Harley Engine
Harley Bike Engine Parts at JJ Motorsports
Rebuild and boost your Harley's engine with premium parts from JJ Motorsports. Our inventory features complete gasket sets, piston kits, oil filters, pushrod tubes, and coolers designed for maximum strength, leak-free sealing, and high-performance in extreme conditions. Compatible with Big Twins, Softail, Touring, and more, these components support top-end overhauls, oil management, and durability for street rides or custom builds.
Shop trusted brands like Drag Specialties for magnetic filters and Wiseco for forged pistons. Explore related categories such as Harley air and fuel for carb tuning or Harley drivetrain for transmission upgrades.
Top Harley Engine Products
- DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18 – Captures metal particles with pressure relief.
- WISECO Piston Kit .010 .883 XL K1656 – Forged aluminum with rings, pins, and circlips for rebuilds.
- DRAG SPECIALTIES Pushrod Tube Kit Big Twin 75711 – Includes tubes, clips, cups, and springs for complete engine.
- ULTRACOOL Below Regulator Mount Oil Cooler Stainless Steel RF-2CSS – Fits S&S 111/124/143 engines with machined adapter.
- PAUGHCO Ribbed Teardrop Air Cleaner 701-200 – Chrome-plated aluminum with mini filter.
Browse our in-stock inventory below with same-day shipping and expert support. Questions? Contact us for fitment advice!
- Product
- Qty in Cart
- Quantity
- Price
- Subtotal
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On Sale
JOKER MACHINE Timing Cover - M8 - Black 02-972-2
JOKER MACHINE
MSRP: $71.95Now: $61.16Was: $71.95JOKER MACHINE Timing Cover - M8 - Black09402022- SKU:
- 09402022
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- STYLE:
- MILLED
- TYPE:
- TIMING
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
MSRP: $71.95Now: $61.16Was: $71.95 -
On Sale
JOKER MACHINE Timing Cover - M8 - Chrome 02-971-3
JOKER MACHINE
MSRP: $71.95Now: $61.16Was: $71.95JOKER MACHINE Timing Cover - M8 - Chrome09402021- SKU:
- 09402021
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- MATERIAL:
- BILLET ALUMINUM
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- TYPE:
- TIMING
- STYLE:
- SMOOTH
MSRP: $71.95Now: $61.16Was: $71.95 -
On Sale
JOKER MACHINE Timing Cover - M8 - Black 02-971-1
JOKER MACHINE
MSRP: $65.95Now: $56.06Was: $65.95JOKER MACHINE Timing Cover - M8 - Black09402020- SKU:
- 09402020
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- TIMING
- COLOR/FINISH:
- BLACK ANODIZED
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
- STYLE:
- SMOOTH
MSRP: $65.95Now: $56.06Was: $65.95 -
DRAG SPECIALTIES Points Cover - Black 78042B
DRAG SPECIALTIES
$31.88Die-cast construction, Matches other Drag Specialties Split Skull products09401617- SKU:
- 09401617
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- COLOR/FINISH:
- BLACK
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- COVER
- STYLE:
- CHROME SKULL
- TYPE:
- POINTS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$31.88 -
DRAG SPECIALTIES Points Cover - Chrome 78042
DRAG SPECIALTIES
$25.70Die-cast construction, Matches other Drag Specialties Split Skull products09401616- SKU:
- 09401616
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- STYLE:
- BLACK SKULL
- TYPE:
- POINTS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- DIE-CAST
$25.70 -
DRAG SPECIALTIES Points Cover - Black 78041B
DRAG SPECIALTIES
$28.79Die-cast construction, Matches other Drag Specialties Split Skull products09401615- SKU:
- 09401615
- Availability:
- Ships Same Business Day
- Weight:
- 0.35 LBS
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- DIE-CAST
- PRODUCT NAME:
- COVER
- STYLE:
- CHROME SKULL
- TYPE:
- POINTS
$28.79 -
DRAG SPECIALTIES Points Cover - Chrome 78041
DRAG SPECIALTIES
$27.76Die-cast construction, Matches other Drag Specialties Split Skull products09401614- SKU:
- 09401614
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- STYLE:
- BLACK SKULL
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- MATERIAL:
- DIE-CAST
$27.76 -
DRAG SPECIALTIES Points Cover - Black 78040B
DRAG SPECIALTIES
$28.79Die-cast construction, Matches other Drag Specialties Split Skull products09401613- SKU:
- 09401613
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- MATERIAL:
- DIE-CAST
- STYLE:
- CHROME SKULL
$28.79 -
On Sale
JAMES GASKET Piston Liner O-Ring - 4 Pack ST-11900027
JAMES GASKET
MSRP: $20.95Now: $13.00Was: $20.95Made in the U.S.A.09351071- SKU:
- 09351071
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- RIDING STYLE:
- STREET
- APPLICATION:
- PISTON
- PRODUCT NAME:
- O-RING
- TYPE:
- PISTON LINER
- UNITS:
- KIT
MSRP: $20.95Now: $13.00Was: $20.95 -
JAMES GASKET Breather O-Ring - M8 JGI-11900116
JAMES GASKET
$13.10Made in the U.S.A.09350985- SKU:
- 09350985
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- O-RING
- MATERIAL:
- RUBBER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$13.10 -
JAMES GASKET Sprocket Shaft Seal JGI-11000134
JAMES GASKET
$15.40Made in the U.S.A.09350984- SKU:
- 09350984
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- SPROCKET SHAFT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$15.40 -
JAMES GASKET Engine Inner Primary Seal JGI-25600455
JAMES GASKET
$24.95Made in the U.S.A.09350983- SKU:
- 09350983
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- APPLICATION:
- INNER PRIMARY
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
$24.95 -
JAMES GASKET Engine to Trans Seal - M8 JGI-24400215
JAMES GASKET
$13.95Made in the U.S.A.09350982- SKU:
- 09350982
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- ENGINE
- UNITS:
- EACH
- RIDING STYLE:
- STREET
$13.95 -
JAMES GASKET Shifter Shaft Seal - M8 JGI-11000101
JAMES GASKET
$7.95Made in the U.S.A.09350981- SKU:
- 09350981
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- APPLICATION:
- SHIFTER SHAFT
- UNITS:
- EACH
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
$7.95 -
JAMES GASKET Intake Manifold Seal - M8 JGI-27300087
JAMES GASKET
$18.00Made in the U.S.A.09350980- SKU:
- 09350980
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- SEAL
- APPLICATION:
- INTAKE MANIFOLD
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$18.00 -
JAMES GASKET Valve Stem Seal - M8 JGI-18100044
JAMES GASKET
$7.80Made in the U.S.A.09350979- SKU:
- 09350979
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- RIDING STYLE:
- STREET
- TYPE:
- VALVE STEM
- PRODUCT NAME:
- SEAL
- UNITS:
- 8 PACK
$7.80 -
JAMES GASKET Cylinder Rocker Seal - M8 JGI-25700425
JAMES GASKET
$29.40Made in the U.S.A.09350978- SKU:
- 09350978
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- APPLICATION:
- ROCKER COVER
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$29.40 -
On Sale
COMETIC Module Kit O-Ring C10200
COMETIC
MSRP: $8.35Now: $8.00Was: $8.35Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle, Made in the U.S.A.09350977- SKU:
- 09350977
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- APPLICATION:
- INDUCTION MODULE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- O-RING
- UNITS:
- 4 PACK
MSRP: $8.35Now: $8.00Was: $8.35 -
On Sale
COMETIC Transmission Top Cover Gasket C9267F
COMETIC
Now: $17.00Was: $18.60Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer., Made in the U.S.A.09350220- SKU:
- 09350220
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- TRANSMISSION TOP COVER
Now: $17.00Was: $18.60 -
On Sale
COMETIC Oil Pan Gasket - AFM 10 C9490F
COMETIC
Now: $32.00Was: $33.70Aluminum Foamette Material gaskets feature an aluminum core and a chemically blown, compounded nitrile synthetic rubber coating that is bonded to the outside layer; do not require gasket sealer., Made in the U.S.A.09350217- SKU:
- 09350217
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0.032'
- TYPE:
- TRANSMISSION
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PAN
- UNITS:
- 10 PACK
Now: $32.00Was: $33.70
