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
JAMES GASKET Trans Fill Plug Gasket - Big Twin 37091-80
JAMES GASKET
Now: $7.00Was: $11.20Quality washers made to last, Made in the U.S.A.DS174825- SKU:
- DS174825
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- DISPLACEMENT:
- 1340 CC
- TYPE:
- PLUG
Now: $7.00Was: $11.20 -
JAMES GASKET Intake Manifold Seal 27062-78
JAMES GASKET
$32.80Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS174822- SKU:
- DS174822
- Availability:
- Ships Same Business Day
- Weight:
- 0.45 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- APPLICATION:
- INTAKE MANIFOLD
- PRODUCT NAME:
- SEAL
$32.80 -
JAMES GASKET Oil Pump O-Ring - XL 26434-91
JAMES GASKET
$11.10JAMES GASKET Oil Pump O-Ring - XLDS174821- SKU:
- DS174821
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- OIL PUMP
- UNITS:
- 10 PACK
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$11.10 -
On Sale
JAMES GASKET Oil Pump Cover O-Ring 26434-76-A
JAMES GASKET
Now: $7.00Was: $10.20JAMES GASKET Oil Pump Cover O-RingDS174820- SKU:
- DS174820
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- O-RING
- APPLICATION:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OIL
Now: $7.00Was: $10.20 -
JAMES GASKET Drain Plug Washer - FLT/FXR 6007
JAMES GASKET
$12.30Drain plug o-ring for Harley Davidson modelsDS174817- SKU:
- DS174817
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- MATERIAL:
- NYLON
$12.30 -
JAMES GASKET Drain Plug Washer 62702-52
JAMES GASKET
$13.40Drain plug o-ring for Harley Davidson modelsDS174815- SKU:
- DS174815
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- MATERIAL:
- COPPER
- UNITS:
- 10 PACK
- APPLICATION:
- DRAIN PLUG
$13.40 -
JAMES GASKET Head Gasket - Copper - .16" - XL 16769-73
JAMES GASKET
$33.00Made in the U.S.A.DS174800- SKU:
- DS174800
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- DISPLACEMENT:
- 1000 CC
- PRODUCT NAME:
- GASKET
- THICKNESS:
- 0,41 MM (0,016')
- UNITS:
- 5 PACK
- THICKNESS IMPERIAL:
- 0.016'
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- COPPER
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.41 MM
$33.00 -
JAMES GASKET Derby Cover - .030" - Big Twin 25416-70
JAMES GASKET
$19.70Latest additions to our line of high-quality genuine James gaskets, seals and O-rings, Cover seals are a seal, not a gasket, Cover seals are molded rubber, beaded oil seals with metal inserts and work with all inspection and derby covers; fit billet,...DS174790- SKU:
- DS174790
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS:
- 0,80 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- DERBY COVER
- UNITS:
- EACH
$19.70 -
JAMES GASKET Clutch Cover Gasket - Big Twin 60565-36
JAMES GASKET
$38.10Clutch cover gasket for Harley Davidson modelsDS174780- SKU:
- DS174780
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- TYPE:
- CLUTCH COVER
- TYPE:
- DERBY COVER
- MATERIAL:
- CORK
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
$38.10 -
JAMES GASKET 4 Speed Trans End Gasket - Big Twin 33295-36-X
JAMES GASKET
$17.60Made in the U.S.A.DS174755- SKU:
- DS174755
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- TYPE:
- SIDE COVER
- FEATURES:
- BEADED
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$17.60 -
JAMES GASKET Exhaust Stud/Nut Kit EV-1
JAMES GASKET
$20.95Kits include gaskets and heavy-duty flange hex nuts or chrome acorn nuts with washers, Made in the U.S.A. by James GasketsDS174749- SKU:
- DS174749
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- FEATURES:
- GRAPHITE/KNITTED WIRE GASKETS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- MATERIAL:
- GRAPHITE
- TYPE:
- EXHAUST PORT
- UNITS:
- KIT
- MATERIAL:
- METAL
$20.95 -
JAMES GASKET Fire-Ring Exhaust Gasket - Big Twin 65834-68-X
JAMES GASKET
$19.00Made in the U.S.A. by James GasketsDS174746- SKU:
- DS174746
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$19.00 -
JAMES GASKET Copper Exhaust Gasket - BT 65834-68-A
JAMES GASKET
$19.00Made in the U.S.A. by James GasketsDS174745- SKU:
- DS174745
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$19.00 -
JAMES GASKET Exhaust Port Gasket 65324-83
JAMES GASKET
$29.30Made in the U.S.A. by James GasketsDS174742- SKU:
- DS174742
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
$29.30 -
JAMES GASKET Exhaust Gasket - FXR/XL 65781-82
JAMES GASKET
$12.95Made in the U.S.A. by James GasketsDS174741- SKU:
- DS174741
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- STYLE:
- CROSSOVER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- TYPE:
- EXHAUST
- PRODUCT NAME:
- GASKET
$12.95 -
DRAG SPECIALTIES Exhaust Gasket - Copper - Big Twin 74052
DRAG SPECIALTIES
$9.22High-quality exhaust gasketsDS174739- SKU:
- DS174739
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
- UNITS:
- PAIR
$9.22 -
JAMES GASKET Graphite Exhaust Gasket - BT/XL 65324-83-A
JAMES GASKET
$24.10Made in the U.S.A. by James GasketsDS174735- SKU:
- DS174735
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- EXHAUST PORT
$24.10 -
JAMES GASKET Oil Pump Cover Gasket - Big Twin 26257-41
JAMES GASKET
$13.90JAMES GASKET Oil Pump Cover Gasket - Big TwinDS174732- SKU:
- DS174732
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- STYLE:
- COVER
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$13.90 -
JAMES GASKET Oil Pump Cover - Big Twin 26255-41
JAMES GASKET
$13.90JAMES GASKET Oil Pump Cover - Big TwinDS174731- SKU:
- DS174731
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- STYLE:
- COVER
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$13.90 -
JAMES GASKET Oil Pump Body Gasket 26246-68-D
JAMES GASKET
$14.70JAMES GASKET Oil Pump Body GasketDS174730- SKU:
- DS174730
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- STYLE:
- BODY
- RIDING STYLE:
- STREET
$14.70
