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
-
JAMES GASKET Gasket/Seal Kit - XL 54-XL
JAMES GASKET
$16.95A compromised oil pump seal leads to leakage, pressure loss, and catastrophic engine failure—exactly what you're trying to avoid. The JAMES GASKET XL 54-XL kit supplies OEM-quality gaskets and seals...DS173407- SKU:
- DS173407
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Gasket/Seal Kit - XL 77-XL
JAMES GASKET
$16.95A compromised oil pump gasket or seal can lead to costly leaks, reduced system pressure, and potential engine damage. The JAMES GASKET XL 77-XL kit gives you all the components needed to completely...DS173406- SKU:
- DS173406
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP REPAIR
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Top End Gasket Kit - Panhead 17034-48
JAMES GASKET
$44.95A complete top-end gasket kit is essential for any Panhead engine rebuild—skimping on gasket quality leads to oil leaks, compression loss, and premature engine failure. JAMES GASKET delivers...DS173405- SKU:
- DS173405
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$44.95 -
JAMES GASKET Oil Pump Ball Bearing 8866
JAMES GASKET
$6.00A failing oil pump check valve ball can compromise your engine's oil pressure stability and lead to costly internal damage. This OEM-equivalent replacement from JAMES GASKET restores proper check...DS173404- SKU:
- DS173404
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CHECK VALVE
- PRODUCT NAME:
- BALL
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$6.00 -
EASTERN MOTORCYCLE PARTS Oil Pump Retainer Clip - Big Twin A-11002
EASTERN MOTORCYCLE PARTS
$5.40The oil pump retainer clip is a critical fastening component that secures your Big Twin oil pump in place, preventing unwanted movement and potential catastrophic damage to your lubrication system. A...DS173403- SKU:
- DS173403
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- RETAINER RING
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$5.40 -
JAMES GASKET Tail Lamp Lens Gasket 68122-55
JAMES GASKET
$24.30A failing tail lamp lens gasket compromises both safety and aesthetics—water intrusion leads to corrosion, electrical shorts, and failed inspections. The JAMES GASKET 68122-55 is engineered to seal...DS173395- SKU:
- DS173395
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- TYPE:
- TAIL LAMP LENS
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
$24.30 -
JAMES GASKET Primary Cover Gasket 60540-65
JAMES GASKET
$69.40A properly sealed primary cover is non-negotiable for keeping oil where it belongs and maintaining consistent engine performance. The JAMES GASKET Primary Cover Gasket features silicone beading that...DS173394- SKU:
- DS173394
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- THICKNESS IMPERIAL:
- 0,032'
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 0.81 MM
- UNITS:
- 10 PACK
- TYPE:
- PRIMARY COVER
$69.40 -
JAMES GASKET Generator Mounting Gasket - FL/XL 30143-30
JAMES GASKET
$6.00A reliable generator mounting gasket is critical to preventing oil seepage and maintaining proper engine sealing under sustained operating conditions. The JAMES GASKET Generator Mounting Gasket...DS173386- SKU:
- DS173386
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- MOUNTING POSITION:
- GENERATOR TO CASE
- RIDING STYLE:
- STREET
- TYPE:
- GENERATOR MOUNT
$6.00 -
JAMES GASKET Upper Pushrod Seal 17955-36-A
JAMES GASKET
$65.80Upper pushrod seals are critical to maintaining crankcase pressure and preventing oil bypass in high-revving engines. A compromised seal leads to oil leakage, reduced lubrication efficiency, and...DS173383- SKU:
- DS173383
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- APPLICATION:
- PUSHROD COVER
- PRODUCT NAME:
- SEAL
$65.80Qty in Cart: 0Quantity:Price:$65.80Subtotal: -
JAMES GASKET Front Tappet Block Gasket - Big Twin 18634-48-C
JAMES GASKET
$8.60A proper seal between your tappet block and engine case is critical to maintaining oil pressure and preventing leaks during high-performance operation. This James complete gasket kit eliminates the...DS173377- SKU:
- DS173377
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MOUNTING POSITION:
- FRONT
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- PAPER
- THICKNESS:
- 0,51 MM (0,020')
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- UNITS:
- 10 PACK
$8.60 -
JAMES GASKET Rear Tappet Block Gasket - Big Twin 18633-48-D
JAMES GASKET
$8.60A cam change or tappet block rebuild demands precision—and mismatched or worn gaskets compromise the entire job. The JAMES GASKET Rear Tappet Block Gasket eliminates guesswork by delivering...DS173376- SKU:
- DS173376
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- THICKNESS:
- 0,51 MM (0,020')
- MOUNTING POSITION:
- REAR
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- TYPE:
- TAPPET BLOCK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$8.60 -
JAMES GASKET Paper Gasket/Seal Kit 92-FLH
JAMES GASKET
$16.95Oil pump failures don't just sideline your engine—they compromise lubrication across your entire drivetrain, risking catastrophic damage. The JAMES GASKET Paper Gasket/Seal Kit 92-FLH gives you...DS173375- SKU:
- DS173375
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Mylar Gasket/Seal Kit 81-FL
JAMES GASKET
$16.95A properly functioning oil pump is critical to engine reliability and longevity—inadequate oil circulation leads to catastrophic bearing wear and engine failure. The JAMES GASKET Mylar Gasket/Seal...DS173374- SKU:
- DS173374
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- RIDING STYLE:
- STREET
$16.95 -
JAMES GASKET Paper Gasket/Seal Kit 79-FLH
JAMES GASKET
$16.95A failing oil pump gasket and seal kit compromises engine lubrication and invites costly leaks that can damage your entire drivetrain. The JAMES GASKET Paper Gasket/Seal Kit gives you OEM-quality...DS173373- SKU:
- DS173373
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- OIL PUMP
- UNITS:
- KIT
$16.95 -
JAMES GASKET Trans Gasket/Seal Kit - FL 33031-93
JAMES GASKET
$52.95Transmission fluid leaks compromise performance and reliability, leading to costly damage and downtime. The JAMES GASKET Trans Gasket/Seal Kit provides OEM-quality sealing for Harley-Davidson FL...DS173372- SKU:
- DS173372
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- STYLE:
- 5-SPEED
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
$52.95 -
JAMES GASKET Trans Gasket SEL Kit - Dyna 33031-91
JAMES GASKET
$51.95Transmission gasket failures are among the most common causes of fluid leaks on Dyna models, leading to contamination and costly repairs if left unchecked. The JAMES GASKET Trans Gasket SEL Kit...DS173371- SKU:
- DS173371
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- TRANSMISSION
- PRODUCT NAME:
- GASKET KIT
- STYLE:
- 5-SPEED
- UNITS:
- KIT
$51.95 -
JAMES GASKET Trans Gasket Set - W/WL 33030-41
JAMES GASKET
$35.95A transmission gasket set is critical to preventing fluid leaks that compromise shift quality and lead to costly internal damage. The JAMES GASKET Trans Gasket Set is engineered to maintain a perfect...DS173370- SKU:
- DS173370
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- TRANSMISSION
- UNITS:
- KIT
$35.95 -
JAMES GASKET Top End Gasket Kit - Flathead 17031-40
JAMES GASKET
$60.95A complete top-end gasket failure can leave your flathead sidelined for weeks while you source replacement parts individually. The JAMES GASKET Top End Gasket Kit consolidates every seal, gasket, and...DS173367- SKU:
- DS173367
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$60.95 -
JAMES GASKET Motor Gasket Set - K Model 17026-52
JAMES GASKET
$72.95A complete engine rebuild demands precision-engineered gaskets and seals that won't fail under pressure—JAMES Gasket delivers exactly that. This comprehensive motor gasket set includes all the...DS173357- SKU:
- DS173357
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- COMPLETE
$72.95Qty in Cart: 0Quantity:Price:$72.95Subtotal: -
JAMES GASKET Motor Gasket Set - 45" - Flathead 17026-40
JAMES GASKET
$83.95A complete engine rebuild demands precision-fitted gaskets and seals that won't compromise your work. The JAMES GASKET Motor Gasket Set supplies all the critical sealing components needed for a full...DS173356- SKU:
- DS173356
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- TYPE:
- COMPLETE
- TYPE:
- MOTOR
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
$83.95
