Spark Plug
Eliminate sluggish throttle response, rough idling, and frustrating cold-start failures by upgrading to a premium ATV spark plug engineered for demanding off-road duty cycles. Unlike passenger cars that cruise at stable, low RPMs, powersports single and twin-cylinder engines run continuously at high RPMs, extreme temperatures, and under heavy loads. At CG ATV & UTV Parts Shop, we supply a comprehensive range of high-performance iridium, platinum, and standard copper-core spark plugs optimized for efficient combustion.
Our domestic supply chain carefully manages and pulls from our live warehouse stock, ensuring immediate order verification and fast daily shipping directly to your garage workshop. These specialized ignition plugs feature advanced anti-corrosion trivalent metal plating and high-grade alumina silicate ceramic insulators to prevent electrical flashover in wet riding environments. Whether you are running a hard-working utility quad or a high-revving sport side-by-side, our spark plugs provide a clean, consistent spark to maximize fuel efficiency and engine output.
Moose Racing Spark Plug Cap / Wire Polaris Predator / Scrambler / Sportsman 2000-2019
Moose Racing Spark Plug Cap / Wire Polaris Sportsman
NGK Spark Plugs – Iridium IX
NGK Spark Plugs – Laser Iridium
NGK Spark Plugs – Resistor
NGK Spark Plugs – Standard
NGK Spark Plugs – Special Types
NGK Spark Plugs – G & GV Racing
Moose Racing Spark Plug Cap/Wire Polaris RZR 4 / S / XP 2014-2020
NGK Standard Spark Plugs
Moose Racing Spark Plug Cap / Wire Polaris RZR / Ranger / General 2011-2020
Moose Racing Spark Plug Cap / Wire Polaris Sportsman / RZR / Ranger 2007-2014
Acoustic & Thermal Engineering: Iridium vs. Standard Cores
Choosing the correct UTV spark plug core material directly dictates your combustion efficiency and service lifespan on the trail. While standard copper plugs offer excellent conductivity, their large electrode diameters degrade quickly under continuous, high-heat off-road operations, widening the plug gap and causing high-RPM misfires. Premium iridium spark plugs feature a laser-welded fine-wire center electrode. Because iridium is extremely dense and has a melting point over 2,400 degrees Celsius, it requires less electrical voltage to create a powerful spark while remaining highly resilient to spark erosion.
This fine-wire design focuses the electrical energy, resulting in more complete combustion, cleaner emissions, and reliable throttle performance even when navigating deep mud or high-altitude mountain terrain.
Direct Live Inventory Sourcing Directory
Coordinate corresponding electronic, safety, and cockpit ergonomics upgrades directly from our available stock:
- Chassis Altitude Modifications: Safeguard your fresh engine ignition performance when crossing deep mud by installing a premium UTV lift kit.
- High-Stability Ride Tracking: Prevent severe chassis bottoming out from disturbing engine electrical lines with adjustable performance shock absorbers.
- Belly Frame Shielding: Deflect jagged rocks away from your low-slung engine casing using heavy-duty full-body skid plates.
- Side Clearance Protection: Prevent tight trail trees from pressing against your chassis with rugged off-road rock sliders.
- Cockpit Weather Shielding: Prevent heavy rain and overhanging mud from saturating your cockpit by adding a durable roll-up soft windshield.
Torque Specifications, Gapping Rules, & Maintenance Intervals
Always verify the electrode gap using a dedicated feeler gauge before threading a new spark plug into your cylinder head. Even pre-gapped plugs can shift inside their packaging during shipping. Clean away all dirt and debris from around the spark plug well using compressed air before removing the old plug to prevent loose particles from falling inside the combustion chamber. Thread the new plug in by hand first to prevent cross-threading the soft aluminum threads of the cylinder head, then use a calibrated torque wrench to tighten the plug to the exact manufacturer foot-pound specification. Never over-torque the plug, as this can distort the internal steel shell or crack the ceramic insulator, leading to catastrophic engine damage. If your machine is regularly exposed to deep water crossings or mud, inspect the plug boots for moisture and apply a thin layer of dielectric grease to keep the connection water-tight. For official thread geometry and heat-range categorization rules, consult the technical guides managed by the SAE International Powertrain and Ignition Systems Committees.