.

If your primary concern is a **leaking Y-pipe seal causing noise, reduced power, or catalytic converter issues**, this part is a **strong recommendation**. For those with **modified exhausts or aggressive driving habits**, additional precautions (e.g., using high-temperature thread locker, checking for corrosion) may be necessary.

**Final Recommendation:**

Purchase the seal from a **trusted seller** (e.g., SPI s authorized dealers, RockAuto, or eBay with verified feedback). Follow the installation instructions carefully, ensuring a **tight but not overtightened** fit to avoid damage. If you encounter resistance or corrosion during installation, consider cleaning the threads or using penetrating oil. For long-term reliability, pair this with a **high-quality exhaust clamp** and periodic inspections of the surrounding system. This seal will likely serve you well for **several years** with normal use.

Details:

2002 - Arctic Cat Mountain 500. SPI Y-Pipe to Pipe Exhaust Seal-I.D.-67.3mm-O.D.-85mm- height 17mm for 2002 2003 Arctic Cat Pantry 600 EFI ESR Snowmobile: Y-pipe exhaust seal.: Brand: Sports Parts Inc, model Number: 4457-S660755-47. I need to exchange an item.

2003 - Arctic Cat Mountain 600 EFI 136. This is helpful if you are buying multiple items. Parts without fitment are to be assumed universal and may require vehicle modification.

part #: 4457s66075547 price

  • $20.58

specifications exhaustsnowmobilee:

  • for years: 2002-2003
  • brand: Sports Parts Inc
  • mpn: 4457-s660755-47
  • part type: Pipe Seal Exhaust

returns exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

  • # reviews: 82717
  • city: San Marcos, CA
  • rating: 99.9%

payments exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

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

shipping exhaustsnowmobilee:

  • transit: 4-8 Days
  • class: Standard
  • type: Fixed
  • cost: $0.00
  • service: Standard

general exhaustsnowmobilee:

  • condition: New
  • Parts Accessories > Snowmobile Parts > Exhaust
for years: 2002-2003, part type: pipe seal exhaust,
category: snowmobile parts > exhaust, sku: 9907776165692722,
Sports Parts Inc 4457-S660755-47 Is Similar To:
exhaustsnowmobilee logo
1 offer $20.58 USD
  • New. Offer #1 priced at $20.58 + $0.00 shipping estimate = $20.58* total. 2003 - 2003 Arctic Cat Mountain Cat 800 EFI 144. Y-pipe to pipe exhaust seal.FREE SHIPPING

Copyright © exhaustsnowmobilee.com