YAMAHA 1LX-000318 Upper Bottom Motor Half Jug

( Manufacturer Part Number: 1LX-000318 ), ( Engine Type: 2-stroke ), ( Type: Crankcase ), ( Machine Type: Off-road Motorcycle ), ( Material: Aluminum ), ( Vintage Part: Yes ), ( Performance Part: No )

Review YAMAHA Motor Complete Working Bottom Half Without Upper Jug fits 125S YZ 125 1987

The Yamaha YZ 125 motor bottom half upper jug is a crucial component of the two-stroke engine found in the 1987 Yamaha YZ 125 motorcycle. This part is specifically designed to house the transfer port and the crankcase breather. It is precision-engineered to provide optimal engine performance and reliability.

The upper jug is manufactured using high-quality aluminum alloy, ensuring lightweight yet robust construction. Its smooth, polished finish not only looks great but also helps reduce friction and improve engine efficiency. The jug features multiple drillings for the transfer ports, which facilitate the transfer of oil mixture from the crankcase to the cylinder for efficient lubrication of the piston and rings.

Moreover, the motor bottom half upper jug for the Yamaha YZ 125 comes with an integrated crankcase breather. This feature allows the escape of excess gases from the crankcase, maintaining the proper crankcase pressure and preventing any potential damage to the engine. The breather design is thoughtfully engineered to minimize the intake of contaminants, ensuring a cleaner and more efficient engine operation.

This Yamaha motor part is a direct OEM replacement, meaning it is a perfect fit and functionally identical to the original equipment. It comes with all the necessary hardware for installation, ensuring a seamless and hassle-free replacement process. Installing this upper jug not only helps keep your 1987 Yamaha YZ 125 motorcycle running smoothly but also adds to its overall aesthetic appeal.

In summary, the Yamaha 1LX-000318 motor bottom half upper jug for the 1987 Yamaha YZ 125 is a crucial engine component designed to provide optimal performance and reliability. Its high-quality aluminum construction, integrated crankcase breather, and direct OEM fit make it an essential part for any Yamaha YZ 125 enthusiast looking to keep their motorcycle in top shape.

Buying a used Yamaha YZ 125 motor bottom half upper jug (part number 1LX-000318) can be a cost-effective solution for those looking to repair or rebuild their motorcycle. However, it comes with some pros and cons.

1. Cost-effective: Buying a used motor bottom half can save a significant amount of money compared to buying a new one or even a complete rebuilt motor.

2. Availability: These parts are widely available in the aftermarket, and you can easily find one through various online marketplaces or local motorcycle shops.

3. Easy installation: Installing a used motor bottom half is relatively straightforward and can be done by most DIYers with basic mechanical skills.

1. Unknown condition: Since it's a used part, you don't have any guarantees about its condition or history. It could have hidden damage that may not be apparent at first.

2. Compatibility issues: There's a possibility that the used motor bottom half may not be an exact match to your bike, especially if it's from a different year or model, which could lead to additional costs and time spent on modifications.

3. Inconvenience: Buying a used motor bottom half means that you'll have to wait until you find a suitable one, which could take some time.

Buying a used Yamaha YZ 125 motor bottom half upper jug (part number 1LX-000318) can be a cost-effective solution for those looking to repair or rebuild their motorcycle. However, it comes with some risks and potential complications. If you're confident in your mechanical skills and willing to take the risk, then buying a used motor bottom half could be a good option. Alternatively, you could consider buying a rebuilt motor or a new one if you have the budget and want peace of mind. Ultimately, the decision comes down to your budget, mechanical skills, and time constraints.

Details:

The product is a complete working bottom half of 1987 Yamaha YZ 125S motor, Made aluminum, this vintage part suitable for off-road motorcycles.

part #: 1lx000318 price

• $1600.00

specifications cylindermotorcycleiz:

• for models: 125s, Yz, 125
• for makes: Yamaha
• for years: 1987
• mpn: 1lx-000318
• engine type: 2-stroke
• type: Crankcase
• machine type: Off-road Motorcycle
• material: Aluminum
• vintage part: Yes
• performance part: No

returns cylindermotorcycleiz:

• policy: No Returns

general cylindermotorcycleiz:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

offer cylindermotorcycleiz:

• quantity: 1
• sold: 0
• started: October 29, 2025
• options: Ship-to-home
• availability: In Stock

payments cylindermotorcycleiz:

• wallet: Paypal
• credit card: Diners-club
• other

shipping cylindermotorcycleiz:

• cost: $33.41
• carrier: UPS
• transit: 4-10 Days
• class: Standard
• type: Calculated
• service: UPS Ground

seller cylindermotorcycleiz:

• rating: 0.0%
• city: South Bend, Indiana
• # reviews: 4

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