OEM Harley Davidson Rear Spark Plug Cable Wire Twin Cam Dyna Softail 31960-99
Part #: 31960-99
Harley-Davidson part number 31960-99 is the OEM rear spark plug wire for various Twin Cam models.
It is commonly used in conjunction with the front spark plug wire, part number 31981-99.
- Wire Diameter: Standard 8 mm for the OEM version. High-performance aftermarket replacements often use 8.8 mm for extra insulation.
- Temperature Rating: Designed to withstand high engine heat, with aftermarket versions typically rated up to 450° F (232° C).
- Core Material: High-suppression magnetic core that maintains high energy delivery while preventing RFI (Radio Frequency Interference) with your bike's electronics.
- Boot Type: Features a 90-degree boot at the coil end and a standard spark plug boot at the other to fit the rear cylinder reach on Twin Cam engines.
- Resistance: Engineered for low resistance to ensure maximum spark voltage reaches the plug.
Fitment: Harley-Davidson motorcycles equipped with Twin Cam engines.
- Dyna Models (1999–2017): Includes the Low Rider (FXDL), Wide Glide (FXDWG), Super Glide (FXD), Street Bob (FXDB), and Fat Bob (FXDF).
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Softail Models (2000–2017): Fits most Softail models like the Fat Boy (FLSTF).
- Exclusions: Typically does not fit FXCW (Rocker), FXCWC (Rocker C), FXS (Blackline), or FXSB (Breakout) models.
Key Technical Fitment Specs
- Engine Type: Specifically for Twin Cam 88, 96, and 103 engines.
- Placement: Rear cylinder only. It is shorter than the front wire because the ignition coil is located closer to the rear spark plug on these frames.
- Terminals: Features a 90-degree boot at the coil end to provide clearance under the seat or frame rails.
Please make sure of fitment before buying.
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032026 CC