Exhaust Muffler Gasket Nos P420830985

( Brand: Aftermarket ), ( Manufacturer Part Number: 420830985 ), ( Part Type: Gasket Exhaust Muffler )

Review AFTERMARKET Exhaust Muffler Gasket Nos

The **420830985 P420830985 Exhaust Muffler Gasket (NOS)** is a high-quality, original equipment manufacturer (OEM) replacement part designed specifically for vehicles equipped with the P420830985 exhaust system configuration. This gasket serves as a critical sealing component between the muffler and the exhaust pipe or tailpipe assembly, ensuring a tight, leak-free connection that prevents exhaust gases from escaping into the surrounding environment. Crafted from durable, heat-resistant materials typically a combination of reinforced rubber, silicone, or high-temperature elastomers this gasket is engineered to withstand the extreme conditions of the exhaust system, including high temperatures, vibrations, and constant exposure to corrosive fumes. Its precise fitment is tailored to the exact dimensions of the original equipment, guaranteeing a perfect alignment with the flanges of the muffler and exhaust pipe, which minimizes the risk of misalignment or improper sealing that could lead to exhaust leaks, reduced performance, or even damage to the catalytic converter or other downstream components. The gasket s design often incorporates a layered construction with metal reinforcement or specialized adhesive coatings to enhance durability and longevity, ensuring it remains effective over thousands of miles of use. Whether installed during routine maintenance, as part of a muffler replacement, or to address a failing gasket that has caused rattling noises or a noticeable drop in engine efficiency, this NOS (New Old Stock) gasket provides a reliable, factory-spec solution that restores the exhaust system s integrity and functionality. Its availability as a genuine OEM part further ensures compatibility with the vehicle s original specifications, reducing the likelihood of fitment issues or the need for additional modifications.

### **Pros and Cons of buying a Exhaust Muffler Gasket (Part Number: 420830985 / P420830985) for a NOS Vehicle**

1. **OEM Compatibility** This part is likely designed as an original equipment manufacturer (OEM) replacement, meaning it should fit perfectly without modifications. This reduces the risk of installation issues and ensures proper sealing.

2. **Durability** NOS (New Old Stock) parts are often sourced from high-quality manufacturers or reconditioned from older inventory, which can mean better materials and construction compared to aftermarket alternatives.

3. **Reliability** Since it s a direct replacement, it should perform similarly to the original gasket, reducing the likelihood of leaks, rattles, or premature failure.

4. **Warranty Coverage** NOS parts may come with warranties or return policies, providing some assurance against defects or installation problems.

5. **Easier Availability** Compared to rare or discontinued aftermarket parts, NOS gaskets are often easier to source, especially if the vehicle model is older or less common.

6. **Potential for Better Sound and Performance** If the original gasket was failing, replacing it with a NOS part could restore proper exhaust flow, improving engine performance and reducing exhaust noise.

7. **Aesthetic Consistency** If you value originality, a NOS gasket will match the factory look of your vehicle, which may be important for classic or show cars.

---

1. **Higher Cost** NOS parts are generally more expensive than aftermarket alternatives due to their perceived quality and direct sourcing. This could be a significant investment if multiple gaskets are needed.

2. **Limited Customization** Unlike aftermarket options, NOS gaskets do not offer performance upgrades (e.g., heat resistance, sound modification, or flow improvements). If you re tuning the exhaust system, this may not be ideal.

3. **Potential for Counterfeit Parts** Since NOS parts are often sold online, there s a risk of receiving fakes or mislabeled items, especially from unverified sellers. Always verify the supplier s reputation.

4. **Longer Lead Times** NOS inventory may be limited, leading to longer shipping times compared to widely stocked aftermarket parts.

5. **Overkill for Minor Issues** If the gasket failure is isolated to a small section (e.g., a cracked edge), a NOS replacement might be more than necessary, and a cheaper aftermarket or DIY fix could suffice.

6. **No Performance Benefits** Unlike aftermarket gaskets designed for high-performance engines, a NOS gasket won t provide any additional heat resistance or durability benefits beyond the original specification.

7. **Installation Complexity** Some NOS parts may require professional installation, especially if they involve complex sealing or alignment with exhaust components. Improper installation could lead to leaks or damage.

---

Buying the **420830985 / P420830985 NOS exhaust muffler gasket** is a solid choice if you prioritize **OEM compatibility, reliability, and originality** for your vehicle. It s particularly well-suited for owners who:

- Want to restore factory specifications.

- Are working on a classic or high-value car where authenticity matters.

- Need a trusted replacement without compromising on fit or performance.

However, if **cost, performance upgrades, or convenience** are your main concerns, aftermarket alternatives (from reputable brands like Fel-Pro, Duralast, or Melling) may offer better value. Aftermarket gaskets often provide similar durability at a lower price and sometimes include additional features like heat shields or improved sealing compounds.

- You re restoring a classic or NOS vehicle and want genuine parts.

- You ve verified the seller s authenticity (e.g., through trusted dealers or verified NOS suppliers).

- Budget is not a major concern, and you value OEM quality.

- You re on a budget and need a cost-effective alternative.

- You re modifying the exhaust system and want performance-enhancing options.

- You can t find the NOS part quickly or affordably.

**Final Tip:** Always inspect the gasket for quality upon receipt (check for proper materials, no defects, and correct dimensions). If possible, compare it to the original gasket in your vehicle to ensure a perfect fit. For complex installations, consult a professional mechanic to avoid mistakes.

Details:

All parts are in stock and ready to ship. Exhaust Muffler Gasket is new and in good condition, not original packaging. Items are shipped using USPS, UPS, and FedEx. Aftermarket 420830985, P420830985 Exhaust Muffler Gasket NOS.

If the original package is included it may show signs of wear.

part #: 420830985 prices

• $6.35-$11.88

specifications exhaustsnowmobilee:

• brand: Aftermarket
• mpn: 420830985
• part type: Gasket Exhaust Muffler

returns exhaustsnowmobilee:

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

shipping exhaustsnowmobilee:

• cost: $0.00
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail Flat Rate Envelope, UPS Next Day Air, UPS 2nd Day Air
• class: Standard, Expedited, One-day
• carrier: USPS, UPS
• transit: 4-9 Days

payments exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• sold: 0
• options: Ship-to-home
• best offers: True
• started: February 16, 2026
• quantity: 8
• availability: In Stock

seller exhaustsnowmobilee:

• rating: 99.9%
• city: Ashaway, Rhode Island
• # reviews: 127440

general exhaustsnowmobilee:

• condition: New other see details
• Parts Accessories > Snowmobile Parts > Exhaust

Aftermarket 420830985 Is Similar To:

• 09-232 Unkown Yamaha Srx Exhaust Can Silencer Aftermarket Muffler (30.6% similar) Aftermarket silencer, removed from a 2001 STX 7 brand is unknown, there part on the side, it has surface rust, and some melted plastic but would clean up will fit ,700...(January 17th, 2019)
• 090-8781-103 Slp Polaris Rmk Aftermarket Exhaust Pipe Expansion Chamber (33.8% similar) This item works well. This item does not have any cracks. The y pipe has been drilled for a get system. Removed from: 2009 Polaris Mk 800 please review all pictures to assess the condition of item. This item is straight...(October 2nd, 2018)
• 090-8781-911 Polaris Rmk Aftermarket Slp Exhaust System Pipe Can (39% similar) Pipe part number or it is a with small mechanical problem but still usable. It is still a usable part. Exhaust can has some dent on bottom of outlet. Domestic shipping it includes everything pictured. They have some scratches and wear marks. We most often are able to combine shipping if multiple ...(April 4th, 2018)
• 090-8782-98 Slp Polaris Rmk Iq Aftermarket Exhaust Can Muffler (44.6% similar) This item is straight. This item does not have any leaks. This item works well. There are two repaired welded spots removed from: 2009 Polaris Mk 800 please review all pictures to assess the condition of item...(October 15th, 2018)
• 105-278 Slp Polaris Rmk Muffler Silencer Can Exhaust Aftermarket (17.9% similar) Or it is a part with small mechanical problem but still usable. It all depends on the size and weight of items. Good: this is a used part that in good working order fairly but has larger amount of cosmetic damage. It does not have any cracks or leaks. It works well. It may have some surface ...(May 1st, 2018)
• 1210305 Aftermarket Summit Highmark Exhaust Can Muffler (50.9% similar) This item is straight. This item does not have any cracks. This item works well. This item does not have any leaks...(January 8th, 2019)
• 16-3514 Dg Arctic Cat Ext Efi New Aftermarket Performance Exhaust System (36.6% similar) Palatine, IL phone: or. Up for sale is a brand new dag Aftermarket performance exhaust system all 1992 to 93 arctic cat ext 550 efi snowmobiles...(September 7th, 2018)
• 7183 Slp Polaris Rmk Muffler Silencer Can Exhaust Aftermarket (18.3% similar) We most often are able to combine shipping if multiple items purchased. It all depends on the size and weight of items. Good: this is a used part that in good working order. It may have some surface scratches, but no mechanical problems. It is still a usable part. Slap ratings for item condition ...(May 3rd, 2018)
• 8v0-14710-04-00 Dg Performance Yamaha Phazer Pz Exhaust Pipe Aftermarket (16.8% similar) This item is in good condition. Ratings for item condition excellent: this is a new part that still in the package and perfect. It may have some surface scratches, but no mechanical problems. Or it is a part with small mechanical problem but still usable. It includes everything pictured. It is still...(February 27th, 2018)
• P2890 Dyno Port Polaris Rush Muffler Silencer Can Exhaust Aftermarket (17.2% similar) The P2890 from Dino port web site: 800 rush-Mk big core barker ceramic price: Polaris rush muffler silencer can exhaust Aftermarket. Condition is used. 95 exhaust down port is bent as seen in pic. Pulled from a 2012 Polaris rush pro r le 800 has P2890 written in marker on the mount...(August 3rd, 2020)
• Ski Doo 514053322 2002 Ski-doo Mxz 700 Aftermarket Muffler Exhaust Silencer Can (38.6% similar) Or it is a part with small mechanical problem but still usable. It all depends on the size and weight of items. It still appears to have some leaks. Excellent: this is a new part that still in the package and perfect condition. It only includes what is pictured. Ratings for item condition. It has ...(August 7th, 2023)