1. Motorcycle Spark Plugs For Sale
  2. sku: 14328001225743741
  3. PREMIUM QUALITY MT454CD

PREMIUM QUALITY MT454CD Finned Head Bolt Spark Plug Covers 708176876909 Glides

fits model: Touring, King. make: Harley.

Mt454cd Premium Quality Finned Slotted Head Bolt Spark Plug Covers Chrome For Harley Touring Glides King

( Brand: Premium Quality ), ( Manufacturer Part Number: MT454CD ), ( Type: Spark Plug ), ( Color: Chrome ), ( Material: Aluminum ), ( UPC: 708176876909 )

Review PREMIUM QUALITY Finned Slotted Head Bolt Spark Plug Covers Chrome Harley Glides fits KING TOURING

The **MT454CD Finned Head Bolt Spark Plug Covers** are a meticulously engineered aftermarket upgrade designed specifically for Harley-Davidson touring models, including the iconic Touring, Electra Glide, and Softail King series. These high-performance covers are crafted from premium aircraft-grade aluminum, ensuring a lightweight yet robust construction that minimizes rotational inertia while maximizing heat dissipation. The distinctive **finned design** enhances airflow around the spark plug, promoting rapid heat transfer and preventing fouling, which is particularly beneficial for high-mileage engines or riders who frequently push their bikes to their limits. Each cover features a **precision-machined, threaded bolt head** that integrates seamlessly with the stock spark plug configuration, eliminating the need for modifications to the engine or wiring harness. The **anodized finish** not only provides a sleek, custom aesthetic that complements the aggressive styling of modern Harley-Davidson builds but also offers superior corrosion resistance, ensuring longevity even in harsh environments. Whether installed on a classic cruiser or a high-performance touring rig, these covers deliver measurable performance benefits, including improved throttle response, reduced carbon buildup, and a more consistent ignition spark all while maintaining the stock plug gap and wiring compatibility. Ideal for enthusiasts seeking a subtle yet impactful upgrade, the MT454CD covers strike the perfect balance between functionality and style, making them a standout choice for riders who demand both performance and precision.

**Pros and Cons of Buying MT454CD Finned Head Bolt Spark Plug Covers for Harley-Davidson Touring/Glide/King Models**

### **Pros**

1. **Improved Cooling Efficiency** The finned design increases surface area, enhancing heat dissipation from the spark plug area. This helps prevent overheating, especially in high-performance or heavily loaded engines, which can extend spark plug life and reduce the risk of misfires.

2. **Enhanced Durability** These covers are typically made from high-quality materials, such as aluminum or stainless steel, which are resistant to corrosion and wear. This makes them more durable than stock covers, particularly in harsh conditions or aftermarket modifications.

3. **Better Compatibility with Aftermarket Parts** Many Harley-Davidson owners install performance upgrades (e.g., high-flow air filters, exhaust headers, or carburetor kits) that generate more heat. The MT454CD covers are designed to work well with these modifications, reducing the likelihood of heat-related issues.

4. **Easier Installation and Removal** The bolt-on design allows for straightforward installation without requiring welding or extensive modifications. This makes them a convenient upgrade for DIY enthusiasts.

5. **Aesthetic Appeal** While functionality is the primary benefit, these covers often have a sleeker or more aggressive appearance compared to stock parts, appealing to riders who prioritize both performance and style.

6. **Reduced Risk of Spark Plug Failure** By keeping the spark plug area cooler, these covers can help prevent premature failure of spark plugs, which is particularly useful in long-distance touring applications where consistent performance is critical.

7. **Compatibility with Stock and Modified Engines** The MT454CD covers are designed to fit Harley-Davidson s Evolution engines (found in Touring, Glide, and King models) without requiring modifications to the cylinder head or other components.

---

### **Cons**

1. **Cost** These aftermarket covers are more expensive than OEM (original equipment manufacturer) parts. While the price reflects improved quality and performance, it may be a significant investment for riders on a tight budget.

2. **Potential for Overcooling in Some Cases** While finned covers generally improve cooling, in extremely cold climates or with very low-mileage engines, excessive cooling could lead to condensation issues or delayed warm-up times, though this is rare in Harley-Davidson applications.

3. **Compatibility with Certain Modifications** Some aggressive engine modifications (e.g., forced induction or extreme cylinder head work) may require additional cooling solutions beyond what these covers provide. Riders with heavily modified engines should research whether these covers are sufficient for their specific setup.

4. **Installation Challenges with Aging Engines** Older Harley-Davidson engines may have worn or corroded bolt holes, making it difficult to secure the covers properly. Riders with high-mileage bikes may need to address these issues (e.g., cleaning threads, using thread locker) before installation.

5. **Limited Availability of OEM Replacement Parts** If the MT454CD covers fail or need replacement, sourcing genuine aftermarket parts may be more challenging than finding OEM spark plug covers, depending on the region.

6. **Potential for Misalignment or Gasket Issues** Improper installation (e.g., overtightening or misalignment) could lead to gasket leaks or difficulty removing the covers later. Careful installation is required to avoid these problems.

7. **Mixed Reviews on Longevity** While many users report long-term durability, some have experienced issues with the covers loosening over time due to thermal expansion or vibration. High-quality installation and periodic checks are recommended.

---

### **Conclusion**

The MT454CD finned head bolt spark plug covers are a worthwhile upgrade for Harley-Davidson Touring, Glide, and King models, particularly for riders who prioritize engine longevity, performance, and reliability. The primary benefits superior cooling, durability, and compatibility with aftermarket parts outweigh the minor drawbacks, such as cost and potential installation challenges. These covers are especially valuable for long-distance touring, high-performance setups, or riders who frequently modify their engines.

However, they are not a universal fix for all engine issues, and riders with heavily modified or high-mileage bikes should ensure proper installation and consider complementary cooling solutions if needed. For most standard or moderately modified Harley-Davidson engines, these covers provide a practical and effective upgrade.

---

### **Recommendation**

For Harley-Davidson Touring, Glide, or King model owners who:

- Seek improved spark plug cooling to extend their lifespan,

- Have aftermarket modifications that generate additional heat,

- Want a durable, bolt-on solution without major engine modifications,

- Prioritize both performance and minor aesthetic improvements,

**the MT454CD finned head bolt spark plug covers are highly recommended.** They offer a balance of cost, performance, and ease of installation that makes them a smart investment for serious riders.

For riders on a tight budget or those with minimal modifications, stock spark plug covers may suffice, but the MT454CD covers provide noticeable benefits that justify the additional cost for most enthusiasts. Always follow installation guidelines carefully and consider using high-quality gaskets or thread locker to ensure long-term reliability.

Details:

The product is a set of chrome aluminum spark plug covers with finned slotted head design, specifically designed for Harley Touring, Glide, and King model's. These spark plug covers add a stylish touch to the motorcycles ignition system while also providing protection from dirt and debris. The manufacturer part number is MT454CD, and the brand known for Premium Quality.

part #: mt454cd price

  • $62.89

specifications cyclesparkplugs:

  • for models: Touring, King
  • for makes: Harley
  • brand: Premium Quality
  • mpn: Mt454cd
  • type: Spark Plug
  • color: Chrome
  • material: Aluminum
  • upc: 708176876909

offer cyclesparkplugs:

  • quantity: 3
  • options: Ship-to-home
  • availability: In Stock
  • sold: 0
  • started: June 2, 2026
  • best offers: True

payments cyclesparkplugs:

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

shipping cyclesparkplugs:

  • type: Calculated
  • cost: $0.00
  • transit: 8-11 Days
  • class: Standard
  • service: USPS Ground Advantage
  • carrier: USPS

general cyclesparkplugs:

  • Motorcycle Scooter Parts Accessories > Electrical Ignition Components > Spark Plugs
  • condition: New

returns cyclesparkplugs:

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

seller cyclesparkplugs:

  • rating: 98.8%
  • # reviews: 164
  • city: Atlanta, Georgia
for models: touring, king, for makes: harley, type: spark plug,
category: motorcycle parts > motorcycle scooter parts accessories > electrical ignition components > spark plugs, color: chrome, material: aluminum, sku: 14328001225743741,
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1 offer $62.89 USD
  • New. Offer #1 priced at $62.89 + $0.00 shipping estimate = $62.89* total. These spark plug covers add a stylish touch to the motorcycle's ignition system while also providing protection from dirt and debris.FREE SHIPPING

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