Harley-Davidson Engine Parts & Performance Upgrades

Get more out of your Harley-Davidson with engine and performance parts from Kruesi Originals. Explore camshafts, cam chest kits, air cleaners, fuel system components, and tuning upgrades.

Find engine components for Twin Cam, Milwaukee-Eight, Sportster, and other Harley-Davidson motorcycles to support your performance build.

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  • All Balls Fuel Pump Rebuild Kit

    All Balls Fuel Pump Rebuild Kit

    All Balls Fuel Pump Rebuild Kit

    $103.61
    Sale price  $103.61 Regular price 
  • Drag Specialties Mini Crankcase Vent Filter

    Drag Specialties Mini Crankcase Vent Filter

    Drag Specialties Mini Crankcase Vent Filter

    $19.95
    Sale price  $19.95 Regular price 
  • Complete Twin Cam Rocker Box Gasket Kit

    Complete Twin Cam Rocker Box Gasket Kit

    Complete Twin Cam Rocker Box Gasket Kit

    $46.15
    Sale price  $46.15 Regular price 
  • Twin Cam Head Gaskets for 88", 95", 96" & 103"

    Twin Cam Head Gaskets for 88", 95", 96" & 103"

    Twin Cam Head Gaskets for 88", 95", 96" & 103"

    $61.90
    Sale price  $61.90 Regular price 
  • Oil Pan Gasket for 1999-2017 Dyna Models

    Oil Pan Gasket for 1999-2017 Dyna Models

    Oil Pan Gasket for 1999-2017 Dyna Models

    $13.60
    Sale price  $13.60 Regular price 
  • Arlen Ness Big Sucker Stage 1 Air Cleaner for M8 Softail Models

    Arlen Ness Big Sucker Stage 1 Air Cleaner for M8 Softail Models

    Arlen Ness Big Sucker Stage 1 Air Cleaner for M8 Softail Models

    $319.95
    Sale price  $319.95 Regular price 
  • Barnett Clutch Pack & Srings

    Barnett Clutch Pack & Srings

    Barnett Clutch Pack & Srings

    $291.56
    Sale price  $291.56 Regular price 
  • Andrews 485 Camshaft M8

    Andrews 485 Camshaft M8

    Andrews 485 Camshaft M8

    $268.95
    Sale price  $268.95 Regular price 
  • Arlen Ness Big Sucker Stage 1 Air Cleaner for 1999–2016 Twin Cam Touring

    Arlen Ness Big Sucker Stage 1 Air Cleaner for 1999–2016 Twin Cam Touring

    Arlen Ness Big Sucker Stage 1 Air Cleaner for 1999–2016 Twin Cam Touring

    $239.95
    Sale price  $239.95 Regular price 
  • S&S Billet Head Breather Kit for 2017+ M8 Models

    S&S Billet Head Breather Kit for 2017+ M8 Models

    S&S Billet Head Breather Kit for 2017+ M8 Models

    $299.95
    Sale price  $299.95 Regular price 
  • S&S Head Breather Kit for Twin Cam

    S&S Head Breather Kit for Twin Cam

    S&S Head Breather Kit for Twin Cam

    $224.95
    Sale price  $224.95 Regular price 
  • Feuling Reaper 538 Camshaft for M8 Models

    Feuling Reaper 538 Camshaft for M8 Models

    Feuling Reaper 538 Camshaft for M8 Models

    $329.95
    Sale price  $329.95 Regular price 
  • Feuling Reaper 487 Camshaft for M8 Models

    Feuling Reaper 487 Camshaft for M8 Models

    Feuling Reaper 487 Camshaft for M8 Models

    $319.95
    Sale price  $319.95 Regular price 
  • 2004-2022 Sportster Front Motor Mount Isolators

    2004-2022 Sportster Front Motor Mount Isolators

    2004-2022 Sportster Front Motor Mount Isolators

    $69.86
    Sale price  $69.86 Regular price 
  • 1986-2003 Sportster Motor Mount Plates

    1986-2003 Sportster Motor Mount Plates

    1986-2003 Sportster Motor Mount Plates

    $90.05
    Sale price  $90.05 Regular price 
  • Harley-Davidson M8 Knucklehead Rocker Covers

    Harley-Davidson M8 Knucklehead Rocker Covers

    Harley-Davidson M8 Knucklehead Rocker Covers

    $1,599.00
    Sale price  $1,599.00 Regular price 
  • Kruesi Originals Magnetic Dipstick for 1999-2005 Dyna Models

    Kruesi Originals Magnetic Dipstick for 1999-2005 Dyna Models

    Kruesi Originals Magnetic Dipstick for 1999-2005 Dyna Models

    $159.95
    Sale price  $159.95 Regular price 
  • UltraCool Side Mount Oil Cooler Kit for 2018-2026 Harley-Davidson M8 Softail

    UltraCool Side Mount Oil Cooler Kit for 2018-2026 Harley-Davidson M8 Softail

    UltraCool Side Mount Oil Cooler Kit for 2018-2026 Harley-Davidson M8 Softail

    $589.99
    Sale price  $589.99 Regular price 
  • Drag Specialties Crankcase Breather Kit for 1991-2022 Sportster XL

    Drag Specialties Crankcase Breather Kit for 1991-2022 Sportster XL

    Drag Specialties Crankcase Breather Kit for 1991-2022 Sportster XL

    $65.22
    Sale price  $65.22 Regular price 
  • CV Performance Stainless Steel Bowl Hardware Kit

    CV Performance Stainless Steel Bowl Hardware Kit

    CV Performance Stainless Steel Bowl Hardware Kit

    $7.85
    Sale price  $7.85 Regular price 
  • Arlen Ness Titanium 12-Point Lifter Block Bolt Kit

    Arlen Ness Titanium 12-Point Lifter Block Bolt Kit

    Arlen Ness Titanium 12-Point Lifter Block Bolt Kit

    $79.95
    Sale price  $79.95 Regular price 
  • Arlen Ness Titanium 12-Point Cam Cover Bolt Kits

    Arlen Ness Titanium 12-Point Cam Cover Bolt Kits

    Arlen Ness Titanium 12-Point Cam Cover Bolt Kits

    $99.95
    Sale price  $99.95 Regular price 
  • Trask Tornado Stage 2 Turbo Kit for 117"+ M8 Models

    Trask Tornado Stage 2 Turbo Kit for 117"+ M8 Models

    Trask Tornado Stage 2 Turbo Kit for 117"+ M8 Models

    $6,999.95
    Sale price  $6,999.95 Regular price 
  • Replacement Tappet Block Covers for 1999-2017 Twin Cam Models

    Replacement Tappet Block Covers for 1999-2017 Twin Cam Models

    Replacement Tappet Block Covers for 1999-2017 Twin Cam Models

    $95.35
    Sale price  $95.35 Regular price