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  3. HONDA 30500-179-712

HONDA 30500-179-712 Ignition Coil

fits model: C70, Passport. make: Honda. year: 1970–1981.

30500-179-712 Honda 1980 1981 Oem C70 C 70 Passport Ignition Coil Assembly

( Manufacturer Part Number: 30500-179-712 ), ( Part Type: Ignition Coil ), ( Vintage Part: Yes ), ( Country Of Origin: Japan )

Review HONDA Oem Ignition Coil Assembly fits PASSPORT C70 1970–1981

The **Honda 30500-179-712 ignition coil**, originally manufactured for the **1980 and 1981 Honda C70 and 70 Passport** models, represents a critical yet often overlooked component in the engine s ignition system. This high-quality, factory-spec coil is designed to deliver a precise and powerful spark to the spark plugs, ensuring optimal combustion efficiency and reliable performance in the iconic Honda C70 s 700cc air-cooled single-cylinder engine. Crafted with durable materials, the coil features a robust internal winding structure that maintains consistent voltage output, even under demanding driving conditions, while its robust casing protects against moisture, dust, and minor mechanical stress. The **30500-179-712** is a direct-fit replacement, meaning it aligns perfectly with the original coil s mounting points and electrical connections, eliminating the need for modifications or adapters. Its compact yet sturdy design allows for easy installation, making it an ideal choice for both restoration projects and routine maintenance. Whether restoring a classic C70 to its original glory or upgrading an older vehicle for improved reliability, this coil ensures a strong, dependable ignition system that complements the engine s smooth, efficient operation. Built to Honda s exacting standards, it provides the same level of performance as the original, helping to preserve the engine s longevity and the vehicle s legendary driving experience.

### **Pros and Cons of buying a Honda 30500-179-712 (1980-1981 C70/C70 Passport Ignition Coil)**

#### **Pros:**

1. **Reliability and Durability** Honda ignition coils from this era are known for their robust construction, often lasting longer than aftermarket alternatives if properly maintained. Many original coils from this period can still function well if they haven t been damaged by moisture, heat, or electrical issues.

2. **Ease of Installation** The coil is a straightforward bolt-on replacement. No major modifications are required, and it fits directly into the engine bay without complex wiring changes. This makes it a simple DIY project for those with basic mechanical skills.

3. **Compatibility** This coil is specifically designed for the **1980-1981 Honda C70/C70 Passport (700cc engine)**, ensuring a perfect fit without the need for adapters or modifications. It s also compatible with other early Honda models that share the same ignition system.

4. **Cost-Effective Compared to Engine Replacement** Replacing a faulty ignition coil is far cheaper than overhauling or replacing the entire engine. For a used coil, the price is minimal compared to the labor and parts required for more extensive repairs.

5. **Availability of Parts** While original OEM coils may be hard to find new, they are occasionally available from junkyards, eBay, or specialty Honda parts suppliers. Many aftermarket coils (e.g., from NGK, Denso, or ACDelco) are also compatible and often come with warranties.

6. **Prevents Further Damage** A failing ignition coil can cause misfires, poor fuel economy, and potential damage to spark plugs, wires, or even the catalytic converter if left unaddressed. Replacing it early can prevent more expensive repairs down the line.

7. **Historical and Nostalgia Value** For enthusiasts who appreciate classic Hondas, restoring or maintaining an original component like this coil can be rewarding. It preserves the authenticity of the vehicle s build.

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#### **Cons:**

1. **Age and Wear** This coil is from the late 1970s/early 1980s, meaning it may have been stored improperly (exposed to moisture, heat, or corrosion) or subjected to high mileage. A used coil could be dry, cracked, or internally degraded, leading to premature failure.

2. **Limited Lifespan** Even if the coil appears intact, its internal components (e.g., core, windings) may be worn out. Original coils from this era typically last **30,000 50,000 miles** under ideal conditions, but a used one could be near or past its lifespan.

3. **Potential for Electrical Issues** Older coils can develop resistance in the windings or insulation breakdown, causing intermittent misfires or complete failure. Testing with a multimeter or ignition analyzer is recommended before purchase.

4. **Difficulty Finding a Tested Unit** Unlike new coils, used ones often come without a history of use. You may not know if it was replaced due to failure or if it was simply sitting in a garage for decades. Asking the seller for proof of functionality (e.g., a test drive or spark plug inspection) is crucial.

5. **Aftermarket Alternatives May Be Better** Modern aftermarket coils (e.g., **NGK 30500-179-712 equivalent, Denso 4603, or ACDelco 41-970**) are often more reliable, come with warranties, and are designed to meet stricter emissions standards. While they may not be a perfect OEM replacement, they offer better performance and longevity.

6. **Risk of Counterfeit or Mismatched Parts** Buying from unverified sellers (especially online) increases the chance of receiving a fake, mismatched, or damaged coil. Always verify the part number and condition before purchasing.

7. **Potential for Hidden Damage** Corrosion, cracked insulation, or burnt windings may not be visible externally. A coil that looks fine on the outside could fail shortly after installation if internally compromised.

---

### **Conclusion:**

Buying a used **Honda 30500-179-712 ignition coil** for your 1980-1981 C70/C70 Passport can be a **cost-effective and straightforward solution** if you find a reliable, tested unit. It s ideal for those who prioritize authenticity, have limited funds, or are restoring a classic with original parts. However, the risks of purchasing a worn-out or damaged coil make it a **high-risk, low-reward** option compared to aftermarket alternatives.

If you re comfortable with testing the coil (e.g., checking resistance, inspecting for damage, or verifying it produces a strong spark), and you find a reputable seller, it *could* be a good deal. Otherwise, investing in a **new or high-quality aftermarket coil** (with warranty) is the safer and more practical choice, offering better performance and peace of mind.

---

### **Recommendation:** 1. **If you want the original part for authenticity and have a trusted source:**

- Purchase from a **junkyard with a good reputation** or a **verified seller** who can confirm the coil is functional.

- **Test it before buying** (or have it tested) by checking resistance (should be around **3 6 ohms** for the primary winding and **10,000 20,000 ohms** for the secondary) and ensuring it produces a strong spark when connected to the ignition system.

- Consider **replacing spark plugs and wires** at the same time, as they may also be worn.

2. **If you want reliability and longevity:**

- **Buy a new or aftermarket coil** (e.g., **NGK 23206, Denso 4603, or ACDelco 41-970**) that matches the OEM specifications. These are widely available, come with warranties, and are designed to last longer.

- Aftermarket coils are often **just as compatible** and may even improve performance due to better materials.

3. **If you re unsure:**

- **Test the existing coil first** by swapping it with a known-good one (if available) or using a **multimeter and spark tester**. If it fails, proceed with a replacement.

- Consider **consulting a Honda specialist** who can inspect the ignition system and recommend the best course of action.

**Final Verdict:**

Unless you re certain the used coil is in excellent condition and worth the risk, **an aftermarket replacement is the smarter choice** for most owners. The original part may hold sentimental value, but modern alternatives provide better reliability and support. Always prioritize **testing and verification** if you proceed with a used coil.

Details:

CAME OFF A 1981 HONDA C70 PASSPORT Build date of 07/80 WITH 6,171 MILESFRAME #JH2DA0107BS109373 ENGINE #DA01E-2109366 SEE PICTURES FOR CONDITION AND WHATS INCLUDED.

part #: 30500179712 prices

  • $28.21-$40.00

specifications cyclevintagee:

  • for models: C70, Passport
  • for makes: Honda
  • for years: 1970-1981
  • mpn: 30500-179-712
  • part type: Ignition Coil
  • vintage part: Yes
  • country of origin: Japan

payments cyclevintagee:

  • wallet: Paypal
  • other
  • credit card: Discover

offer cyclevintagee:

  • options: Ship-to-home
  • availability: In Stock
  • quantity: 1
  • sold: 0
  • best offers: True
  • started: May 29, 2026

returns cyclevintagee:

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

shipping cyclevintagee:

  • type: Calculated
  • cost: $0.00
  • transit: 4-7 Days
  • carrier: USPS
  • class: Standard
  • service: USPS Ground Advantage

general cyclevintagee:

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

seller cyclevintagee:

  • rating: 100.0%
  • # reviews: 3748
  • city: Spokane, Washington
for models: c70, passport, for makes: honda, for years: 1970-1981, part type: ignition coil, vintage part: yes, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories, sku: 22634089589122711,
Honda 30500-179-712 Is Similar To:
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2 offers $28.21–$40.00 USD
  • Used. Offer #1 priced at $40.00 + $0.00 shipping estimate = $40.00* total. FREE SHIPPING
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