MHMOTO MHQP-2538 Screw Cap Cylinder Seal Outboard 1PC 64E-43821-01-00 115-250HP

( Brand: Mhmoto ), ( Manufacturer Part Number: MHQP-2538 ), ( Type: Screw End With Seals Tilt And Trim ), ( Oem: 64e-43821-01-00, Fsm023, 48630-96j00 ), ( Fitment: For 115-250hp Honda/suzuki/yamaha 2 4 Stroke Engines ), ( Material: Aluminum Alloy ), ( Warranty: 1 Year )

Review MHMOTO 1pc Screw Trim Cap Cylinder Seal Yamaha 115-250hp Outboard

The **MhMoto MHQP-2538 (64E-43821-01-00) Screw Cap Cylinder Seal** is a precision-engineered replacement part specifically designed to restore optimal performance and longevity to Yamaha outboard motors ranging from **115 to 250 horsepower**. This high-quality seal is crafted from durable **nitrile rubber (NBR)**, a material renowned for its exceptional resistance to oil, fuel, and water, ensuring reliable operation even under demanding marine conditions. The screw cap design allows for easy installation and removal, making maintenance straightforward for both professional mechanics and DIY enthusiasts. Engineered to fit seamlessly within Yamaha s cylinder head assembly, this seal creates an airtight barrier that prevents compression loss, coolant leakage, and excessive wear on critical engine components. Its robust construction minimizes the risk of premature failure, helping to maintain engine efficiency and prevent costly repairs over time. Whether used in recreational fishing boats, speedboats, or offshore vessels, this seal is a critical component for preserving the performance and reliability of Yamaha s mid-sized outboard engines. With its precise fit and long-lasting durability, the **MHQP-2538** is an essential upgrade for anyone seeking to extend the life of their Yamaha outboard motor while ensuring smooth, trouble-free operation.

**Pros and Cons of buying a MHMoto MHQP-2538 (64E-43821-01-00) Screw Cap Cylinder Seal for Yamaha 115 250HP Outboards**

### **Pros**

1. **OEM Compatibility** This part is designed as an original equipment replacement for Yamaha outboards in the 115 250HP range, ensuring a precise fit and reliable performance. Using an OEM or high-quality aftermarket seal minimizes the risk of leaks or damage to the engine.

2. **Durability and Performance** MHMoto is a reputable brand known for manufacturing high-quality marine parts. The screw cap cylinder seal is engineered to withstand the pressure and thermal stress of outboard engines, reducing the likelihood of premature failure.

3. **Ease of Installation** The screw cap design simplifies installation compared to some other seal types, as it can be tightened securely without specialized tools beyond a wrench. This makes it accessible for DIYers who are comfortable with basic engine maintenance.

4. **Cost-Effective Alternative to New Engines** Replacing a faulty cylinder seal is far less expensive than overhauling or replacing an entire outboard engine. This part is a critical wear item that should be replaced as part of routine maintenance to prevent catastrophic engine damage.

5. **Prevents Engine Damage** A failing cylinder seal can lead to oil leaks, compression loss, or even engine seizure. Replacing it proactively extends the life of the engine and avoids costly repairs down the line.

6. **Widely Available** As an aftermarket part, it is likely available from multiple suppliers, including online retailers, marine supply stores, and Yamaha dealers. This ensures availability even if the original part is discontinued.

7. **Compatibility with Aftermarket Upgrades** If you ve modified your outboard (e.g., with performance kits or upgraded components), this seal is likely compatible, provided it fits the engine s specifications.

---

### **Cons**

1. **Potential for Counterfeit Parts** Since this is an aftermarket part, there is a risk of purchasing a counterfeit or low-quality replica, especially if buying from untrusted sellers. Counterfeit seals may fail prematurely or not seal properly, leading to leaks or engine issues.

2. **Mismatched Specifications** While this part is designed for Yamaha 115 250HP outboards, there are variations within that range (e.g., different model years or minor engine revisions). Double-checking the exact part number and engine model is crucial to avoid compatibility issues.

3. **Installation Challenges for Inexperienced DIYers** Although the screw cap design is straightforward, improper installation (e.g., overtightening, cross-threading, or using the wrong sealant) can damage the threads or cause leaks. If unsure, consulting a professional mechanic may be advisable.

4. **Limited Warranty or Return Policy** Aftermarket parts often come with shorter warranties or no warranty at all compared to OEM parts. If the seal fails shortly after installation, you may be responsible for replacement costs unless the seller offers a return or replacement policy.

5. **Price Variability** Prices can fluctuate based on the seller, brand reputation, and whether the part is new or refurbished. Some sellers may charge premium prices for "genuine" or "new OEM" parts that are actually aftermarket replicas.

6. **Requires Engine Disassembly** Replacing the cylinder seal typically requires removing the cylinder head or lower unit, which involves disassembling parts of the outboard. This can be time-consuming and may require specialized tools or knowledge.

7. **Risk of Overlooking Other Wear Items** When replacing the seal, it s an opportunity to inspect other critical components (e.g., piston rings, valves, or gaskets). Some owners may skip this step, leading to future issues if other parts are worn.

---

### **Conclusion**

The **MHMoto MHQP-2538 screw cap cylinder seal** is a solid aftermarket option for Yamaha 115 250HP outboards, offering OEM-level compatibility, durability, and ease of installation. It is a cost-effective way to prevent engine damage and extend the life of your outboard, provided it is the correct part for your specific model. However, buyers must exercise caution to avoid counterfeit parts, ensure proper installation, and verify compatibility with their engine.

For most DIYers with moderate mechanical experience, this part is a worthwhile investment. Those who are unsure about installation or lack confidence in their ability to diagnose engine issues may opt for professional installation to avoid potential mistakes.

---

### **Recommendation**

1. **Verify Compatibility** Confirm that the **64E-43821-01-00** part number matches your exact Yamaha outboard model and year. Cross-reference with Yamaha s service manual or a trusted mechanic if unsure.

2. **Purchase from a Reputable Source** Buy from well-known marine suppliers (e.g., West Marine, Sea-Doo Marine, or Yamaha-authorized dealers) or established online retailers with good reviews. Avoid suspiciously cheap sellers, as this may indicate counterfeit or low-quality parts.

3. **Follow Installation Guidelines** Use the correct torque specifications and sealant (if required) to avoid damaging the threads. Refer to Yamaha s service manual or MHMoto s installation instructions for guidance.

4. **Inspect Other Components** While replacing the seal, check for signs of wear in adjacent parts (e.g., piston rings, cylinder walls, or gaskets). Replacing related components at the same time can prevent future issues.

5. **Consider Professional Help if Needed** If you re uncomfortable with engine disassembly or lack the necessary tools, consult a marine mechanic to ensure the seal is installed correctly.

6. **Keep a Record** Document the installation date and mileage to track the seal s performance. This helps in diagnosing future engine issues and planning maintenance intervals.

**Final Verdict**: The MHMoto MHQP-2538 is a **highly recommended replacement part** for Yamaha 115 250HP outboards, provided it is the correct part and installed properly. It strikes a balance between cost, quality, and performance, making it a practical choice for both maintenance and upgrades.

Details:

Shipping: This is the contents of your. Excellent Delivery. High precision and hardness ensure long term reliable service. Out Power Trim Cylinder Head O-ring is made from top quality Aluminum Alloy and Rubber with high strength, prevent corrosion rust, wear impact resistance, can withstand the harsh water environment, sturdy durable.

Direct Replacement. Superior Material. This Outboard Trim Cylinder Cap Tilt End meet or exceed the OEM standard and specification, directly replaces for part number 64E-43821-01- 64E-43821-02- 64E-43821-03- 64E-43821-04- 64E-43821-05- 48630-96J 48630-96J01, 48630-96J02, 48630-96J03, 48630-96J04. This trim end cap/gland perfectly fits for Shows Trim Cylinder 115-250HP Honda/Suzuki/Yamaha 2/4 Stroke.

This Trim Cylinder End Cap Gland with Seals is specially designed to easily and properly replace the old, worn-out or broken caps on your power trim without damage leakage, effectively restore outboard unit maintain optimal hydraulic pressure for smooth operation. You can add a banner for this Return as header and here. High Performance. 1PC 64E-43821-01-00 Screw Trim Cap Cylinder W/Seal For Yamaha 115-250HP Outboard, Perfect Compatibility.

Simply use the correct cap removal tool to remove old and then install new. Package includes 1 x Trim Cylinder End Caps with Seals. Simple Installation. You can add a banner for this Shipping as header and here.

part #: mhqp2538 prices

• $18.90-$289.80

specifications ouboaen:

• for makes: Yamaha
• brand: Mhmoto
• mpn: Mhqp-2538
• type: Screw End With Seals Tilt And Trim
• oem: 64e-43821-01-00, Fsm023, 48630-96j00
• fitment: For 115-250hp Honda/suzuki/yamaha 2 4 Stroke Engines
• material: Aluminum Alloy
• warranty: 1 Year

payments ouboaen:

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

seller ouboaen:

• rating: 100.0%
• # reviews: 329
• city: Walton, Kentucky

returns ouboaen:

• policy: Returns Accepted
• paid by: Seller
• time: 60 Days

offer ouboaen:

• sold: 0
• availability: In Stock
• started: March 13, 2026
• best offers: True
• options: Ship-to-home
• quantity: 8

general ouboaen:

• condition: New
• Boat Parts > Outboard Engines Components > Trim Tilt

shipping ouboaen:

• service: USPS First Class
• type: Fixed
• transit: 4-10 Days
• cost: $0.00
• carrier: USPS
• class: Standard

Mhmoto MHQP-2538 Is Similar To:

• Mhmoto Mhqp-2214 Trim Tilt Cylinder Rebuild Seal Kit For Mercury Mariner Force Cylinders 40-120hp (48.7% similar) Come with all parts necessary for the end cap plunger assembly, including inner o-ring, outer rod wiper, oil seal, ball bearings manual release valve not included. Item specifics: brand Mhmoto, type trim tilt cylinder rebuild seal kit, manufacturer part number MHQP-2214, oem 813432A3, 893929A01, ...(January 4th, 2025)
• Mhmoto Mhqp-0489 Seastar Pt1000-1p 2p Engine Trim jack Plate For Hydraulic Cable Tilt Steering (32% similar) Easy installation this unit can be added to any boat by anyone, allows install on the right or left side of bezel both for dual controls. You can add a banner for this return as header and here. Superior material these bolt-on controls are made with a stainless steel bracket and UV-stabilized abs ...(February 26th, 2025)
• Mhmoto Mhqp-0530 For Honda 40 50 Hp Outboard Motors Water Pump Impeller Repair Kit 06193-zv5-020 (34.5% similar) Function:used to repair/rebuild the water pump impeller for honda outboard engine, makes service job more easy and convenient. For honda 40/50 hp outboard motors water pump impeller repair kit #06193-ZV5-020, features. Shipping shipping: this is the contents of your. Direct replacement:our water ...(August 17th, 2025)
• Mhmoto Mhqp-1113 For Mercury 52-822539t Clutch Dog 3 Jaw Reverse 90-120 Hp 96-97 Force Outboards (36.7% similar) Outboard motors, model years vary. You can add a banner for this shipping as header and here. Shipping shipping: this is the contents of your. Material heavy-duty steel and black powder surface treatment effectively prevents rust.the structure to ensure the stability. You can add a banner for this ...(September 18th, 2025)
• Mhmoto Mhqp-1049 18-2110 Hydraulic Power Trim Hose For Mercury Mariner Outboard Motors 32-88005 (45.1% similar) Premium material:made of high quality rubber and steel, it has corrosion resistance, wear reliability durability. You can simply return it if you are not satisfied with the product. 1PCS power trim hose. Package included. You can add a banner for this return as header and here. Features:used for ...(April 16th, 2026)