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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JAMES GASKET Starter Primary Gasket - XLCH 31461-70
JAMES GASKET
$21.20Made in the U.S.A.DS174072- SKU:
- DS174072
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- CORK
- TYPE:
- STARTER HOUSING
- UNITS:
- 10 PACK
- MOUNTING POSITION:
- STARTER HOUSING TO PRIMARY MOUNT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
$21.20 -
JAMES GASKET Starter Housing Gasket - XL 31488-77
JAMES GASKET
$9.30Made in the U.S.A.DS174071- SKU:
- DS174071
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- MOUNTING POSITION:
- STARTER BODY TO HOUSING MOUNT
- PRODUCT NAME:
- GASKET
- TYPE:
- STARTER HOUSING
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
$9.30 -
JAMES GASKET Rocker Cover Gasket - XL 17536-70
JAMES GASKET
$15.40Made from a solid steel sheet coated on two sides with a high-temperature elastomer. Strategically placed elastomer beading helps ensure a positive seal while our clear silicone conformal coating fills in minor imperfections in the flanges and provides...DS174060- SKU:
- DS174060
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- DISPLACEMENT:
- 1000 CC
- PRODUCT NAME:
- GASKET
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 10 PACK
$15.40 -
JAMES GASKET Timing Cover Gasket - XL 25224-52-A
JAMES GASKET
$29.10Replacement gaskets for cam chestsDS174050- SKU:
- DS174050
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- THICKNESS METRIC:
- 0.79 MM
- TYPE:
- CAM COVER
- PRODUCT NAME:
- GASKET
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS IMPERIAL:
- 0,031'
- UNITS:
- 10 PACK
$29.10 -
JAMES GASKET Generator Gasket 30143-58
JAMES GASKET
$6.00Flexible paper gasket product line utilized the latest in gasket paper technology called MicroPore., These gaskets exhibit exceptional fluid resistance and sealability in a wide range of applications and flange conditions., With a reduced pore size, this...DS174040- SKU:
- DS174040
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MATERIAL:
- PAPER
- MOUNTING POSITION:
- GENERATOR TO CASE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- GENERATOR MOUNT
$6.00 -
JAMES GASKET Clutch Cover Gasket - XL 37762-52
JAMES GASKET
$26.10Clutch cover gasket for Harley Davidson modelsDS174020- SKU:
- DS174020
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- CLUTCH COVER
$26.10 -
JAMES GASKET Primary Cover Gasket 34955-75
JAMES GASKET
$64.10Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174015- SKU:
- DS174015
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$64.10 -
JAMES GASKET Primary Cover Gasket 34955-89
JAMES GASKET
$66.90Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174014- SKU:
- DS174014
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- PRIMARY
- THICKNESS IMPERIAL:
- 0,030'
- MATERIAL:
- PAPER
$66.90 -
JAMES GASKET Primary Cover Gasket 34955-67
JAMES GASKET
$49.50Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174010- SKU:
- DS174010
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- COVER
- STYLE:
- PRIMARY
- THICKNESS METRIC:
- 0.51 MM
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- UNITS:
- 10 PACK
$49.50 -
DRAG SPECIALTIES Replacement Hook Kit 173978-BX-LB2
DRAG SPECIALTIES
$23.64Hooks to replace broken or lost parts from your display boardDS173978- SKU:
- DS173978
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- HOOK KIT
- RIDING STYLE:
- STREET
$23.64 -
JAMES GASKET Head Gasket - 4" - EVO 16773-96-X
JAMES GASKET
$66.95Made in the U.S.A.DS173542- SKU:
- DS173542
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- BORE SIZE:
- 4,000'
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 1.14 MM
- THICKNESS:
- 1,14 MM (0,045')
- TYPE:
- CYLINDER HEAD
- UNITS:
- PAIR
$66.95 -
JAMES GASKET Metal Base Gasket - 4" - Evo 16777-96-X
JAMES GASKET
$44.95Require no gasket sealer, Made in the U.S.A.DS173541- SKU:
- DS173541
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- MATERIAL:
- METAL
- PRODUCT NAME:
- GASKET
- BORE SIZE IMPERIAL:
- 4.000'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- FEATURES:
- BEADED
- MATERIAL:
- RUBBER
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
$44.95 -
JAMES GASKET Head Gasket - .036" - Twin Cam 16787-99-X
JAMES GASKET
$34.95Genuine James kits include matching head and base gaskets and O-rings where applicable, Made in the U.S.A.DS173540- SKU:
- DS173540
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- MATERIAL:
- -
- THICKNESS IMPERIAL:
- 0,036'
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.91 MM
- BORE SIZE IMPERIAL:
- 3.875'
- STYLE:
- STANDARD BORE
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
$34.95 -
JAMES GASKET Head Gasket - .045" - 95" - Twin Cam 16787-99
JAMES GASKET
$34.95Genuine James kits include matching head and base gaskets and O-rings where applicable, Made in the U.S.A.DS173539- SKU:
- DS173539
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- TYPE:
- CYLINDER BASE
- TYPE:
- CYLINDER HEAD
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,045'
- THICKNESS METRIC:
- 1.14 MM
- BORE SIZE IMPERIAL:
- 3.875'
- MATERIAL:
- -
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD BORE
$34.95 -
JAMES GASKET Carb Seal Ring - 44 mm 29639-99
JAMES GASKET
$52.95Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS173538- SKU:
- DS173538
- Availability:
- Ships Same Business Day
- Weight:
- 0.12 LBS
- APPLICATION:
- CARBURETOR
- APPLICATION:
- INTAKE MANIFOLD
- THICKNESS:
- 44 MM
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 44 MM
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
$52.95 -
JAMES GASKET Intake Manifold Seal Kit - 44 mm 27002-00
JAMES GASKET
$17.95Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS173537- SKU:
- DS173537
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- THICKNESS:
- 44 MM
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 44 MM
- STYLE:
- FOR SCREAMING EAGLE CARBS
- APPLICATION:
- INTAKE MANIFOLD TO CARBURETOR
- PRODUCT NAME:
- SEAL
$17.95 -
JAMES GASKET Main Seal Blue - Big Twin 12035-B
JAMES GASKET
$11.40Top quality main drive gear shaft sealsDS173536- SKU:
- DS173536
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
$11.40 -
JAMES GASKET Metal Teflon Inspection Gasket - Big Twin 34906-85-X
JAMES GASKET
$33.60Latest 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,...DS173535- SKU:
- DS173535
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- INSPECTION COVER
- FEATURES:
- BEADED
- MATERIAL:
- SILICONE
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- STYLE:
- PRIMARY
- THICKNESS:
- 1,14 MM (0,045')
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- MATERIAL:
- TEFLON
- THICKNESS IMPERIAL:
- 0,045'
$33.60 -
JAMES GASKET Top End Gasket Kit - 95" Twin Cam 17052-99-X
JAMES GASKET
$125.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS173532- SKU:
- DS173532
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.875'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET KIT
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- KIT
$125.95 -
JAMES GASKET Oil Pump Shaft Snap Ring - Big Twin 11002
JAMES GASKET
$6.30Replacement oil pump shaft snap ring for Shovelhead Cam ChestDS173529- SKU:
- DS173529
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RETAINING RING
$6.30
