STARTING LINE PRODUCTS 2479-S746799-49 Slp Exhaust Flange Seal Grafoil Pipe Cat

( Brand: Starting Line Products ), ( Manufacturer Part Number: 2479-S746799-49 ), ( Part Type: Seal Pipe Exhaust Flange )

Review STARTING LINE PRODUCTS Slp Exhaust Flange Grafoil Seal twin Pipe Arctic Cat fits TWIN ZR EFI 800 2002–2003

The **Starting Line 2479-S746799-49 SLP Exhaust Flange Grafoil Seal for Twin-Pipe Applications** is a precision-engineered aftermarket component designed specifically to enhance the performance, durability, and reliability of the exhaust system on **2002 2003 Arctic Cat ZR 800 EFI** outboard motors. This high-quality exhaust flange features a **Grafoil seal**, a proprietary material known for its exceptional heat resistance, flexibility, and longevity, ensuring a secure, leak-proof connection between the exhaust manifold and the twin-pipe assembly. Crafted from durable, corrosion-resistant materials, this flange is built to withstand the intense thermal cycling and mechanical stress inherent in high-performance marine applications, preventing premature wear and maintaining optimal exhaust flow. The **SLP (Super Low Profile) design** minimizes interference with the motor s internal components, allowing for a cleaner installation while preserving the stock exhaust system s functionality. Whether you're upgrading for improved horsepower, reducing backpressure, or simply replacing a worn-out OEM seal, this flange provides a straightforward, bolt-on solution that restores factory-like performance without compromising on quality. Ideal for enthusiasts and professionals alike, it combines ease of installation with long-term reliability, making it a trusted choice for maintaining the peak efficiency of your Arctic Cat ZR 800 EFI s exhaust system.

**Pros and Cons of buying a Starting Line 2479-S746799-49 SLP Exhaust Flange with Grafoil Seal for a 2002-2003 Arctic Cat ZR 800 EFI**

### **Pros**

1. **Compatibility** This part is specifically designed for the 2002-2003 Arctic Cat ZR 800 EFI, ensuring a proper fit without modifications. The flange is engineered to match the factory exhaust system, reducing the risk of leaks or improper installation.

2. **High-Quality Materials** The flange is made from durable stainless steel, which resists corrosion and withstands high temperatures better than standard steel. The inclusion of a **Grafoil seal** (a high-temperature, flexible gasket material) ensures a tight, long-lasting seal that prevents exhaust gases from escaping and reduces the risk of leaks over time.

3. **Performance Benefits** A well-sealed exhaust system improves engine efficiency by maintaining proper backpressure. The Grafoil seal minimizes friction and heat loss, which can contribute to slightly better throttle response and fuel economy compared to a worn or improperly sealed exhaust component.

4. **Easy Installation** Designed as a direct replacement, this flange should be straightforward to install, especially if you have basic mechanical experience. It replaces the stock flange, and the Grafoil seal simplifies the process by eliminating the need for additional gasket materials.

5. **Cost-Effective Upgrade** Compared to a full exhaust system overhaul, replacing just the flange and seal is a relatively inexpensive way to address potential exhaust leaks or wear. It s a targeted fix rather than a full replacement, making it budget-friendly.

6. **Preventative Maintenance** If your current flange is cracked, corroded, or leaking, this part acts as a proactive replacement to avoid more significant issues down the road, such as exhaust gas contamination or engine damage from improper sealing.

7. **Brand Reputation** Starting Line is a well-regarded brand in the off-road and snowmobile industry, known for producing reliable, high-quality aftermarket parts. Their products are often backed by warranties, which adds confidence in the purchase.

---

### **Cons**

1. **Limited Performance Gains** While the flange and seal improve reliability and sealing, they do not significantly enhance horsepower, torque, or exhaust note. If your goal is purely performance tuning, you may need additional modifications (e.g., a cat-back exhaust system or headers).

2. **Potential Overkill for Minor Issues** If your exhaust system is otherwise in good condition and the only problem is a minor leak at the flange, replacing just this component may feel like an unnecessary upgrade. However, if the flange is worn or damaged, this is still a wise investment.

3. **Installation Challenges for Beginners** While the part is designed for easy replacement, improper installation (e.g., overtightening, misalignment, or failing to use the Grafoil seal correctly) could lead to leaks or damage. Those without mechanical experience may need to consult a professional.

4. **Cost Relative to Full Exhaust Systems** If you re planning to upgrade your entire exhaust system, purchasing just the flange and seal may not provide enough value. In that case, a full exhaust kit (including headers, mufflers, and downpipes) could offer better performance benefits.

5. **Grafoil Seal Durability Concerns** While Grafoil is durable, it can degrade over time if exposed to extreme temperatures or contaminants (e.g., oil, fuel, or road debris). If the seal is not installed correctly or if the flange is not properly cleaned before installation, the seal may fail prematurely.

6. **Availability of Alternatives** Depending on your location, you may find similar or even better alternatives from other manufacturers (e.g., **Arctic Cat OEM parts, MSD, or other aftermarket brands**). Comparing prices and reviews can help ensure you re getting the best deal.

7. **Potential for Counterfeit Parts** As with many aftermarket products, there is a risk of purchasing counterfeit or low-quality knockoffs, especially if buying from untrusted sellers. Always verify the seller s reputation and check for authenticity (e.g., packaging, part numbers, or seller ratings).

---

### **Conclusion**

The **Starting Line 2479-S746799-49 SLP Exhaust Flange with Grafoil Seal** is a **solid, reliable choice** for the 2002-2003 Arctic Cat ZR 800 EFI if you re experiencing flange-related issues (leaks, corrosion, or wear). Its **stainless steel construction and Grafoil seal** ensure a durable, leak-free fit, and it s a **cost-effective way to maintain or upgrade your exhaust system** without overhauling the entire setup.

However, if your primary goal is **performance tuning** (e.g., increased horsepower or exhaust tone), this part alone won t deliver significant gains. It s best suited for **reliability, preventative maintenance, or addressing specific exhaust leaks**.

For **DIY enthusiasts**, the installation is manageable, but those unfamiliar with exhaust systems may want to seek professional help to avoid mistakes. If you re open to exploring other brands or full exhaust kits, comparing options can ensure you re making the most cost-effective choice for your needs.

---

### **Recommendation**

- Your current flange is cracked, corroded, or leaking.

- You want a **direct, high-quality replacement** without modifying the rest of your exhaust system.

- You prioritize **durability and a secure seal** over performance upgrades.

- You re comfortable with a **moderate-cost, targeted fix** rather than a full exhaust overhaul.

- You re looking for **performance improvements** (e.g., cat-back exhaust, headers).

- You prefer **OEM Arctic Cat parts** or other brands with different warranties or pricing.

- Your exhaust system is otherwise in good shape, and you only need a minor seal replacement.

**Final Verdict:** This is a **strong, practical choice** for maintaining or upgrading your Arctic Cat ZR 800 s exhaust system, especially for those who value reliability and ease of installation. For pure performance, pair it with additional exhaust modifications if desired.

Details:

Parts without fitment are to be assumed universal and may require vehicle modification. 2007 - 2011 Arctic Cat F8 EFI Son Pro.: Brand: Starting Line Products, model Number: 2479-S746799-49. I need to exchange an item.

SLP Exhaust Flange Grafoil Seal-Twin Pipe for 2002 2003 Arctic Cat ZR 800 EFI: For Systems. 2010 - 2011 Arctic Cat F6 EFI Son Pro. This is helpful if you are buying multiple items.

part #: 2479s74679949 price

• $57.87

specifications exhaustsnowmobilee:

• for models: Zr, Efi, 800, Twin
• for makes: Arctic, Arctic-cat
• for years: 2002-2003
• brand: Starting Line Products
• mpn: 2479-s746799-49
• part type: Seal Pipe Exhaust Flange

returns exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• availability: In Stock
• quantity: 9
• sold: 0
• started: May 16, 2026
• options: Ship-to-home

seller exhaustsnowmobilee:

• city: Boise, ID
• rating: 99.9%
• # reviews: 85412

general exhaustsnowmobilee:

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

shipping exhaustsnowmobilee:

• service: Standard
• cost: $0.00
• type: Fixed
• class: Standard
• transit: 3-6 Days

payments exhaustsnowmobilee:

• credit card: Visa
• wallet: Google-pay
• other

Starting Line Products 2479-S746799-49 Is Similar To:

• 09-233 Starting Line Products Staring (37.9% similar) ...(March 25th, 2017)
• 09-243 Starting Line Products Polaris Xc Gen Ii Ves Canister (40.9% similar) The Starting Line part number is this a slp canister for 2000 Polaris 600 XC gen ii chassis vies. This is brand new...(November 26th, 2018)
• 09-251 Starting Line Products Lightweight Silencer (37.3% similar) Which together offer low sound level at a much lighter weight. Photos are for reference only. Model's equipped with this latest technology still sound like a snowmobile should, but the level of output is lower than previously experienced our era 2000 Products. On the continent of north America. On...(April 27th, 2018)
• 09-260 Starting Line Products Staring (37.9% similar) Phone: address: 215 visit us at our San Diego location...(April 9th, 2017)
• 09-271 Starting Line Products Lightweight Silencer (37.3% similar) Durable ceramic finish. Lightweight, durable silencers. Slaps new era 2014 silencing technology features designs combined with some exotic materials and manufacturing techniques. Which together offer low sound level at a much lighter weight. On the continent of north America. Slaps era 2007 ...(April 27th, 2018)
• 09-288s Slp Starting Line Products (29.3% similar) Or adverts. Has some small dents and scratches on outlet pipe and bracket been cut off, look at images close. Denise at...(May 26th, 2017)
• 09-302 Starting Line Products New (33.6% similar) Lighten up your snowmobile by replacing the stock silencer with slaps lightweight version. This silencer is compatible with slp single pipe, allowing pipe to be added at a later date pounds lighter than stock. Sound level emissions are also a focus at slp. So what sets slp silencers apart from the ...(June 22nd, 2017)
• 09-310b Starting Line Products Slp (34.7% similar) This silencer is not compatible with slp single pipe. All silencers are finished with ceramic coating which not only looks great, but also reduces radiant heat emissions by as much 40, resulting in cooler Underwood temperatures. No ecu modification is required. Satin black ceramic coating era 2014...(October 31st, 2017)
• 09-310s Starting Line Products Slp (34.7% similar) So what sets slp silencers apart from the rest. For starters, each silencer has been Dino tested and field verified to insure maximum reliable horsepower is attained while shedding desired weight. Factory Belem has small scratches in coating and two dents, see attached photo's. This silencer is not ...(September 27th, 2017)
• 09-317s Starting Line Products Slp (34.7% similar) Refer to attached photos. So what sets slp silencers apart from the rest. For starters, each silencer has been Dino tested and field verified to insure maximum reliable horsepower is attained while shedding desired weight. No ecu modification is required. Factory Belem has some scratches and coating...(November 9th, 2017)
• 09-319b Starting Line Products Slp (34.7% similar) No ecu modification is required. Lighten up your snowmobile by replacing the stock silencer with slaps lightweight version. Slp tested and passed sae J-2567 stationary sound test below 88 decibels. This silencer is compatible with slp single pipe on 800 model's, allowing to be added at a later date...(January 3rd, 2018)