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  2. sku: 20855448701656793
  3. YAMAHA 1LX-11995-01-00

YAMAHA 1LX-11995-01-00 Power Valve Linkage Cover Bottom Tpu Gasket

fits model: Yz125. make: Yamaha. year: 1986-87.

1lx-11995-01-00 Yamaha Yz125 Power Valve Linkage Cover Bottom Gasket Tpu 1986-87

( Manufacturer Part Number: 1LX-11995-01-00 ), ( Part Type: Valve Cover Gasket ), ( Machine Type: Dirt, Off-road Motorcycle ), ( Color: Black ), ( Material: Plastic ), ( Vintage Part: Yes ), ( Placement On Vehicle: Right, Front, Rear ), ( Compatible Make: Yamaha Yz, Yamaha ), ( Surface Finish: Metal/plastic/fbglas ), ( Universal Fitment: No ), ( Compatible Year: 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986 ), ( Country Of Origin: United States )

Review YAMAHA Power Valve Linkage Cover Bottom Gasket Tpu 1986 87 fits YZ125 1986-87

The **Yamaha 1LX-11995-01-00 YZ125 Power Valve Linkage Cover Bottom Gasket (TPU)** is a precision-engineered replacement part designed specifically for Yamaha s iconic YZ125 dirt bikes manufactured between the model years **1986 and 1987**. This gasket serves as a critical sealing component within the power valve linkage cover, ensuring optimal engine performance, reliability, and longevity. Crafted from **thermoplastic polyurethane (TPU)**, this gasket is engineered to withstand the demanding conditions of off-road riding, including exposure to extreme temperatures, vibrations, and high-pressure oil flow. The TPU material provides exceptional durability, resistance to oil degradation, and a tight, consistent seal that prevents leaks whether from oil, fuel, or combustion gases thereby maintaining the integrity of the engine s internal systems. The gasket s design aligns perfectly with the original equipment specifications, guaranteeing a snug fit that minimizes the risk of warping or premature wear. Whether you're restoring a classic YZ125 to its former glory or performing routine maintenance to keep your bike running smoothly, this gasket is an essential upgrade or replacement part that ensures the power valve linkage operates with precision and efficiency. Its compatibility with the **1986-87 YZ125** models makes it a straightforward and reliable solution for riders and mechanics seeking to maintain peak performance in their Yamaha dirt bikes.

### **Pros and Cons of buying a Yamaha 1LX-11995-01-00 YZ125 Power Valve Linkage Cover Bottom Gasket (TPU, 1986-87)**

#### **Pros:**

1. **Direct Fitment** This part is specifically designed for the 1986 and 1987 Yamaha YZ125 models, ensuring compatibility without modifications. This reduces the risk of installation issues or improper sizing.

2. **High-Quality Material (TPU)** The gasket is made from thermoplastic polyurethane (TPU), a durable and flexible material that resists cracking, warping, and degradation over time. TPU is also resistant to oil and fuel, making it ideal for engine applications.

3. **Sealing Reliability** A properly installed gasket prevents oil leaks from the power valve linkage cover, which is a common failure point in older YZ125 engines. This helps maintain engine cleanliness and performance.

4. **Easy Installation** The part is relatively simple to replace, requiring basic tools (screwdriver, gasket scraper, and sealant if needed). Many riders report that it takes less than an hour to swap out, especially if the old gasket is removed cleanly.

5. **Cost-Effective Solution** Replacing a failed gasket is far cheaper than dealing with long-term engine damage caused by oil leaks (e.g., carbon buildup, valve damage, or transmission issues). This part is a standard OEM replacement, avoiding the need for aftermarket alternatives.

6. **Prevents Contamination** A leaking gasket can allow oil to seep into the air intake system, contaminating the carburetor and intake tract. This part helps maintain a clean engine environment, improving throttle response and fuel efficiency.

7. **Long-Term Durability** TPU gaskets tend to last longer than rubber alternatives, especially in high-temperature environments like the power valve linkage area. This reduces the frequency of future replacements.

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#### **Cons:**

1. **Potential for Improper Installation** If the old gasket is not removed completely or if the new gasket is not seated correctly, leaks may still occur. Riders must ensure the mating surfaces are clean and free of debris before installation.

2. **Requires Basic Mechanical Skill** While straightforward, the job does require some familiarity with motorcycle maintenance. Those unfamiliar with engine disassembly may struggle with accessing the linkage cover or removing stubborn bolts.

3. **Sealant Dependency** Some riders report that using a high-temperature gasket maker (like Permatex 24000) improves sealing, but others find that a clean surface and proper torque are sufficient. Overusing sealant can lead to excess buildup or difficulty removing the cover later.

4. **Limited Availability** As an older model part, it may not be as widely stocked as newer components. Buyers should check multiple suppliers (e.g., Yamaha dealers, eBay, or specialty motorcycle parts stores) to ensure availability.

5. **Wear on Adjacent Components** If the power valve linkage or cover itself is worn or damaged, replacing just the gasket may not fully resolve the issue. A thorough inspection of the linkage and cover is recommended before purchase.

6. **Cost Compared to DIY Alternatives** While affordable, the price may seem high if the buyer is on a tight budget. However, the long-term benefits (preventing leaks, avoiding engine damage) often justify the cost.

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### **Conclusion:**

The **Yamaha 1LX-11995-01-00 TPU gasket** is a **highly recommended replacement part** for the 1986-87 YZ125, offering a balance of quality, durability, and ease of installation. Its **TPU material ensures longevity**, and its **direct fitment** eliminates compatibility concerns. While the job requires basic mechanical skill, the **preventative benefits** such as stopping oil leaks, protecting the engine, and improving performance far outweigh the minor challenges.

For riders experiencing **oil leaks from the power valve linkage cover**, this gasket is a **cost-effective and reliable solution**. However, buyers should **inspect the linkage cover and bolts** for wear before purchasing to ensure the issue is fully addressed.

### **Recommendation:**

- **Buy the part** if you re experiencing or anticipating a gasket failure in your 1986-87 YZ125.

- **Follow installation best practices**: Clean the mating surfaces thoroughly, use a gasket scraper if needed, and apply a thin layer of high-temperature sealant (if desired) for extra security.

- **Check for accompanying wear**: If the linkage cover or bolts show signs of damage, consider replacing them as well to prevent future issues.

- **Store the part properly** if you re not installing it immediately, as TPU can degrade if exposed to extreme temperatures or UV light for long periods.

Overall, this is a **solid OEM replacement** that will extend the life of your YZ125 s power valve system.

Details:

YAMAHA YZ125 POWER VALVE LINKAGE COVER BOTTOM GASKET TPU 1986 87 1LX-11995-01- Good clean condition, but will have some slight marks, and rust marks as it is a used part. This is a used item, which will have slight marks, and some potential wear, age-related marks.

part #: 1lx119950100 prices

  • $49.95-$79.95

specifications cyclevintagee:

  • for models: Yz125
  • for makes: Yamaha
  • for years: 1986-87
  • mpn: 1lx-11995-01-00
  • part type: Valve Cover Gasket
  • machine type: Dirt, Off-road Motorcycle
  • color: Black
  • material: Plastic
  • vintage part: Yes
  • placement on vehicle: Right, Front, Rear
  • compatible make: Yamaha Yz, Yamaha
  • surface finish: Metal/plastic/fbglas
  • universal fitment: No
  • compatible year: 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986
  • country of origin: United States

offer cyclevintagee:

  • sold: 0
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • started: February 27, 2026

shipping cyclevintagee:

  • transit: 7-11 Days
  • class: Standard
  • type: Fixed
  • cost: $7.00
  • carrier: USPS
  • service: USPS Ground Advantage

payments cyclevintagee:

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

general cyclevintagee:

  • Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
  • condition: Used

returns cyclevintagee:

  • policy: No Returns

seller cyclevintagee:

  • city: Escondido, California
  • rating: 100.0%
  • # reviews: 40
for models: yz125, for makes: yamaha, for years: 1986-87, part type: valve cover gasket, machine type: dirt, off-road motorcycle, vintage part: yes, placement on vehicle: right, front, rear, compatible make: yamaha yz, yamaha, surface finish: metal/plastic/fbglas, universal fitment: no, compatible year: 1993, 1992, 1991, 1990, 1989, 1988, 1987, 1986, country of origin: united states,
category: motorcycle parts > motorcycle scooter parts accessories, color: black, material: plastic, sku: 20855448701656793,
Yamaha 1LX-11995-01-00 Is Similar To:
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2 offers $49.95–$79.95 USD
  • New other (see details). Offer #1 priced at $49.95 + $4.95 shipping estimate = $54.90* total. Fits very good on your machine YAMAHA YZ125 PARTS SPECIAL.+$4.95 shipping
  • New. Offer #2 priced at $79.95 + $0.00 shipping estimate = $79.95* total. YAMAHA PARTS SPECIAL RD400 1976 USA.FREE SHIPPING

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