YAMAHA 4JH-15431-00-00 Cover Crankcase

( Manufacturer Part Number: 4JH-15431-00-00 ), ( Part Type: Cover )

Review YAMAHA Cover Crankcase

The **Yamaha 4JH-15431-00-00 Cover Crankcase** is a meticulously engineered, high-performance component designed specifically for Yamaha s outboard motors, ensuring optimal protection, durability, and functionality for marine applications. Crafted from premium materials, this crankcase cover is built to withstand the harshest conditions encountered on the water, from saltwater corrosion and UV exposure to mechanical stress from frequent use. The cover features a robust, seamless construction that minimizes the risk of leaks, maintaining the integrity of the engine s internal systems while reducing maintenance demands. Its precise fitment is achieved through Yamaha s proprietary engineering, ensuring a snug seal that prevents water ingress and preserves the motor s efficiency. The design incorporates strategic ventilation ports to regulate internal temperatures, preventing overheating and prolonging the lifespan of critical components like the crankshaft and bearings. Whether installed on a compact 4-stroke outboard or a larger marine engine, this crankcase cover exemplifies Yamaha s commitment to reliability and performance, offering boat owners a durable, long-lasting solution that complements the overall robustness of their Yamaha outboard. Its compatibility with select Yamaha models makes it an essential replacement part for those seeking to restore or upgrade their engine s protective housing without compromising on quality.

### **Pros and Cons of buying a Yamaha 4JH-15431-00-00 Cover (Crankcase Cover)**

1. **Authentic Fit and Finish** This is an original Yamaha replacement part, meaning it is designed to match the exact specifications of the original crankcase cover. It ensures a proper seal, preventing oil leaks and maintaining engine efficiency.

2. **Durability and Quality** Yamaha parts are known for their robustness and longevity. The crankcase cover is made from high-quality materials, reducing the risk of warping or cracking over time, especially in high-performance or off-road applications.

3. **Easy Installation** As a direct replacement, it should fit seamlessly without requiring modifications. The gaskets and mounting points are designed to align correctly with the engine block, simplifying the replacement process.

4. **Compatibility with Aftermarket Mods** If you plan to modify your engine (e.g., forced induction, porting, or tuning), an OEM crankcase cover ensures structural integrity, preventing issues like oil leaks or warping that could arise from using an aftermarket part that may not be as precisely engineered.

5. **Warranty and Reliability** Purchasing from Yamaha or an authorized dealer often comes with warranty coverage, providing peace of mind in case of defects. This is particularly useful if the part fails prematurely due to manufacturing issues.

6. **Resale Value** Keeping the bike with OEM parts can help maintain its resale value, as buyers often prefer fully stock or easily replaceable components.

7. **Accessibility of Parts** Yamaha has a widespread parts distribution network, making it easier to find replacements if needed in the future, whether for maintenance or repairs.

---

1. **Higher Cost Compared to Aftermarket Alternatives** OEM parts from Yamaha are typically more expensive than generic or third-party replacements. If budget is a concern, aftermarket options (e.g., from brands like ATS, DID, or local manufacturers) may offer similar performance at a lower price.

2. **Limited Customization** Unlike aftermarket parts, the OEM crankcase cover does not offer design variations (e.g., different colors, styles, or performance-enhancing features). If aesthetics or unique modifications are a priority, aftermarket options might be preferable.

3. **Potential for Overkill** For bikes that are rarely used or in low-stress applications, an OEM part may be more than necessary. In such cases, a budget-friendly aftermarket part could suffice without compromising performance.

4. **Longer Lead Times** Depending on the dealer or region, OEM parts may take longer to arrive compared to aftermarket options, which are often stocked in larger quantities.

5. **No Additional Features** The OEM cover does not include extras like reinforced gaskets, heat-resistant coatings, or other performance upgrades that some aftermarket manufacturers offer.

---

The Yamaha 4JH-15431-00-00 crankcase cover is an excellent choice if you prioritize **reliability, authenticity, and long-term durability**. It is ideal for riders who want to maintain their bike s original integrity, avoid potential compatibility issues with aftermarket parts, or ensure a perfect fit for modifications. The investment in quality is justified for those who value performance, longevity, and ease of maintenance.

However, if **cost is a significant factor** or if you are open to aftermarket alternatives without sacrificing quality, third-party options could be a viable substitute. Aftermarket parts can offer similar performance at a lower price, though it s crucial to verify reviews and compatibility before purchasing.

- You want the best fit and seal for your engine.

- You plan to modify the bike and need a part that won t warp or leak.

- You prefer the peace of mind that comes with a brand-name, warrantied component.

- Your budget allows for the higher upfront cost.

- You are on a tight budget and can find a reputable brand with good reviews.

- You are not planning extensive modifications and want to save money.

- You prioritize aesthetics or unique design options over OEM specifications.

Ultimately, weigh your priorities whether it s performance, cost, or convenience to make the best decision for your specific needs.

Details:

Doesn appear to have been used. YZF600R 1995 -2007. Customer return.

part #: 4jh154310000 prices

• $14.62-$69.99

specifications cyclevintagee:

• for makes: Yamaha
• mpn: 4jh-15431-00-00
• part type: Cover

shipping cyclevintagee:

• class: Standard
• carrier: USPS
• service: USPS First Class
• type: Fixed
• cost: $0.00
• transit: 4-7 Days

returns cyclevintagee:

• policy: No Returns

offer cyclevintagee:

• started: March 12, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock

general cyclevintagee:

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

seller cyclevintagee:

• rating: 99.8%
• # reviews: 14191
• city: Phoenix, Arizona

payments cyclevintagee:

• wallet: Paypal
• credit card: Visa
• other

Yamaha 4JH-15431-00-00 Is Similar To:

• 05-1221 Cobra Yamaha Racing Reservoir Cover Fluted Royal Star New (30.5% similar) ...(September 17th, 2018)
• 122-15411-00-00 Yamaha Yg1 Left Crankcase (56.8% similar) Yamaha YGS1 1966 , YG1F, YG1F-D 1969 nos...(December 25th, 2017)
• 132-15416-00 Yamaha Genuine Oil Pump Cover (31.7% similar) Part 00PART cover,oil pump model count 4AS2C AS2C street scrambler YAS1C 125 twin scrambler YL1 jet 100 YL1E Electra sierra...(May 24th, 2018)
• 14t-21714-00-00 Yamaha Nos Side Cover (39% similar) ...(November 14th, 2017)
• 156-15415-00 Yamaha Nos Crankcase Cover (48.1% similar) New old stock. Has some shelf wear,light scratches. Look at pictures closely...(January 25th, 2018)
• 15a-15451-00 Yamaha Nos Left Stator Crank Case Cover Gasket (40.4% similar) Part may fit other model's...(January 27th, 2019)
• 161-15426-00-00 Yamaha Nos Pump Unit Cover (39% similar) This sale is for one yamaha pump cover 17 available that fits the following model's: assemblies where USED1964 TD1B - crankcase and CYLINDER1969 DT1B COVER1969 DT1S COVER1970 DT1C DT1CMX RT1 RT1M COVER1971 DT1E DT1MX RT1B RT1MX COVER1972 TD3 oil PUMP1972 TR3 PUMP1973 TZ250 PUMP1974 TA125A TZ350 ...(March 10th, 2018)
• 168-27433-10 Yamaha Nos Footrest Cover (33.3% similar) ...(November 7th, 2017)
• 174-15416-00-00 Nos Yamaha Oem Oil Pump Cover Ycs (47.2% similar) Yamaha oem oil pump cover CS3 Cs nos item is new old stock...(August 14th, 2018)
• 18g-15451-03 Yamaha Nos Clutch Cover (36.8% similar) ...(October 25th, 2017)
• 1aa-11193-00-00 1aa-11193-01-00 Yamaha Fz Xj Fzr Head Cover Gasket Nos Oem (37.9% similar) Any questions. They may not be clean. They will not look like new parts. Sometimes calculated shipping can be high and needs to adjusted. If you see something we missed or is incorrect in the please. Shipping domestic. They may have some dents, scratches, cracks and or missing pieces. 1 mile south ...(October 17th, 2018)