STARTING LINE PRODUCTS 3767-S551375-77 Slp Exhaust Flange Grafoil Seal Cat

( Brand: Starting Line Products ), ( Manufacturer Part Number: 3767-S551375-77 ), ( Part Type: Seal Exhaust Flange )

Review STARTING LINE PRODUCTS Slp Exhaust Flange Grafoil Seal Arctic Cat fits PANTERA EFI ESR 600 2002–2003

The **Starting Line 3767-S551375-77 SLP Exhaust Flange Grafoil Seal** is a precision-engineered aftermarket component meticulously designed to restore factory-like performance and sealing integrity to the exhaust system of the **2002-2003 Arctic Cat Pantera 600 EFI (ESR)**. Crafted from high-quality **Grafoil**, a reinforced graphite-based material, this seal is engineered to withstand the extreme heat, vibration, and pressure fluctuations inherent in high-performance outboard motors. Unlike generic rubber or silicone seals that degrade under prolonged exposure to exhaust gases and thermal cycling, Grafoil exhibits exceptional resistance to oil, fuel, and temperature variations, ensuring long-lasting durability and a secure, leak-free connection between the exhaust flange and the engine s exhaust housing. The **SLP (Super Low Profile)** designation underscores its slim profile, allowing for an unobstructed fit within the tight confines of the Pantera 600 s exhaust manifold, while its precision-molded design eliminates the need for excessive gasket material, reducing the risk of misalignment or improper seating. This seal is a direct replacement for the OEM part, maintaining the original exhaust flow dynamics while mitigating common issues such as exhaust leaks, rattling, or premature wear critical for preserving the engine s efficiency and preventing costly internal damage. Ideal for both restoration projects and routine maintenance, this seal is a trusted choice among Arctic Cat enthusiasts seeking to enhance reliability and performance without compromising the integrity of their EFI-equipped outboard.

### **Pros and Cons of buying a Starting Line 3767-S551375-77 SLP Exhaust Flange Grafoil Seal for a 2002-2003 Arctic Cat Pantera 600 EFI ESR**

1. **OEM Compatibility** The part is designed specifically for the 2002-2003 Arctic Cat Pantera 600 EFI ESR, ensuring a proper fit without modifications. This reduces the risk of installation issues or leaks caused by improper sizing.

2. **High-Quality Grafoil Material** Grafoil is a durable, heat-resistant sealing material that provides a reliable gasket between the exhaust flange and the engine or muffler. It resists warping, cracking, and degradation under high temperatures, which is critical for performance engines.

3. **Easy Installation** As a direct replacement part, it should fit seamlessly with standard tools, reducing labor time and complexity compared to custom or aftermarket solutions that may require machining or adjustments.

4. **Prevents Exhaust Leaks** A failing exhaust flange seal can cause exhaust gases to escape, leading to reduced performance, increased emissions, and potential damage to surrounding components. This seal helps maintain a tight, leak-free connection.

5. **Cost-Effective Solution** Compared to full exhaust system replacements or custom fabrication, this is a relatively inexpensive part that addresses a common wear point in exhaust systems. It can extend the life of your existing exhaust components.

6. **Widely Available** Being a Starting Line part, it is likely stocked by Arctic Cat dealers, performance shops, and online retailers, making it easy to source without long waits or special ordering.

7. **Maintains Engine Efficiency** A properly sealed exhaust system ensures optimal exhaust flow, which helps maintain engine power, fuel efficiency, and proper backpressure regulation.

---

1. **Potential for Counterfeit or Low-Quality Replicas** While Starting Line is a reputable brand, there is always a risk of purchasing a counterfeit or substandard part, especially from third-party sellers. Always verify the seller s authenticity and check for proper packaging or serial numbers.

2. **Wear Over Time** Even high-quality Grafoil seals can degrade with prolonged use, especially under extreme conditions (e.g., aggressive riding, high RPMs, or frequent high-temperature operation). This may require periodic replacement.

3. **Installation Challenges** If the flange or mating surfaces are corroded, warped, or contaminated (e.g., with old gasket material or debris), the new seal may not create a perfect seal. Thorough cleaning and inspection of the flange are necessary for optimal performance.

4. **Limited Longevity Compared to Metal Gaskets** While Grafoil is durable, it is not as long-lasting as metal gaskets or clamps in some applications. Over time, it may require replacement, especially if the engine or exhaust system is frequently exposed to moisture or extreme temperatures.

5. **No Warranty on Performance** The part itself may come with a manufacturer s warranty, but there is no guarantee that it will last indefinitely without premature failure. Factors like riding conditions, maintenance, and engine tuning can affect its lifespan.

6. **Potential for Over-Tightening** If the flange is tightened excessively during installation, it can crush the Grafoil seal, leading to leaks or damage to the mating surfaces. Proper torque specifications should be followed to avoid this.

7. **Compatibility with Modified Exhausts** If you have modified your exhaust system (e.g., with larger pipes, custom mufflers, or aftermarket headers), the stock flange may not align perfectly with the new components. Custom fabrication may be required in such cases.

---

The **Starting Line 3767-S551375-77 SLP Exhaust Flange Grafoil Seal** is a **reliable, OEM-compatible solution** for addressing exhaust leaks in your 2002-2003 Arctic Cat Pantera 600 EFI ESR. Its use of high-quality Grafoil ensures a durable seal that resists heat and vibration, making it a practical choice for both maintenance and performance applications. The part is easy to install and widely available, which adds to its appeal for DIYers and professionals alike.

However, its effectiveness depends on **proper installation, regular maintenance, and the condition of the mating surfaces**. While it is not a permanent fix (as all gaskets eventually wear), it provides a **cost-effective and efficient solution** to prevent exhaust leaks and maintain engine performance.

If you are experiencing **exhaust leaks, hissing noises, or reduced power**, this seal is a **strong recommendation** as a first-line repair. For long-term reliability, consider pairing it with a **thorough inspection of the exhaust system** and ensuring all components are in good condition.

**Purchase the Starting Line Grafoil seal** if you need a direct, high-quality replacement for your exhaust flange. Follow the installation instructions carefully, use the correct torque specifications, and inspect the seal periodically. If you suspect underlying issues with the flange or exhaust system, address those first to ensure the seal performs optimally. For maximum longevity, consider upgrading to a **metal-backed gasket or clamps** if your riding conditions are particularly harsh.

Details:

SLP Exhaust Flange Grafoil Seal for 2002 - 2003 Arctic Cat Pantera 600 EFI ESR: For Systems. This is helpful if you are buying multiple items. I need to exchange an item. 2002 - 2003 Arctic Cat Pantera 600 EFI ESR Twin Pipe.

Brand: Starting Line Products, model Number: 3767-S551375-77. Parts without fitment are to be assumed universal and may require vehicle modification. 2004 - 2005 Arctic Cat Pantera 600 EFI Twin Pipe.

part #: 3767s55137577 price

• $57.87

specifications exhaustsnowmobilee:

• for models: Efi, Esr, 600, Pantera
• for makes: Arctic, Arctic-cat
• for years: 2002-2003
• brand: Starting Line Products
• mpn: 3767-s551375-77
• part type: Seal Exhaust Flange

shipping exhaustsnowmobilee:

• transit: 2-6 Days
• cost: $0.00
• type: Fixed
• service: Standard
• class: Standard

returns exhaustsnowmobilee:

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

general exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• sold: 0
• started: May 6, 2026
• quantity: 3
• availability: In Stock
• options: Ship-to-home

payments exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

• city: Boise, ID
• # reviews: 84657
• rating: 99.9%

Starting Line Products 3767-S551375-77 Is Similar To:

• 09-233 Starting Line Products Staring (36.8% similar) ...(March 25th, 2017)
• 09-243 Starting Line Products Polaris Xc Gen Ii Ves Canister (42.3% 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 (38.8% 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 (36.8% similar) Phone: address: 215 visit us at our San Diego location...(April 9th, 2017)
• 09-271 Starting Line Products Lightweight Silencer (38.8% 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 (29.5% 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 (32.4% 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 (34.9% 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 (34.9% 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 (34.9% 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 (34.9% 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)