Brand Name: M MATI

Origin: Mainland China

For ATV Brand/Model: Harley

Special Features: Ignition Coil & Spark Plug wire Cap

MPN :  31696-07A 31960-99A  31983-00C   31981-99C

Package :   

Ignition Coil x1    Spark Plug Wire Cap 1 x1   Spark Plug Wire Cap X2

Warranty : 1 year

Condition:  New

Placement on Vehicle :   Electronic Control

Ignition Coil & Spark Plug wire Cap For FXD FLD FXST FXSB FXSE Dyna Low Rider Super Glide CVO Softail Fat Boy  2007-2017 31696-07A

Fit for following Harley Motorcycle

FXD Dyna Super Glide 2012-2013
FXDB Street Bob 2012-2017
FXDC Super Glide Custom 2012-2014
FXDF Fat Bob 2012-2017
FXDWG Dyna Wide Glide 2012-2017
FXDLS Low Rider S 2016-2017
FXDL Dyna Low Rider 2012-2017
FXDL Low Rider 2014-2017

FLD Switchback 2012-2016
FLSTSE CVO Softail Convertible 2010-2012(ALL Edition)
FLSTSC Softail Springer Classic 2007
FLSTSB Cross Bones 2008-2011
FLSTS Heritage Springer 2007
FLSTNSE CVO Softail Deluxe 2014-2015
FLSTN Softail Deluxe 2007-2017
FLSTFBS Fat Boy S 2016-2017
FLSTFB Fat Boy Lo 2010-2017
FLSTF Fat Boy 2007-2017
FLSTC Heritage Softail Classic 2007-2017
FLST Heritage Softail 2008-2010

FXSTB Night Train 2007-2009
FXSTC Softail Custom 2007-2010
FXSTD Softail Deuce 2007
FXSTSSE Screamin Eagle Softail Springer 2007-2008(ALL Edition)
FXSTSSE3 CVO Softail Springer 2009
FXST Softail Standard 2007-2015

FXSBSE CVO Breakout 2013-2014
FXSB Breakout 2017
FXSE CVO Pro Street Breakout 2016-2017

🛠️ Installation Tips

• Dielectric Grease is Essential: Apply a small dab of dielectric grease inside the spark plug boot and the coil terminal. This prevents the rubber from "bonding" to the plug and protects the electrical connection from moisture and vibration-induced corrosion.

• Check Primary Resistance: Before mounting, ensure the primary plug (the 4-pin or 2-pin connector) is clean. Even a tiny bit of road grime in the connector can cause a "stumble" that feels like a bad coil but is actually just a poor connection.

• Routing and Clearance: When installing the new wires, ensure they do not touch the cylinder cooling fins or the exhaust headers. The high heat will melt the silicone insulation, leading to a short circuit and engine misfires.

• The "Click" Test: When pushing the wire onto the coil and the spark plug, listen and feel for a distinct "click." If you don't hear it, the metal terminal isn't fully seated, which can lead to arcing and "radio noise" in your bike's electronics.

• Disconnect the Battery: Always disconnect the negative battery terminal before swapping the coil. This prevents accidental shorting and protects the ECM (Electronic Control Module) from voltage spikes during the swap.

🔍 Troubleshooting Guide

Issue	Possible Cause	Solution
Engine Misfire / Popping	Cracked coil housing or bad wire.	Inspect the coil for "hairline cracks." Under high load, electricity will jump through these cracks to the frame instead of the spark plug. Replace with this kit to restore spark.
Hard Starting (Hot)	Internal coil thermal failure.	If the bike starts fine cold but won't start after a gas station stop, the coil's internal copper windings are likely expanding and shorting when hot.
Backfiring on Deceleration	Weak spark / Unburnt fuel.	If the spark is too weak to ignite the fuel in the cylinder, the raw gas ignites in the exhaust pipe. Fresh wires and a high-output coil usually solve this.
"Check Engine" Light (Ion Sense)	Incompatible or worn coil.	Modern Harleys use the coil to "sense" combustion (Ion Sensing). A faulty coil will trigger a P0374 or similar code. This 31696-07A spec unit is designed to communicate correctly with the Delphi ECM.
Stumbling Under Heavy Load	Ignition "leakage" at the boots.	Open the throttle in a high gear; if the bike stumbles, your wires are likely leaking voltage. New 8mm or 10mm wires provide the insulation needed for high-torque pulls.