Alter Ego Motorcycle Supply — Serving Riders Since 1973

Kansas City, MO & Shawnee, KS · Since 1973

PARTS. PERFORMANCE.
PASSION.

Find the parts and gear for your next ride.

U.S. shipping  ·  Free Kansas City pickup when ready

SELECT YOUR RIDEFind parts for your motorcycle

Garage 0

Your garage

Save up to 10 motorcycles in this browser. Bikes are not synced to your account or other devices.

    Choose year, make and model. Matching parts open automatically when you choose a model.

    Enable JavaScript to choose your motorcycle and use the garage.

    HARDDRIVE Hd 40V-Hp Single Fire Coil Twin Cam EFI — 10-2003

    HARDDRIVE Hd 40V-Hp Single Fire Coil Twin Cam EFI — 10-2003

    $105.95

    Check vehicle fitment →

    Optional. This browser remembers up to 20 items for 30 days. Uncheck to clear it. Privacy policy

    HARDDRIVE Hd 40V-Hp Single Fire Coil Twin Cam EFI — 10-2003. One individual item. Verified WPS motorcycle applications are listed below. Match exact year, model, connector, position and manufacturer number before ordering.

    In stock

    SKU: WP820-60409
    Category:
    Brands:

    Description

    HARDDRIVE Hd 40V-Hp Single Fire Coil Twin Cam EFI — 10-2003

    Features and specifications

    • Increased spark performance 
    • Dual Fire and Single Fire applications 
    • ION Sense feedback for perfect compatibility with stock Harley EFI ECU 
    • Engineered and produced by an Industry leading manufacturer
    • High power 30,000 volt coil typically increases peak spark voltage by 20% or more
    • Improves starting, stops high speed miss fires, increases mileage and overall performance

    Application

    Verified WPS motorcycle applications are listed below. Match exact year, model, connector, position and manufacturer number before ordering.

    View checked motorcycle models and years
    • Harley Davidson FLHR Road King: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLHRC Road King Classic: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLHRS Road King Custom: 2004, 2005, 2006
    • Harley Davidson FLHRSE CVO Road King: 2002, 2003
    • Harley Davidson FLHT Electra Glide: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLHTC Electra Glide Classic: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLHTCSE CVO Electra Glide: 2004, 2005
    • Harley Davidson FLHTCU Electra Glide Ultra Classic: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLHTCUSE CVO Electra Glide Ultra Classic: 2006
    • Harley Davidson FLHX Street Glide: 2006
    • Harley Davidson FLS Softail Slim: 2012, 2013, 2014, 2015, 2016, 2017
    • Harley Davidson FLSS Softail Slim S: 2016, 2017
    • Harley Davidson FLST Softail Heritage: 2006
    • Harley Davidson FLSTC Softail Heritage Classic: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLSTF Softail Fat Boy: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLSTFSE CVO Softail Fat Boy: 2005, 2006
    • Harley Davidson FLSTN Softail Deluxe: 2005, 2006
    • Harley Davidson FLSTS Softail Heritage Springer: 2001, 2002, 2003
    • Harley Davidson FLSTSC Softail Springer Classic: 2005, 2006
    • Harley Davidson FLTR Road Glide: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FLTRSE CVO Road Glide: 2001
    • Harley Davidson FXD Dyna Super Glide: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXDB Dyna Street Bob: 2006
    • Harley Davidson FXDC Dyna Super Glide Custom: 2005, 2006
    • Harley Davidson FXDL Dyna Low Rider: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXDWG Dyna Wide Glide: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXDWGSE CVO Dyna Switchblade: 2001, 2002
    • Harley Davidson FXDX Dyna Super Glide Sport: 2001, 2002, 2003, 2004, 2005
    • Harley Davidson FXDXT Dyna Super Glide T-Sport: 2001, 2002, 2003
    • Harley Davidson FXST Softail: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXSTB Softail Night Train: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXSTD Softail Deuce: 2001, 2002, 2003, 2004, 2005, 2006
    • Harley Davidson FXSTDSE CVO Softail Deuce: 2003, 2004
    • Harley Davidson FXSTS Softail Springer: 2001, 2002, 2003, 2004, 2005, 2006

    WPS application data checked November 5, 2026. Modified motorcycles may require different components.

    What you receive

    One individual item.

    Product identification

    Brand: HARDDRIVE
    Manufacturer part: 10-2003
    WPS part: 820-60409

    Product photos are manufacturer reference images. Only the stated item or complete retail kit is included.

    Vehicle fitment

    WPS lists this part for the following vehicles. Match your exact model and year.

    Follow the position, mounting and installation notes in the product description. Modified vehicles may require different parts.

    Compatible vehicle years, makes and models
    YearsMakeModel
    2001–2006Harley DavidsonFLHR Road King
    2001–2006Harley DavidsonFLHRC Road King Classic
    2004–2006Harley DavidsonFLHRS Road King Custom
    2002–2003Harley DavidsonFLHRSE CVO Road King
    2001–2006Harley DavidsonFLHT Electra Glide
    2001–2006Harley DavidsonFLHTC Electra Glide Classic
    2004–2005Harley DavidsonFLHTCSE CVO Electra Glide
    2001–2006Harley DavidsonFLHTCU Electra Glide Ultra Classic
    2006Harley DavidsonFLHTCUSE CVO Electra Glide Ultra Classic
    2006Harley DavidsonFLHX Street Glide
    2012–2017Harley DavidsonFLS Softail Slim
    2016–2017Harley DavidsonFLSS Softail Slim S
    2006Harley DavidsonFLST Softail Heritage
    2001–2006Harley DavidsonFLSTC Softail Heritage Classic
    2001–2006Harley DavidsonFLSTF Softail Fat Boy
    2005–2006Harley DavidsonFLSTFSE CVO Softail Fat Boy
    2005–2006Harley DavidsonFLSTN Softail Deluxe
    2001–2003Harley DavidsonFLSTS Softail Heritage Springer
    2005–2006Harley DavidsonFLSTSC Softail Springer Classic
    2001–2006Harley DavidsonFLTR Road Glide
    2001Harley DavidsonFLTRSE CVO Road Glide
    2001–2006Harley DavidsonFXD Dyna Super Glide
    2006Harley DavidsonFXDB Dyna Street Bob
    2005–2006Harley DavidsonFXDC Dyna Super Glide Custom
    2001–2006Harley DavidsonFXDL Dyna Low Rider
    2001–2006Harley DavidsonFXDWG Dyna Wide Glide
    2001–2002Harley DavidsonFXDWGSE CVO Dyna Switchblade
    2001–2005Harley DavidsonFXDX Dyna Super Glide Sport
    2001–2003Harley DavidsonFXDXT Dyna Super Glide T-Sport
    2001–2006Harley DavidsonFXST Softail
    2001–2006Harley DavidsonFXSTB Softail Night Train
    2001–2006Harley DavidsonFXSTD Softail Deuce
    2003–2004Harley DavidsonFXSTDSE CVO Softail Deuce
    2001–2006Harley DavidsonFXSTS Softail Springer

    Source: WPS vehicle-fitment data · WPS part 820-60409 · Checked November 5, 2026.

    Additional information

    Weight 3 lbs
    Dimensions 5 × 3 × 4 in

    Reviews

    There are no reviews yet.

    Be the first to review “HARDDRIVE Hd 40V-Hp Single Fire Coil Twin Cam EFI — 10-2003”

    Your email address will not be published. Required fields are marked *