1. Motorcycle Spark Plugs For Sale
  2. sku: 13983235175679673
  3. HARLEY DAVIDSON 31600048A

HARLEY-DAVIDSON 31600048A Phat Spark Plug Wires 10MM

fits model: Screamin, Eagle. make: Eagle, Harley.

31600048a Harley-davidson Screamin Eagle 10mm Phat Spark Plug Wires Black #

( Brand: Harley-davidson ), ( Manufacturer Part Number: 31600048A ), ( Type: Phat Spark Plug ), ( Country Of Origin: United States )

Review HARLEY DAVIDSON 10mm Phat Spark Plug Wires Black fits SCREAMIN EAGLE

The **Harley-Davidson 31600048A Screamin Eagle 10mm Phat Spark Plug Wires** are a premium, high-performance upgrade designed to enhance the ignition system of Harley-Davidson motorcycles, delivering a surge of power, improved throttle response, and a more aggressive, rev-happy character. Crafted with **Screamin Eagle s signature precision engineering**, these wires are built to withstand the demanding conditions of high-performance riding while ensuring optimal spark delivery for maximum combustion efficiency. The **10mm thick, high-quality rubber insulation** provides superior durability and resistance to oil, heat, and abrasion, ensuring long-lasting performance even under the most intense riding conditions. Engineered with **copper core conductors** and **high-temperature resistant materials**, these wires minimize resistance and maximize voltage transfer, resulting in a more consistent and powerful spark at every cycle. The **Phat design** not only enhances the aesthetic appeal of your Harley s engine bay with its bold, muscular appearance but also contributes to improved heat dissipation, reducing the risk of premature wear or failure. Whether you re chasing top-end power, refining your bike s throttle response, or simply seeking a noticeable upgrade in ignition reliability, these wires are a standout choice for riders who demand nothing less than excellence. Perfect for both stock and modified Harley-Davidson engines, including V-Twin and V-Rod configurations, these wires are a straightforward yet impactful modification that pays dividends in performance and confidence on the road or track.

**Pros and Cons of Buying Harley-Davidson Part Number 31600048A (Screamin Eagle 10mm Phat Spark Plug Wires)**

### **Pros:**

1. **OEM Quality and Compatibility** These are genuine Harley-Davidson parts, designed specifically for Screamin Eagle engines (commonly found on Harley-Davidson models like the Sportster 1200, 1400, and some touring bikes). They are built to meet Harley s high standards, ensuring proper fitment and performance.

2. **Enhanced Performance** The "Phat" designation suggests these wires are thicker and potentially more robust than standard spark plug wires, which may improve signal strength and ignition reliability. This can contribute to better throttle response and smoother engine operation, especially in high-performance or modified Screamin Eagle engines.

3. **Durability** Harley-Davidson parts are known for their longevity, often outlasting aftermarket alternatives. The reinforced construction of these wires can resist heat, vibration, and wear better than cheaper alternatives, reducing the risk of failure over time.

4. **Aesthetic Appeal** As part of the Screamin Eagle lineup, these wires feature Harley s signature styling, including the distinctive black and orange color scheme. This can enhance the bike s visual appeal, especially for owners who prioritize a cohesive, high-end look.

5. **Warranty Coverage** Purchasing from an authorized dealer or Harley s official website may include warranty protection, offering peace of mind against defects in materials or workmanship.

6. **Compatibility with Modifications** If you ve modified your Screamin Eagle engine (e.g., with a performance camshaft, exhaust, or fuel system), these wires may be better suited to handle the increased demands of a tuned engine compared to stock wires.

7. **Easy Installation** Since they are direct replacements for the original equipment, installation is straightforward, requiring minimal tools and expertise. Harley s wiring harnesses are typically designed for plug-and-play compatibility.

---

### **Cons:**

1. **Higher Cost** Genuine Harley-Davidson parts are significantly more expensive than aftermarket alternatives. A set of these wires will likely cost more than budget-friendly options from other brands, which may be a deterrent for cost-conscious buyers.

2. **Limited Availability** These wires may not be as widely stocked as more common Harley parts, especially in smaller shops or online retailers. You may need to order directly from Harley or an authorized dealer, which could involve shipping delays or higher prices.

3. **Overkill for Stock Engines** If your Screamin Eagle engine is stock or lightly modified, the performance benefits of these "Phat" wires may be marginal. For most stock bikes, standard spark plug wires might suffice without the premium price.

4. **Potential for Overcomplication** Some riders prefer simplicity and may argue that aftermarket wires (e.g., from brands like NGK, Denso, or Harley-compatible third-party manufacturers) offer similar performance at a lower cost. The "Phat" designation might not provide a drastic advantage for everyday riding.

5. **Maintenance and Replacement Costs** While durable, any spark plug wires will eventually wear out. Replacing them with Harley parts means incurring the higher cost repeatedly, which could add up over time compared to aftermarket options.

6. **Brand Loyalty vs. Practicality** For riders who prioritize brand loyalty and the Harley experience, these wires are ideal. However, those who value practicality and cost efficiency might find aftermarket alternatives just as reliable for their needs.

---

### **Conclusion:**

Harley-Davidson s 31600048A Screamin Eagle 10mm Phat spark plug wires are a premium choice for owners who want the best in quality, compatibility, and aesthetics. They are ideal if you:

- Have a modified Screamin Eagle engine and want wires that can handle increased performance demands.

- Prioritize OEM reliability and warranty coverage.

- Value the Harley brand s styling and want a cohesive look for your bike.

- Are willing to invest in high-quality parts for long-term durability.

However, if you re on a budget, have a stock engine, or prefer aftermarket options, you may find equally good (or better) alternatives at a lower cost. The decision ultimately depends on your priorities: whether you value performance, brand consistency, and aesthetics over cost savings.

### **Recommendation:**

- **Buy these wires if:** You ve modified your Screamin Eagle engine, want OEM quality, or prioritize Harley s branding and warranty. They are worth the investment for performance-oriented riders.

- **Consider alternatives if:** Your engine is stock or lightly modified, and you re looking to save money. Aftermarket wires from reputable brands (e.g., NGK, Denso, or Harley-compatible third-party manufacturers) may offer similar performance at a fraction of the cost.

- **Verify compatibility:** Double-check that these wires are indeed the correct fit for your specific model year and engine configuration, as Harley s part numbers can vary slightly across different bikes.

For most riders, a balanced approach prioritizing Harley parts for critical components and using aftermarket options for less critical upgrades can offer the best combination of performance, cost, and satisfaction.

Details:

Jim P/N - 31600048A. Screamin Eagle 10mm Phat Spark Plug Wires, Black P/N - 31600048A, Fits: 15 Later XG model's, NEW IN ORIGINAL PACKAGING, UNUSED. It is very expensive to list and ship items. New Inventory.

part #: 31600048a prices

  • $25.00-$42.75

specifications cyclesparkplugs:

  • for models: Screamin, Eagle
  • for makes: Eagle, Harley
  • brand: Harley-davidson
  • mpn: 31600048a
  • type: Phat Spark Plug
  • country of origin: United States

seller cyclesparkplugs:

  • city: USA
  • # reviews: 7366
  • rating: 99.9%

general cyclesparkplugs:

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

shipping cyclesparkplugs:

  • type: Fixed
  • transit: 2-5 Days
  • class: Economy
  • service: Economy
  • cost: $10.00

returns cyclesparkplugs:

  • policy: No Returns

offer cyclesparkplugs:

  • started: February 19, 2026
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock

payments cyclesparkplugs:

  • other
  • credit card: Mastercard
  • wallet: Apple-pay
for models: screamin, eagle, for makes: eagle, harley, type: phat spark plug, country of origin: united states,
category: motorcycle parts > motorcycle scooter parts accessories > electrical ignition components > spark plugs, sku: 13983235175679673,
Harley-davidson 31600048A Is Similar To:
cyclesparkplugs logo
2 offers $25.00–$42.75 USD
  • New. Offer #1 priced at $42.75 + $11.95 shipping estimate = $54.70* total. +$11.95 shipping
  • Used. Offer #2 priced at $25.00 + $10.00 shipping estimate = $35.00* total. Screamin Eagle 10mm Phat Spark Plug Wires, Black P/N - .+$10.00 shipping

Copyright © cyclesparkplugs.com