NGK SPARK PLUGS DCPR7E 3932 10 PACK

OVERVIEW

These NGK DCPR7E spark plugs deliver reliable ignition performance and precise fuel combustion for demanding motorcycle engines. Engineered as a 10-pack replacement set, they utilize high-strength materials and versatile thermal properties to maintain stable operation across diverse riding styles. Designed specifically for a wide range of Harley-Davidson models, these plugs ensure consistent firing and efficient energy transfer under high-load conditions.

ENGINEERING & PERFORMANCE

These spark plugs feature a wide operating heat range that effectively eliminates fouling during low-temperature operation and prevents pre-ignition when engine temperatures escalate. The robust internal design incorporates high alumina ceramic insulators to enhance heat dissipation and provide exceptional electrical insulation, supported by a deep-seated copper core that expands the functional temperature window. A nickel alloy welding tip further extends service life, ensuring durable performance and superior construction quality tailored for sustained power delivery.

KEY FEATURES

• NGK DCPR7E spark plugs packaged in a convenient 10-count box.
• Versatile wide operating heat range suited for varied applications and riding styles.
• High alumina ceramic insulator improves thermal dissipation.
• Dense ceramic material enhances electrical insulation properties.
• Deep-seated copper core provides a broader thermal operating range.
• Nickel alloy center electrode tip contributes to extended service life.
• Resistance to fouling under cool operating temperatures.
• Prevention of pre-ignition during high-heat engine loads.
• Superior construction designed for sustained power delivery.
• Compatible with numerous Harley-Davidson touring, softail, and sportster platforms.
• Replacement part number references DCPR7E and 3932.

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: DCPR7E / 3932 Spark Plugs
• Component Type: Spark Plug
• Material: High Alumina Ceramics, Copper Core, Nickel Alloy Tip
• Supported Years: 2005–2016
• Compatible Trims: Softail Slim, Fat Boy, Road Glide Ultra, Electra Glide Ultra Classic, Street Glide, Sportster Seventy-Two, Iron 883, Road King, and various other Harley-Davidson EFI and non-EFI models within the specified year range.

FITMENT

• Harley-Davidson 883 Custom EFI XLC (2007–2009)
• Harley-Davidson 883 EFI XL (2007)
• Harley-Davidson 883 Low EFI XLL (2005–2010)
• Harley-Davidson 883 Roadster XLR (2005–2007)
• Harley-Davidson 883 SuperLow XLL (2005–2006), (2011–2016)
• Harley-Davidson 1200 Custom EFI XLC (2007–2016)
• Harley-Davidson 1200 Low EFI XLL (2006–2010)
• Harley-Davidson 1200 Nightster XLN (2007–2012)
• Harley-Davidson 1200 Roadster EFI XLR (2007–2008)
• Harley-Davidson 1200 XR (2009–2010)
• Harley-Davidson Blackline FXS (2011–2013)
• Harley-Davidson Breakout FXSB (2013–2016)
• Harley-Davidson Electra Glide Classic EFI FLHTCI (2007–2016)
• Harley-Davidson Electra Glide Standard EFI FLHTI (2007–2009)
• Harley-Davidson Electra Glide Ultra Classic EFI FLHTCUI (2007–2016)
• Harley-Davidson Electra Glide Ultra Classic Low FLHTCUL (2015–2016)
• Harley-Davidson Electra Glide Ultra Limited FLHTK (2010–2016)
• Harley-Davidson Electra Glide Ultra Limited Low FLHTKL (2015–2016)
• Harley-Davidson Fat Bob FXDF (2008–2016)
• Harley-Davidson Fat Boy 15th Anniversary FLSTF (2005)
• Harley-Davidson Fat Boy EFI FLSTFI (2007–2016)
• Harley-Davidson Fat Boy Lo FLSTFB (2010–2016)
• Harley-Davidson Fat Boy S FLSTFBS (2016)
• Harley-Davidson Freewheeler FLRT (2015–2016)
• Harley-Davidson Iron 883 XLN (2009–2016)
• Harley-Davidson Low Rider EFI FXDL (2007–2009), (2015–2016)
• Harley-Davidson Road Glide FLTR (2007–2009)
• Harley-Davidson Road Glide Custom FLTRX (2010–2016)
• Harley-Davidson Road Glide Special FLTRXS (2015–2016)
• Harley-Davidson Road Glide Ultra FLTRU (2011–2016)
• Harley-Davidson Road King EFI FLHR (2007–2016)
• Harley-Davidson Road King Custom FLHRS (2007)
• Harley-Davidson Softail Custom EFI FXSTC (2007–2010)
• Harley-Davidson Softail Deluxe EFI FLSTNI (2007–2016)
• Harley-Davidson Softail Deluxe FLSTN (2005–2006)
• Harley-Davidson Softail Heritage Classic EFI FLSTCI (2007–2016)
• Harley-Davidson Softail Heritage EFI FLSTI (2006)
• Harley-Davidson Softail Night Train EFI FXSTBI (2006–2009)
• Harley-Davidson Softail Rocker C FXCWC (2008–2011)
• Harley-Davidson Softail Rocker FXCW (2008–2009)
• Harley-Davidson Softail Springer EFI FXSTSI (2006)
• Harley-Davidson Softail Springer Classic EFI FLSTSCI (2005–2007)
• Harley-Davidson Softail Springer Classic FLSTSC (2005–2006)
• Harley-Davidson Softail Springer FXSTS (2006)
• Harley-Davidson Softail Standard EFI FXSTI (2006–2007)
• Harley-Davidson Softail Standard FXST (2006)
• Harley-Davidson Street Bob FXDB (2006–2016)
• Harley-Davidson Street Glide FLHX (2006, 2009)
• Harley-Davidson Street Glide EFI FLHX (2007–2016)
• Harley-Davidson Street Glide Special FLHXS (2014–2016)
• Harley-Davidson Street Glide Trike FLHXXX (2010–2011)
• Harley-Davidson Super Glide Custom EFI FXDCI (2005), (2008–2014)
• Harley-Davidson Super Glide Custom FXDC (2005)
• Harley-Davidson Super Glide EFI FXDI (2005–2006), (2007–2008)
• Harley-Davidson Super Glide FXD35 (2006)
• Harley-Davidson SuperLow 1200 XLT (2014–2016)
• Harley-Davidson Switchback FLD (2012–2016)
• Harley-Davidson Tri Glide Ultra Classic FLHTCUTG (2009–2016)
• Harley-Davidson Wide Glide EFI FXDWGI (2008), (2010–2016)
• Harley-Davidson Sportster Forty-Eight XLX (2010–2016)
• Harley-Davidson Sportster 1200 XL 50 (2007)
• Harley-Davidson Sportster 1200 X XR (2011–2012)
• Harley-Davidson Sportster Seventy-Two XLV (2012–2016)

WHY RIDERS CHOOSE THIS

Riders rely on these NGK spark plugs because the wide operating heat range consistently prevents fouling during city riding and protects against pre-ignition under hard acceleration or heavy loads. The combination of high alumina ceramic insulation and a deep-seated copper core ensures stable electrical performance and rapid heat dissipation, delivering reliable ignition timing across the entire rpm spectrum. With a nickel alloy tip engineered for extended service life and superior construction built for serious power, these plugs reduce maintenance intervals while maintaining peak combustion efficiency. Designed to replace OEM components on dozens of Harley-Davidson models, they provide a direct fit that restores strong starts and smooth operation without requiring modifications.