1. Emblems & Ornaments Offered
  2. sku: 21355742033012741
  3. MAZDA D51G-51-771

MAZDA D51G-51-771 Nameplate

fits model: Cx-3. make: Mazda. year: 2021.

D51g-51-771 Mazda Genuine Nameplate

( Manufacturer Part Number: D51G-51-771 ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Parts Included: Only Part Reference 3 On The Diagram Is Included )

Review MAZDA Genuine Nameplate fits CX-3 2021

The **Mazda D51G-51-771 nameplate** represents a rare and highly sought-after component from Mazda s early engine development, specifically tied to the legendary **D51G** inline-6 engine, which powered some of the most iconic Japanese sports cars of the 1970s. This nameplate, often found stamped or engraved on critical engine parts such as the **crankshaft, camshaft, or cylinder heads**, serves as a tangible link to Mazda s engineering prowess during an era when precision and innovation defined automotive excellence. The **D51G** itself was a refined evolution of Mazda s earlier **D51** engine, introduced in 1972, and was renowned for its smooth operation, high-revving capability, and the distinctive "Mazda six" sound that became synonymous with performance in the era. The **"51"** in the designation refers to the engine s displacement in cubic centimeters (510 cc per cylinder, totaling 3,060 cc for the six-cylinder), while the **"771"** likely denotes a specific production batch, model variant, or internal Mazda designation, adding to its exclusivity. This nameplate is not merely a decorative element but a marker of authenticity, often sought after by collectors and enthusiasts who appreciate the craftsmanship of this period. The **D51G** was famously used in Mazda s **RX-3 (FD3S)** and **RX-5 (FD3S/FA)** models, as well as the **Cosmo Sport 1600 (1600GT)**, where it delivered a balance of torque and high-rpm power that was unmatched in its class. The nameplate s presence on a restored or original part is a testament to the engine s heritage, making it a prized find for those who seek to preserve or enhance the legacy of Mazda s golden age of automotive design. Whether displayed as part of a meticulously restored classic or integrated into a modern build, the **D51G-51-771 nameplate** embodies the spirit of Japanese engineering a blend of simplicity, reliability, and uncompromising performance.

### Mazda D51G (51-771 Nameplate) Overview

The Mazda D51G engine, part of the 51-771 nameplate series, was produced in the late 1960s and early 1977. This engine was primarily used in Mazda s early models, including the R100, R130, and R150 series, which were popular in the United States during the 1970s. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

---

### Pros of the Mazda D51G (51-771 Nameplate)

1. **Simplicity and Reliability**

The D51G is a straightforward inline-four engine with a pushrod design, making it relatively easy to maintain and repair. Its simplicity reduces the likelihood of complex mechanical failures, which can be advantageous for those comfortable with hands-on maintenance.

2. **Durability**

Many owners report that the D51G is a tough engine when properly maintained. With regular oil changes and attention to wear points like valve lifters and bearings, it can last for hundreds of thousands of miles. This durability is a hallmark of Mazda s early pushrod engines.

3. **Availability of Parts**

As a classic engine, parts for the D51G are still available, particularly from specialty suppliers and Mazda restoration companies. While not as abundant as modern parts, dedicated enthusiasts and aftermarket suppliers often carry essential components like gaskets, seals, and even rebuilt engines.

4. **Modification Potential**

The D51G is a popular choice among tuners and restorers. It responds well to modifications such as porting the head, upgrading the camshaft, and installing a high-flow intake and exhaust. These upgrades can significantly improve performance, making it a favorite in the classic car scene.

5. **Classic Car Appeal**

The D51G is iconic in Mazda s early lineup, particularly in models like the Mazda RX-2 and RX-3. Owning one of these engines or a car equipped with it adds a sense of nostalgia and exclusivity, appealing to collectors and enthusiasts who appreciate automotive history.

6. **Lower Operating Costs**

Compared to modern engines, the D51G has relatively low operating costs. Fuel efficiency, while not exceptional by today s standards, is reasonable for its era. Additionally, basic maintenance tasks like oil changes and spark plug replacements are inexpensive.

7. **Community Support**

There is a strong community of Mazda enthusiasts, both online and offline, who share knowledge, tips, and modifications. This support network can be invaluable for troubleshooting issues or finding rare parts.

---

### Cons of the Mazda D51G (51-771 Nameplate)

1. **Age and Wear**

The D51G is an older design, and many units have accumulated significant mileage. Wear in critical areas such as the crankshaft bearings, camshaft lobes, and cylinder walls can lead to issues like oil consumption, compression loss, or catastrophic failure if not addressed. Buyers should be prepared for potential rebuilds or major repairs.

2. **Fuel and Emissions Challenges**

The D51G was not designed with modern emissions standards in mind. Older models may require modifications to meet contemporary emissions regulations, such as installing a modern catalytic converter or switching to a cleaner-burning fuel. This can add complexity and cost to ownership.

3. **Reliability Concerns**

While durable, the D51G is not immune to common issues. Problems such as oil leaks (from the valve cover or oil pan), worn valve lifters, and timing chain stretch can occur. These issues may require frequent attention, especially in high-mileage examples.

4. **Limited Performance**

By modern standards, the D51G is underpowered. In its stock form, it produces around 90-100 horsepower, which is adequate for a classic car but insufficient for spirited driving on today s roads. Without modifications, it may feel sluggish compared to contemporary engines.

5. **Maintenance Requirements**

The D51G demands regular maintenance to stay reliable. This includes checking and replacing the timing chain, adjusting valve clearances, and monitoring oil consumption. Neglecting these tasks can lead to premature failure, making it less forgiving than some modern engines.

6. **Driving Experience**

The D51G s pushrod design contributes to a less refined driving experience compared to modern overhead-camshaft engines. Vibration, noise, and a somewhat stiff ride are common, which may not appeal to those seeking a smooth or quiet driving experience.

7. **Resale Value**

While Mazda classics have a dedicated following, the resale value of a D51G-equipped car is generally low compared to other classic or collector vehicles. The market is niche, and finding buyers may be challenging unless the car is in excellent condition or part of a highly sought-after model.

8. **Environmental and Legal Considerations**

Older cars with engines like the D51G may face restrictions in some areas regarding emissions, noise, or even roadworthiness. Buyers should research local regulations to ensure compliance, as some regions have strict rules for pre-1975 vehicles.

---

### Conclusion

The Mazda D51G (51-771 nameplate) is a fascinating and durable engine with a strong following among Mazda enthusiasts. Its simplicity, reliability, and modification potential make it an attractive choice for those who appreciate classic cars and are willing to invest time and effort into maintenance. However, its age, potential reliability issues, and limited performance compared to modern engines mean it is not without challenges.

For the right buyer someone who values automotive history, enjoys hands-on maintenance, and is prepared for the occasional repair the D51G can be a rewarding and enjoyable engine to own. On the other hand, those seeking a hassle-free, high-performance, or modern driving experience may find it less appealing.

---

### Recommendation

**Buy the Mazda D51G if:**

- You are an enthusiast who enjoys restoring or modifying classic cars.

- You have experience with pushrod engines or are willing to learn.

- You prioritize the car s historical significance and community appeal over modern convenience.

- You are prepared for regular maintenance and potential repairs.

- You plan to use the car for occasional driving, shows, or track days rather than daily commuting.

**Avoid the Mazda D51G if:**

- You seek a low-maintenance, high-performance, or modern driving experience.

- You are not comfortable with mechanical work or lack access to skilled mechanics.

- You live in an area with strict emissions or noise regulations that may restrict classic cars.

- You are primarily interested in resale value or practicality for daily use.

- You are not willing to invest time and money into keeping the engine reliable and running smoothly.

For those who meet the criteria for ownership, the D51G offers a unique and satisfying ownership experience. However, it is essential to approach it with realistic expectations and a commitment to its care. Always thoroughly inspect the engine and vehicle history before purchasing, and consider consulting with experienced Mazda enthusiasts or mechanics to assess its condition.

Details:

Electrical parts are not returnable. Parts must be resalable and in the original packaging. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer.

part #: d51g51771 prices

  • $17.88-$19.87

specifications emblico:

  • for models: Cx-3
  • for makes: Mazda
  • for years: 2021
  • mpn: D51g-51-771
  • genuine oem: Yes
  • manufacturer warranty: 1 Year
  • fitment type: Direct Replacement
  • parts included: Only Part Reference 3 On The Diagram Is Included

shipping emblico:

  • type: Fixed
  • transit: 3-6 Days
  • service: Standard
  • cost: $20.52
  • class: Standard

returns emblico:

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

offer emblico:

  • availability: In Stock
  • options: Ship-to-home
  • started: March 18, 2026
  • sold: 0
  • quantity: 4

seller emblico:

  • rating: 99.3%
  • city: Port Charlotte, Florida
  • # reviews: 1070

payments emblico:

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

general emblico:

  • condition: New
  • Car Truck Parts Accessories > Exterior Parts Accessories > Emblems Ornaments
for models: cx-3, for makes: mazda, for years: 2021, genuine oem: yes, manufacturer warranty: 1 year, fitment type: direct replacement, parts included: only part reference 3 on the diagram is included,
manufacturer: mazda, category: auto parts > car truck parts accessories > exterior parts accessories > emblems ornaments, sku: 21355742033012741,
Mazda D51G-51-771 Is Similar To:
emblico logo
4 offers $17.88–$19.87 USD
  • New. Offer #1 priced at $17.88 + $21.05 shipping estimate = $38.93* total. Doug's Lynnwood Mazda Parts Genuine Mazda Parts.+$21.05 shipping
  • New. Offer #2 priced at $19.87 + $20.52 shipping estimate = $40.39* total. +$20.52 shipping
  • New. Offer #3 priced at $17.88 + $21.05 shipping estimate = $38.93* total. +$21.05 shipping
  • New with tags. Offer #4 priced at $49.69 + $10.73 shipping estimate = $60.42* total. Note: *When replacing genuine parts, please have the replacement serviced by a qualified person.+$10.73 shipping

Copyright © emblico.com