CHAMPION 32305-48 Nos Spark Plug Hex 14MM

( Brand: Champion ), ( Manufacturer Part Number: 32305-48 ), ( Type: Spark Plug ), ( Thread Diameter: 14 Mm ), ( Machine Type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle ), ( Vintage Part: Yes ), ( Country Of Origin: United States )

Review CHAMPION Nos #2 Spark Plug 14mm Stamped Harley Hex fits PANHEAD SHOVELHEAD

The **Champion 32305-48 NOS Spark Plug** is a meticulously preserved, no-service (NOS) gem designed exclusively for Harley-Davidson s iconic **Shovelhead** and **Panhead** engines, spanning models from the late 1960s through the early 1980s. Engineered with Champion s legendary precision, this **14mm hex plug** features a **14mm thread size** and a **1/8-inch electrode gap**, ensuring optimal ignition performance for classic Harley-Davidson V-twin powerplants. Crafted from high-quality materials, this plug boasts a **copper-core construction** for superior heat dissipation, reducing the risk of fouling while maintaining consistent spark reliability critical for engines that demand both raw power and longevity. The **shiny, unaltered finish** of the NOS plug guarantees it has never been fired, cleaned, or serviced, preserving its original factory condition, which is especially prized by collectors and enthusiasts who seek authenticity in their restoration projects. Whether installed in a meticulously restored **1970s Panhead** or a high-mileage **Shovelhead** cruiser, this plug delivers the classic spark performance that Harley-Davidson engines were built to expect. Its **universal compatibility** with most Shovelhead and Panhead models including the **1966 1983 Panhead** and **1970 1985 Shovelhead** makes it an indispensable part of any true rider s toolkit, blending heritage engineering with modern reliability for the ultimate in vintage Harley-Davidson performance.

**Pros and Cons of buying a Champion 32305-48 NOS Spark Plug (14mm, Harley-Davidson Shovelhead/Big Twin Panhead)**

1. **New Old Stock (NOS) Condition** The plug is unused and in original packaging, ensuring it meets original specifications without wear or degradation. This is ideal for maintaining factory performance and longevity.

2. **Direct OEM Replacement** Champion is a trusted manufacturer that produces plugs designed to match Harley-Davidson s original equipment standards. This ensures proper fitment, gap, and performance for Shovelhead and Panhead engines.

3. **Reliable Brand Reputation** Champion is a well-known brand in the automotive aftermarket, known for durability and consistent quality. Their plugs are widely used in classic Harley-Davidson applications.

4. **Easy Installation** The 14mm hex head is standard for Harley-Davidson engines, making it straightforward to install without requiring special tools beyond a socket wrench.

5. **Compatibility with Classic Engines** The plug is designed specifically for Shovelhead (1970 1985) and Panhead (1948 1965) Harley-Davidson engines, ensuring proper ignition characteristics for these older models.

6. **No Modifications Needed** Unlike aftermarket performance plugs, this is a stock replacement, meaning it won t alter ignition timing or power output unless the engine is modified.

7. **Long Shelf Life** Since it s NOS, the plug is likely to remain in perfect condition for years if stored properly, making it a good investment for future use.

---

1. **Limited Availability** NOS parts can be harder to find compared to new or used alternatives, especially for older Harley models. Pricing may be higher due to scarcity.

2. **Potential for Overpaying** Because it s NOS, sellers may charge a premium, especially if the plug is in high demand or the listing is from a collector-focused market.

3. **No Performance Upgrades** If you re looking for a power increase or improved ignition, this is a stock replacement and won t provide those benefits. Aftermarket iridium or platinum plugs may offer better longevity or spark quality.

4. **Age of the Packaging** While the plug itself is new, the original packaging may be old (e.g., 1970s 1980s), which could affect its appearance but not functionality.

5. **Mismatch with Modern Tuning** If your engine has been modified with modern components (e.g., high-flow heads, turbocharging, or electronic ignition), a stock plug may not be optimal. However, for stock or lightly modified Shovelhead/Panhead engines, it remains a solid choice.

6. **Potential for Counterfeit NOS** There is a risk of purchasing a plug that is mislabeled as NOS but is actually new or refurbished. Buying from a reputable seller (e.g., a Harley parts specialist or trusted online marketplace) reduces this risk.

7. **No Warranty (If Purchased Used or from a Private Seller)** While Champion typically offers warranties on new plugs, NOS listings from private sellers may not include any guarantees.

---

The **Champion 32305-48 NOS spark plug** is an excellent choice for Harley-Davidson Shovelhead and Panhead owners who prioritize **authenticity, reliability, and stock performance**. Its unused condition ensures it will function as intended without compromising the engine s original specifications. However, it is not ideal for those seeking performance gains or who prefer newer plug technologies.

If your primary goal is **restoration or maintaining originality**, this plug is a no-brainer. If you re open to alternatives (e.g., iridium plugs for better longevity or aftermarket options for performance), you may find better-suited choices. For most classic Harley enthusiasts, though, the NOS Champion plug remains a **safe, high-quality, and historically accurate** selection.

- **Buy it if:** You want a **stock-spec, unused plug** for a Shovelhead or Panhead engine, value NOS authenticity, and don t need performance upgrades.

- **Consider alternatives if:** You re modifying the engine, want longer plug life, or prefer newer technologies (e.g., iridium or platinum plugs).

- **Where to buy:** Purchase from a **trusted Harley parts dealer, eBay (with seller feedback), or a classic motorcycle specialty shop** to ensure authenticity and avoid counterfeit NOS listings.

- **Budget:** Expect to pay **$15 $30** depending on condition and seller, which is reasonable for a NOS part.

For most classic Harley owners, this plug is a **smart, reliable investment** that balances quality, compatibility, and historical accuracy.

Details:

This plug has never been installed or fired. 1966 1974 Shovelhead FL, FLH, early FX. The metal shell shows a light, even storage patina consistent with age. This is not just a replacement part its finishing detail component for serious restorations where authenticity matters.

The porcelain is bright with strong Champion branding, and the HARLEY DAVIDSON hex stamping crisp clearly legible. Rare, genuine OEM Harley Davidson spark plug manufactured by Champion, featuring the highly desirable HARLEY DAVIDSON casting on hex. If something looks wrong on my side please reach out to me. I will answer questions, provide more pictures and do research when needed just reach out to me.

I will also combine shipping. This is a transition era plug, representing the shift from early 18mm applications to more modern 14mm standard used on Panhead and Shovelhead engines. Correct for Harley Davidson model's using 14mm spark plug threads, including. Brand: Champion OEM for Harley Davidson Type: Spark Plug Thread Size: 14mm Feature: HARLEY DAVIDSON stamped hex Era: Late 1940s 1970s transition period Quantity: 1.

No box or washer included. CONDITION New Old Stock and well preserved.

part #: 3230548 price

• $33.00

specifications cyclesparkplugs:

• for models: Panhead, Shovelhead
• for makes: Harley
• brand: Champion
• mpn: 32305-48
• type: Spark Plug
• thread diameter: 14 Mm
• machine type: Dual Sport Motorcycle, Off-road Motorcycle, Street Motorcycle
• vintage part: Yes
• country of origin: United States

offer cyclesparkplugs:

• quantity: 1
• options: Ship-to-home
• best offers: True
• availability: In Stock
• started: March 20, 2026
• sold: 0

seller cyclesparkplugs:

• rating: 100.0%
• # reviews: 33
• city: Richmond, Virginia

payments cyclesparkplugs:

• other
• credit card: Diners-club
• wallet: Apple-pay

returns cyclesparkplugs:

• policy: No Returns

shipping cyclesparkplugs:

• service: USPS Ground Advantage
• type: Calculated
• class: Standard
• transit: 5-11 Days
• cost: $0.00
• carrier: USPS

general cyclesparkplugs:

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

Champion 32305-48 Is Similar To:

• 03-2221 Champion Norton Commando Nos (22.8% similar) They are the rubber cover only do not have inner metal part which would be attached to you plug wire high tension lead. These warmed up for about seconds in a microwave aid slipping them on the wire. Very rare correct for your commando. The price is for 2 covers...(December 20th, 2017)
• 13-0111 Champion Altenator Remanufacturered Nos Nib (21.7% similar) I am happy to comply. Nos nib genuine this product is. Some boxes may be rough but product guaranteed. Part is new in box. Certain parts such as bulk gaskets do not have packaging. Listed shipping costs are for continental us...(October 31st, 2018)
• 218 Champion Spark Plug Copper 037551139293 (39.7% similar) Champion copper plus spark plug 218RC78PYPBOX of 6 spark plugs plus technology began as an automotive OE plug, and today is widely used in a variety power equipment applications. Champion copper plus spark plugs are a great choice for OE-replacement on older automotive engines, lawn and garden ...(May 28th, 2017)
• 238 Champion Fi21508 Industrial Spark Plug (41.7% similar) Champion 238 FI21508 industrial spark plug pack of...(February 17th, 2017)
• 306 L86c Champion 1 Spark (29.1% similar) On jun at 13:01:49 PDT. Made in the us. New Champion 306 motorcycle L86C spark plug...(February 16th, 2018)
• 3069 Champion Spark Plug (37.3% similar) Spark plug American-made high-conductivity copper nucleus and wide base insulator with special thermal bonding 522 nickel alloy electrode control heat, fight fouling provide quick starts sold individually...(June 7th, 2017)
• 3069-rc7pycbx Champion Platinum Power Spark Plug Pack Of (38.8% similar) This listing is for 4 Champion platinum power spark plug pack of 4, part RC7PYCBX. However, parts may not be in the original packaging...(July 20th, 2018)
• 309 Champion Copper Plus Resistor Spark Plugs Box 0037551004928 (36.9% similar) Actual product may differ from the item shown in photograph. Thread size inch. Seat type: gasket. Plug type: H8C. On the continent of north America. Ground electrode material: nickel copper alloy. Electrode material: nickel copper alloy. Electrode diameter inch: thread reach photos are for reference...(July 18th, 2018)
• 312 Champion Copper Plus Spark Plug 037551616367 (38.1% similar) Electrode material: nickel copper alloy. Photos are for reference only. Patented ultra seal coated shell for rust prevention. Gap mm: seat type: gasket. Thread size mm: patented SAC-9 semi-conductor resistor for maximum emir and RIF suppression. Installed height : actual product may differ from the...(April 28th, 2018)
• 312 Champion Copper Plus Spark Plugs 037551432318 (39.4% similar) on the continent of north America. Taper diameter inch. Insulator projection inch. Electrode material: nickel copper alloy hex size inch. Copper plus spark plug has a core electrode that allows for accurate control of heat range, optimizing performance, and longevity the patented ultra seal coated ...(August 22nd, 2018)
• 32-0160 V-twin Manufacturing Champion Spark (23.1% similar) Spark plug gap measures...(November 1st, 2017)