VOLVO PENTA 21255887 Dph Gear Set 1.76R 0670

( Brand: Volvo Penta ), ( Manufacturer Part Number: 21255887 ), ( Part Type: Gear ), ( Disclaimer: All Parts Come As Pictured. )

Review VOLVO PENTA Oem Dph a Gear Set

The **Volvo Penta 21255887 DPH-A Gear Set (1.76:1 Ratio, Part #0670)** is a precision-engineered marine drive component designed to deliver exceptional performance, durability, and reliability for medium to large outboard and stern drive applications. Part of Volvo Penta s renowned DPH-A series, this gear set is meticulously crafted to withstand the demanding stresses of high-torque propulsion systems while maintaining optimal efficiency and smooth operation. The **1.76:1 reduction ratio** ensures a balanced power transfer between the engine and the propeller, enhancing both speed and torque delivery for optimal boat handling, whether cruising at leisure or navigating through challenging waters. Constructed from high-grade, heat-treated steel, the gear teeth exhibit superior wear resistance and load-bearing capacity, minimizing backlash and ensuring consistent power transmission even under heavy loads. This gear set is engineered to integrate seamlessly with Volvo Penta s outboard and inboard engines, offering compatibility with a range of marine applications, from fishing vessels and yachts to commercial and workboats. Its robust design also incorporates precision-machined bearings and seals, reducing friction and preventing premature wear, which extends the lifespan of the entire propulsion system. Whether used in recreational or professional settings, the **21255887 DPH-A Gear Set** exemplifies Volvo Penta s commitment to innovation and engineering excellence, providing boat owners with a dependable and high-performance component that enhances both performance and longevity.

The **Volvo Penta 21255887 DPH-A gear set (1.76R, 0670)** is a transmission unit commonly used in marine applications, particularly for outboard engines or stern drives. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of buying a Volvo Penta 21255887 DPH-A Gear Set**

1. **Compatibility and Fitment**

- Designed specifically for Volvo Penta outboard engines and stern drives, ensuring a seamless integration with the drivetrain. This reduces the risk of misalignment or performance issues.

- The **1.76R** reduction ratio is optimized for certain applications, such as cruising or moderate-speed vessels, providing a balance between power delivery and fuel efficiency.

2. **Durability and Build Quality**

- Volvo Penta is known for manufacturing robust marine components, and this gear set is no exception. The DPH-A series is built with precision engineering, using high-quality materials like hardened steel gears and sealed bearings to withstand the demands of marine environments.

- The **0670** designation suggests it may be part of a later-generation model, which often incorporates improvements in wear resistance and longevity compared to older designs.

3. **Performance Optimization**

- The gear set is engineered to reduce engine RPM while increasing torque at the propeller, which can improve fuel efficiency and reduce wear on the engine over time.

- The **1.76R** ratio is suitable for applications where a moderate reduction is needed, such as in fishing boats, cruisers, or smaller commercial vessels where smooth power delivery is critical.

4. **Aftermarket Availability and Support**

- Volvo Penta has a strong aftermarket presence, meaning you can easily find replacement parts, service manuals, or professional technicians familiar with this gear set.

- The brand s reputation for reliability also means that finding compatible upgrades or modifications is straightforward.

5. **Warranty and Reliability**

- New or OEM-certified units often come with warranties, providing peace of mind against defects in materials or workmanship.

- Volvo Penta s long-standing reputation for reliability suggests that this gear set will perform consistently over time with proper maintenance.

6. **Versatility**

- The DPH-A series is compatible with a range of Volvo Penta outboard engines, making it a versatile choice for boat owners who may need to upgrade or replace components in the future.

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### **Cons of buying a Volvo Penta 21255887 DPH-A Gear Set**

1. **Cost**

- As an OEM or high-quality aftermarket part, this gear set is likely to be more expensive than generic or lower-end alternatives. The price can range significantly depending on whether it is new, used, or refurbished.

- For budget-conscious buyers, the cost may be a barrier, especially if the gear set needs to be purchased alongside other components or labor for installation.

2. **Installation Complexity**

- Replacing a gear set often requires removing the outboard engine or stern drive, which can be a labor-intensive process. It may necessitate specialized tools, mechanical skill, or professional assistance, adding to the overall cost.

- Improper installation can lead to misalignment, premature wear, or even damage to the engine or drive system, so precision is critical.

3. **Age of the Model**

- The **0670** designation suggests this is an older model (likely from the late 2000s or early 2010s). While still reliable, it may lack some of the latest advancements in marine transmission technology, such as improved seals, lighter materials, or electronic diagnostics.

- If newer models with better efficiency or durability exist, upgrading might offer long-term benefits despite the higher initial cost.

4. **Limited Customization**

- Unlike some aftermarket gear sets, this is a standardized unit with a fixed reduction ratio (1.76R). If your application requires a different ratio for optimal performance, you may need to source a different part or accept compromises in power delivery.

5. **Potential for Counterfeit Parts**

- The marine aftermarket is prone to counterfeit or knockoff parts, particularly for high-demand Volvo Penta components. Purchasing from untrusted sellers could result in a substandard gear set that fails prematurely or does not fit correctly.

- Always verify the authenticity of the part, especially when buying from third-party sellers or online marketplaces.

6. **Maintenance Requirements**

- While durable, marine gear sets require regular maintenance to ensure longevity. This includes checking for leaks, lubricating bearings, and inspecting for wear. Neglecting maintenance can lead to costly repairs or failure in critical situations.

- Some older models may require more frequent servicing compared to newer designs with improved seals and lubrication systems.

7. **Lead Times for Replacement Parts**

- If the gear set fails or needs servicing, sourcing replacement parts or finding a technician with the right expertise may take time, especially if the part is discontinued or no longer in stock.

- This can be problematic for boat owners who rely on their vessels for income or recreational use.

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### **Conclusion**

The **Volvo Penta 21255887 DPH-A gear set (1.76R, 0670)** is a well-engineered, reliable component for marine applications, particularly for Volvo Penta outboard engines and stern drives. Its strengths lie in its compatibility, durability, and performance optimization, making it a solid choice for boat owners who prioritize quality and longevity. However, the higher cost, potential installation challenges, and the need for regular maintenance are factors that must be carefully considered.

For buyers who require a high-performance, long-lasting gear set and can invest in proper installation and maintenance, this part is an excellent choice. Conversely, those operating on a tight budget or seeking the latest technological advancements may find newer or alternative gear sets more suitable.

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### **Recommendation**

1. **Verify the Part s Authenticity**: Ensure you are purchasing the genuine Volvo Penta part, preferably from an authorized dealer or a reputable marine parts supplier. Avoid counterfeit parts, which can lead to performance issues or failure.

2. **Assess Your Budget**: Weigh the cost of the gear set against your overall project budget. If the price is prohibitive, consider whether a refurbished unit or an alternative brand might suffice for your needs.

3. **Plan for Professional Installation**: If you lack mechanical experience, hire a certified marine technician to install the gear set. Proper installation is critical to avoid misalignment or damage to the engine or drive system.

4. **Check for Newer Alternatives**: If available, explore newer models or updated versions of the DPH-A series that may offer improved efficiency, durability, or ease of maintenance.

5. **Budget for Maintenance**: Factor in the cost of regular maintenance, including lubrication, inspections, and potential future repairs. This will help you avoid unexpected downtime or expenses.

6. **Consider the Application**: Ensure that the **1.76R** reduction ratio aligns with your vessel s requirements. If your boat s performance would benefit from a different ratio, consult a marine specialist to determine the best option.

7. **Purchase from Trusted Sources**: Buy the gear set from a dealer with a good reputation for marine parts. Look for warranties or return policies that provide protection against defects.

**Final Verdict**: The **Volvo Penta 21255887 DPH-A gear set** is a dependable and high-quality choice for Volvo Penta outboard applications, particularly for those who value reliability and performance. With careful planning and maintenance, it will serve your vessel well for many years. However, ensure that the investment aligns with your budget and long-term goals for your boat.

Details:

Good Condition, Ready To Install. All Parts Come As Pictured.

part #: 21255887 prices

• $350.00-$1299.99

specifications ouboaen:

• for makes: Volvo
• brand: Volvo Penta
• mpn: 21255887
• part type: Gear
• disclaimer: All Parts Come As Pictured.

payments ouboaen:

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

offer ouboaen:

• quantity: 1
• sold: 0
• started: March 21, 2026
• options: Ship-to-home
• availability: In Stock

returns ouboaen:

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

shipping ouboaen:

• service: UPS Ground
• cost: $70.00
• carrier: UPS
• class: Standard
• transit: 4-10 Days
• type: Fixed

seller ouboaen:

• # reviews: 36144
• rating: 99.5%
• city: Pasadena, California

general ouboaen:

• Boat Parts > Outboard Engines Components > Other
• condition: Used

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