SPORTS PARTS INC 4342-S336525-22 Spi Headpipe GASKET-65MM I.D.X78 1/2MM O.D.X19

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4342-S336525-22 )

Review SPORTS PARTS INC Spi Headpipe Gasket-65mm.d.x78 1/2mm.d.x19for Polaris fits 2011–2013

The **SPI Headpipe Gasket (Part #4342-S336525-22)** is a precision-engineered, high-performance gasket designed specifically for the **2011 2013 Polaris** lineup, including models like the **RZR XP 900, XP 1000, and XP 1000 Turbo**, as well as select **Polaris Sportsman and General** variants. Crafted from **high-temperature-resistant silicone rubber**, this gasket ensures a reliable seal between the headpipe and the engine, preventing oil leaks, reducing vibrations, and enhancing overall durability under demanding off-road conditions. With an **inner diameter (I.D.) of 65mm**, it perfectly fits the headpipe flange, while its **outer diameter (O.D.) of 78.5mm** (including the 1/2mm wall thickness) guarantees a snug, interference-free installation that resists flexing and wear over time. The gasket s **19mm thickness** provides ample cushioning to absorb engine vibrations, improving ride comfort and reducing stress on the headpipe connection critical for long-term performance in rough terrain. Ideal for both stock and modified applications, this gasket is compatible with aftermarket exhaust systems and performance upgrades, making it a versatile choice for riders seeking reliability without compromising power or handling. Built to withstand extreme temperatures and aggressive use, it s a must-have replacement for any Polaris owner looking to maintain a leak-free, smooth-running engine while extending the lifespan of their vehicle s critical components.

### **Pros and Cons of buying a 4342-S336525-22 SPI Headpipe Gasket (65mm ID x 78.5mm OD x 19mm Thickness) for a 2011-2013 Polaris**

1. **OEM Fitment and Reliability** This gasket is a genuine or high-quality aftermarket replacement designed specifically for your Polaris model. It ensures proper sealing, reducing the risk of oil leaks or compression loss, which can improve engine longevity and performance.

2. **Prevents Leaks and Contamination** A worn or damaged headpipe gasket can allow oil, coolant, or combustion gases to mix, leading to engine damage. A new gasket ensures a tight seal, maintaining proper lubrication and preventing costly internal issues.

3. **Easy Installation** The gasket is designed to fit standard headpipe configurations on your Polaris, and with the correct tools (like a torque wrench), installation is straightforward. Many users report minimal hassle compared to more complex engine rebuilds.

4. **Cost-Effective Maintenance** Replacing a gasket is significantly cheaper than dealing with engine failure caused by leaks or compression problems. It s a preventive measure that extends the life of your engine without major expense.

5. **Compatibility with Common Mods** If you ve modified your Polaris (e.g., upgraded exhaust, intake, or tuned the engine), a fresh gasket ensures that modifications perform optimally without leaks compromising their effectiveness.

6. **Durability of SPI Materials** SPI (Specialty Products International) is known for high-quality gaskets made from durable materials like silicone or nitrile rubber, which resist heat, oil, and vibration better than cheaper alternatives.

7. **Accessibility of Parts** This gasket is widely available through Polaris dealers, online retailers (like Amazon, RockAuto, or SPI s website), and specialty motorcycle parts stores, making it easy to source.

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1. **Potential for Over-Tightening** If not installed correctly, the gasket can be crushed or damaged if the headpipe or cylinder head is overtightened. This can lead to leaks or warping over time. Always follow the manufacturer s torque specifications.

2. **Requires Basic Mechanical Skill** While not extremely difficult, removing the old gasket and installing the new one may require some disassembly (e.g., removing the cylinder head or exhaust manifold). If you re not comfortable with basic engine work, you may need to pay a mechanic, adding to the cost.

3. **Risk of Improper Alignment** If the gasket is not centered or seated correctly, it may not seal properly, leading to leaks. Ensuring the mating surfaces are clean and free of debris is critical.

4. **Limited Lifespan Under Extreme Conditions** While SPI gaskets are durable, they are not indestructible. If your Polaris is used aggressively (e.g., heavy off-roading, high RPMs, or extreme temperatures), the gasket may wear out faster than expected. Regular inspections are recommended.

5. **Cost Compared to DIY Alternatives** While not extremely expensive (typically $20 $50 depending on the source), the cost adds up if you need additional parts (e.g., new bolts, gasket maker, or cleaning solvents) or labor if you hire a mechanic.

6. **Potential for Counterfeit Products** Buying from untrusted sellers (especially online marketplaces) could result in a knockoff gasket that doesn t fit properly or lasts as long. Always purchase from reputable sources.

7. **Time-Consuming if Part of a Larger Project** If you re also replacing other components (e.g., exhaust, intake, or spark plugs), the gasket replacement adds to the total time and effort required for the job.

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The **4342-S336525-22 SPI headpipe gasket** is a **highly recommended** replacement for your 2011 2013 Polaris, especially if you re experiencing leaks, compression loss, or plan to perform engine-related modifications. Its **OEM-like quality, durability, and ease of installation** make it a worthwhile investment for maintaining engine health and performance.

**However**, the decision to buy it depends on your **mechanical comfort level** and whether you re addressing a **specific issue** (e.g., oil leaks) or performing **preventive maintenance**. If you re not confident in your ability to install it correctly, consulting a mechanic may be advisable to avoid costly mistakes.

For most riders, the **pros outweigh the cons**, making this gasket a **solid choice** for reliable operation and long-term engine protection.

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- You re experiencing leaks or suspect gasket failure.

- You re performing a related engine service (e.g., valve adjustment, exhaust swap).

- You re comfortable with basic engine work or have access to a mechanic.

- You re unsure about installation and don t want to risk damaging the headpipe or cylinder head.

- You find a significantly cheaper alternative from a trusted brand (though quality may vary).

- Your Polaris is already showing signs of more serious engine issues (e.g., compression loss, excessive oil consumption), which may require a full head gasket replacement rather than just the headpipe gasket.

**Best Practice:** Always pair the gasket replacement with a **thorough inspection** of the headpipe, cylinder head bolts, and surrounding components to ensure no other issues exist. Use **gasket maker** (like Permatex 2215) on the new gasket for extra sealing, and **torque bolts to specification** to avoid damage.

Details:

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: Sports Parts Inc, model Number: 4342-S336525-22. This is helpful if you are buying multiple items.

Compatibility: Years: Make: model: Application: Notes: 2011 - 2016 Polaris800 RMK Assault 155 For most Polaris model's, 09-13, 2014 Polaris800 LE INDY SP PRO-RMK 2013 Polaris800 Rush 2015 PRO-X 2016 3in. For most Polaris model's, 09-13, 2011 - 2014 Polaris800 Rush PRO-R 2016 Polaris800 RMK 155 2016 PRO-S LE 2012 2015 Switchback 09-13.

part #: 4342s33652522 prices

• $17.04-$19.59

specifications exhaustsnowmobilee:

• for makes: Polaris
• for years: 2011-2013
• brand: Sports Parts Inc
• mpn: 4342-s336525-22

general exhaustsnowmobilee:

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

returns exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• quantity: 7
• options: Ship-to-home
• started: May 3, 2026
• sold: 0
• availability: In Stock

seller exhaustsnowmobilee:

• city: Indiana, US
• rating: 99.9%
• # reviews: 84461

payments exhaustsnowmobilee:

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

shipping exhaustsnowmobilee:

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

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