MOTO1988 Ignition Coil & Spark Plug Assembly for Polaris Ranger/Sportsman 400-500 (OEM 3089239) Direct-Fit, Specified Resistance

MOTO1988's ignition coil and spark plug assembly replaces OEM 3089239 to restore reliable spark performance in compatible Polaris Ranger and Sportsman 400–500 ATVs from 2004–2014.

If your Polaris is showing weak starts, misfires, or inconsistent throttle response, a worn ignition coil or degraded spark plug connection can be the culprit. This MOTO1988 replacement unit is engineered as a direct-fit service part for specific Polaris Ranger and Sportsman models, matching factory electrical characteristics so installation is straightforward and predictable. The component is specified with clear primary and secondary resistance values to help verify compatibility and diagnose ignition issues before you buy.

Will this ignition coil fit my Polaris Ranger or Sportsman?

Check model and year compatibility first—this kit is intended for a defined range of Ranger and Sportsman ATVs. Confirm your machine’s model year against the listed fitment to avoid purchasing the wrong part.

• Sportsman 400: 2005–2014
• Sportsman 450: 2006–2007
• Sportsman 500: 2004–2013
• Ranger 400: 2010–2014; Ranger 500: 2004–2009
• OEM reference number: 3089239—match this to your parts manual for assurance

How do the electrical specs affect performance and diagnosis?

The MOTO1988 coil assembly is supplied with manufacturer-stated resistances so you can measure and compare with your vehicle’s expected values. Proper primary and secondary resistance helps ensure consistent spark energy and makes on-bike troubleshooting more accurate.

• Primary resistance: approximately 0.47 Ω
• Secondary resistance without cap: about 3.9 kΩ
• Secondary resistance with spark plug cap installed: about 9.3 kΩ
• Use a digital multimeter to confirm these readings during diagnosis

What should I know about installation and pre-purchase checks?

This part is designed as a direct replacement, but confirming fitment and following basic safety steps prevents installation issues. If you’re unsure, compare the product photos and the OEM number against the coil on your ATV before placing an order.

• Compare the part to your existing coil and connector layout
• Ensure the OEM number 3089239 matches your parts diagram
• Disconnect the battery and follow vehicle service manual steps during replacement
• Test resistance values before and after installation for verification

Who is this for? Riders, DIY mechanics, and fleet managers maintaining Polaris Ranger or Sportsman 400–500 machines who need a cost-effective, drop-in ignition coil and spark plug assembly. It’s suited for anyone replacing a failed or aging ignition unit and for technicians who require clear electrical specs for accurate diagnostics. If your machine is within the listed years and you matched the OEM number, this MOTO1988 unit gives a practical route to restoring ignition function with straightforward installation and post-sale support.