NGK SPARK PLUGS BKR7E 4644 10 PACK

OVERVIEW

NGK BKR7E spark plugs deliver reliable ignition performance for critical starting power and consistent combustion stability across diverse riding conditions. These spark plugs utilize a deep-seated copper core paired with high alumina ceramics to ensure precise thermal management and superior electrical insulation under heavy loads. Designed as a direct replacement for selected Polaris snowmobile, ATV, and UTV applications, this component maintains engine efficiency through rigorous operation.

ENGINEERING & PERFORMANCE

The BKR7E design incorporates a versatile operating heat range that actively prevents fouling during cool-running conditions while protecting against pre-ignition when exhaust temperatures rise. High alumina ceramic elements surround the electrode geometry to accelerate heat dissipation and maintain stable electrical insulation under sustained demand. A deep-seated copper core extends the effective thermal window, allowing the plug to self-clean efficiently without sacrificing durability in extreme environments. The nickel alloy tip reinforces the electrode structure to resist wear and maintain consistent spark delivery over extended service intervals.

KEY FEATURES

• NGK BKR7E Spark Plug
• Part Number 4644
• Sold as a 10-Pack
• High alumina ceramics for enhanced heat dissipation and electrical insulation
• Deep-seated copper core design supports a wider operating heat range
• Nickel alloy tip construction promotes extended service life
• Versatile heat range helps prevent fouling and pre-ignition
• Optimized for Polaris ATV, UTV, and snowmobile engines

TECHNICAL SPECIFICATIONS

• Brand: NGK
• Part Name: BKR7E Spark Plug
• Component Type: Spark Plug
• Material: High alumina ceramics, deep-seated copper core, nickel alloy tip
• Pack Quantity: 10 Plugs
• Supported Years: 1999–2019
• Compatible Trims: ACE 500, Ranger 500/600/700/800 / EFI / XP / Crew / HD / LE / EPS / Turbo / Sportsman 600/700/800 / 6x6 Big Boss / RZR 4 800 / S 800 / FST IQ / Indy SwitchBack / Frontier Touring

FITMENT

• 1999–2000 Polaris Sportsman 335
• 2002–2006 Polaris Sportsman 700 Twin
• 2003–2005 Polaris Frontier Classic
• 2003–2005 Polaris Frontier Touring
• 2003–2005 Polaris Sportsman 600 Twin 4x4
• 2005–2009 Polaris Ranger XP 700
• 2006–2007 Polaris Sportsman 700 MV
• 2006–2009 Polaris Ranger 6x6 700 EFI
• 2007 Polaris FST IQ
• 2007 Polaris FST IQ LX
• 2007 Polaris FST IQ Cruiser
• 2007–2009 Polaris FST IQ Touring
• 2007 Polaris Indy SwitchBack FST 750 w/144" Track
• 2007 Polaris Sportsman 700 EFI
• 2007 Polaris Sportsman 800 EFI Deluxe
• 2007, 2009 Polaris Sportsman 800 EFI X2
• 2007 Polaris Sportsman 800 EFI X2 Deluxe
• 2008 Polaris FST IQ Cruiser
• 2008–2009 Polaris Ranger Crew 700
• 2008–2009 Polaris Sportsman 800 EFI Touring
• 2008, 2010 Polaris Ranger RZR 800
• 2009 Polaris Ranger HD 700
• 2009–2011 Polaris Sportsman 800 EFI 6x6 Big Boss
• 2009–2010 Polaris RZR S 800 4x4
• 2009–2014 Polaris Ranger 6x6 800
• 2009–2014 Polaris Sportsman 800 EFI
• 2009, 2011–2013 Polaris RZR 800 4x4
• 2010–2012 Polaris Ranger 800 XP
• 2010–2012 Polaris Ranger 800 XP EPS
• 2010–2012 Polaris RZR 4 800 Robby Gordon Edition
• 2010–2013 Polaris RZR 800 EPS LE 4x4
• 2010 Polaris Ranger 800 HD
• 2010–2016 Polaris Ranger 6x6 800
• 2010–2014 Polaris Ranger 800 Crew
• 2011 Polaris Ranger RZR 800 S
• 2011–2012 Polaris Ranger 800 HD EPS
• 2011–2012 Polaris Ranger 800 Crew EPS
• 2011–2012 Polaris RZR 4 800 EPS LE Robby Gordon Edition
• 2011–2013 Polaris Turbo IQ LXT
• 2011 Polaris Ranger RZR 4 800
• 2011 Polaris Turbo IQ LX
• 2012 Polaris Ranger 800 XP EPS LE
• 2012 Polaris Ranger 800 XP LE
• 2012–2014 Polaris Sportsman 800 6x6 Big Boss
• 2012–2013 Polaris RZR 800 LE
• 2012–2013 Polaris RZR S 800 LE
• 2012 Polaris Sportsman Forest 800
• 2013–2014 Polaris Ranger 800 EFI Mid-Size
• 2013 Polaris Ranger 800 EFI Mid-Size LE
• 2013 Polaris Ranger 800 LE 4x4
• 2013 Polaris RZR 4 800 EPS LE 4x4
• 2014 Polaris RZR 4 800 EPS LE
• 2014 Polaris RZR 800
• 2014 Polaris RZR 800 EPS LE
• 2014 Polaris RZR 800 XC Edition
• 2014 Polaris RZR S 800
• 2014 Polaris RZR S 800 EPS LE Fox 4x4
• 2017–2018 Polaris Ranger 500 Mid-Size EFI 4x4
• 2019 Polaris ACE 500

WHY RIDERS CHOOSE THIS

Riders trust NGK BKR7E spark plugs because the engineering prioritizes combustion consistency over broad marketing claims. The combination of a deep-seated copper core and high alumina ceramics gives operators confidence that the plug will handle temperature fluctuations common in off-road terrain without fouling up or suffering pre-ignition damage. The nickel alloy tip resists degradation, meaning fewer trips to the parts bin and more time on the trails. Because the heat range accommodates a vast array of Polaris models spanning decades, mechanics and enthusiasts know they can stock a single part number to cover multiple platforms in their shed.