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
-
On Sale
COMETIC S&S Rocker Box Gasket Kit C9155
COMETIC
MSRP: $74.50Now: $70.00Was: $74.50Premium materials used for specific applications to provide a long, service free life, Kits include all gaskets, seals, O-rings and quality bolt seals needed when servicing both rocker boxes, Made in the U.S.A.09341212- SKU:
- 09341212
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- FEATURES:
- FOR S&S DIE-CAST ROCKER BOXES
- PRODUCT NAME:
- GASKET KIT
- MATERIAL:
- STEEL
- TYPE:
- ROCKER BOX
- MODEL:
- EST
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $74.50Now: $70.00Was: $74.50 -
On Sale
COMETIC Head Gasket - 4.125" - S&S Super Sidewinder - .045" C9934
COMETIC
MSRP: $61.90Now: $58.00Was: $61.90Manufactured from premium fuel-resistant materials that will not creep, crack or become brittle. Made in the U.S.A.09340791- SKU:
- 09340791
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE IMPERIAL:
- 4.125'
- MATERIAL:
- VITON
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,045'
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,14 MM (0,045')
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- LAYERED STEEL
- BORE SIZE:
- 4,125'
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- PAIR
MSRP: $61.90Now: $58.00Was: $61.90 -
On Sale
COMETIC Manifold/Head Gasket - S&S C9223
COMETIC
Now: $14.00Was: $14.80Viton gaskets feature a stainless steel core with a .001"-thick coating of Viton rubber on both sides., Made in the U.S.A.09341661- SKU:
- 09341661
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- MATERIAL:
- VITON
- UNITS:
- 4 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- TYPE:
- INTAKE MANIFOLD
Now: $14.00Was: $14.80Qty in Cart: 0Quantity:Price:Now: $14.00Was: $14.80Subtotal: -
JAMES GASKET Top End Gasket Kit - S&S 17040-92-SS
JAMES GASKET
$121.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.20112097- SKU:
- 20112097
- Availability:
- Ships Same Business Day
- Weight:
- 0.65 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- KIT
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
$121.95 -
JAMES GASKET Cylinder Base Gasket - S&S T124 JGI-16736-13
JAMES GASKET
$35.95JAMES GASKET Cylinder Base Gasket - S&S T12409345979- SKU:
- 09345979
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- TYPE:
- CYLINDER BASE
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
$35.95 -
JAMES GASKET Rocker Cover Kit - S&S 17042-92-SS
JAMES GASKET
$52.95Made in the U.S.A.DS174501- SKU:
- DS174501
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$52.95 -
JAMES GASKET Seal Kit - S&S XL/Panhead 27002-66-SS
JAMES GASKET
$20.95Kits contain carb-to-intake seal and two intake-to-cylinder head seals09350088- SKU:
- 09350088
- Availability:
- Ships Same Business Day
- Weight:
- 0.18 LBS
- UNITS:
- KIT
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL KIT
$20.95 -
JAMES GASKET S&S Intake Seal - 1.88" 26995-86-D
JAMES GASKET
$27.30JAMES GASKET S&S Intake Seal - 1.88"09340548- SKU:
- 09340548
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- INTAKE MANIFOLD
- PRODUCT NAME:
- SEAL
$27.30 -
JAMES GASKET Top End Gasket Kit - S&S 17040-04-SS
JAMES GASKET
$144.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.09341590- SKU:
- 09341590
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$144.95 -
JAMES GASKET Carb Gasket - S&S Super E 29058-SSE
JAMES GASKET
$7.70Made in the U.S.A.09341612- SKU:
- 09341612
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- AIR CLEANER
- MOUNTING POSITION:
- AIR CLEANER TO CARBURETOR
- TYPE:
- CARBURETOR
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$7.70 -
JAMES GASKET Carb Gasket - S&S Super G 29058-SSG
JAMES GASKET
$7.70Made in the U.S.A.09341613- SKU:
- 09341613
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- TYPE:
- CARBURETOR
- MOUNTING POSITION:
- AIR CLEANER TO CARBURETOR
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- AIR CLEANER
$7.70 -
On Sale
S&S CYCLE Top End Gasket Kit 90-9500
S&S CYCLE
MSRP: $203.95Now: $183.56Was: $203.95Made in the U.S.A.909500- SKU:
- 909500
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
MSRP: $203.95Now: $183.56Was: $203.95 -
On Sale
S&S CYCLE Top End Gasket Kit - 3-5/8" 90-9501
S&S CYCLE
MSRP: $205.95Now: $185.36Was: $205.95Made in the U.S.A.909501- SKU:
- 909501
- Availability:
- Ships Same Business Day
- Weight:
- 0.55 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TOP END
- UNITS:
- KIT
MSRP: $205.95Now: $185.36Was: $205.95Qty in Cart: 0Quantity:Price:MSRP: $205.95Now: $185.36Was: $205.95Subtotal: -
On Sale
S&S CYCLE Top End Gasket - 3-5/8" - Big Twin 90-9502
S&S CYCLE
MSRP: $102.95Now: $92.66Was: $102.95Includes set of head and base gaskets, exhaust gaskets and O-rings, Layered steel head gaskets, Made in the U.S.A., Kit does not include rocker box gaskets; must be purchased separately.909502- SKU:
- 909502
- Availability:
- Ships Same Business Day
- Weight:
- 0.36 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- BORE SIZE:
- 3,625'
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
MSRP: $102.95Now: $92.66Was: $102.95 -
On Sale
S&S CYCLE Top End Gasket - 4" - Big Twin 90-9503
S&S CYCLE
MSRP: $94.95Now: $85.46Was: $94.95Made in the U.S.A.909503- SKU:
- 909503
- Availability:
- Ships Same Business Day
- Weight:
- 0.24 LBS
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- FEATURES:
- FOR '84 - '99 SUPER STOCK S&S EVOLUTION BIG TWIN
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
MSRP: $94.95Now: $85.46Was: $94.95 -
On Sale
S&S CYCLE Top End Gasket - 3-7/8" - Twin Cam 90-9504
S&S CYCLE
MSRP: $137.95Now: $124.16Was: $137.95Made in the U.S.A.909504- SKU:
- 909504
- Availability:
- Ships Same Business Day
- Weight:
- 0.22 LBS
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- TOP END
- FEATURES:
- FOR '99 - '06 SUPER STOCK S&S TWIN CAM
- PRODUCT NAME:
- GASKET KIT
MSRP: $137.95Now: $124.16Was: $137.95Qty in Cart: 0Quantity:Price:MSRP: $137.95Now: $124.16Was: $137.95Subtotal: -
On Sale
S&S CYCLE Top End Gasket - 4" - Twin Cam 90-9505
S&S CYCLE
MSRP: $106.95Now: $96.26Was: $106.95Made in the U.S.A.909505- SKU:
- 909505
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- FEATURES:
- FOR '99 - '06 SUPER STOCK S&S TWIN CAM
- TYPE:
- TOP END
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
MSRP: $106.95Now: $96.26Was: $106.95 -
On Sale
S&S CYCLE Top End Gasket Kit - 3.5" 90-9507
S&S CYCLE
MSRP: $117.95Now: $106.16Was: $117.95Made in the U.S.A.909507- SKU:
- 909507
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
MSRP: $117.95Now: $106.16Was: $117.95 -
On Sale
S&S CYCLE Replacement Rings 94-1210X
S&S CYCLE
MSRP: $67.95Now: $61.16Was: $67.95Replacement ring set for S&S Pistons941210- SKU:
- 941210
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- TYPE:
- REPLACEMENT
- UNITS:
- SET
- PISTON SIZE IMPERIAL:
- STANDARD
MSRP: $67.95Now: $61.16Was: $67.95 -
On Sale
S&S CYCLE Replacement Rings 94-1211X
S&S CYCLE
MSRP: $64.95Now: $58.46Was: $64.95Replacement ring set for S&S Pistons941211- SKU:
- 941211
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- PISTON SIZE IMPERIAL:
- +0.010'
- RIDING STYLE:
- STREET
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- PISTON RING
- UNITS:
- SET
- TYPE:
- REPLACEMENT
MSRP: $64.95Now: $58.46Was: $64.95
