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 Transmission Oil Spout - FLT 62432-93
JAMES GASKET
$34.70Made in the U.S.A.DS174520- SKU:
- DS174520
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- PRODUCT NAME:
- GASKET
- TYPE:
- OIL FILLER
$34.70 -
JAMES GASKET Left Fuel Cap Gasket 61116-65
JAMES GASKET
$16.50Made in the U.S.A.DS174518- SKU:
- DS174518
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- LEFT
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- TYPE:
- FUEL CAP
- STYLE:
- LEFT
$16.50 -
JAMES GASKET Thin Fuel Cap Gasket 61114-48
JAMES GASKET
$16.50Made in the U.S.A.DS174517- SKU:
- DS174517
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- TYPE:
- FUEL CAP
- PRODUCT NAME:
- GASKET
- STYLE:
- THIN
- UNITS:
- 10 PACK
$16.50 -
JAMES GASKET Gas Cap O-Ring 61109-85-C
JAMES GASKET
$28.50Made in the U.S.A.DS174515- SKU:
- DS174515
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- APPLICATION:
- FUEL CAP
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- O-RING
$28.50 -
JAMES GASKET Timing Gear Cover - Big Twin 25225-36-C
JAMES GASKET
$29.10Replacement gaskets for cam chestsDS174510- SKU:
- DS174510
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- TYPE:
- CAM COVER
$29.10 -
JAMES GASKET Head Gasket with Silicon - 3-5/8" - .045" 16773-85-TS
JAMES GASKET
$59.20Made in the U.S.A.DS174500- SKU:
- DS174500
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- BORE SIZE:
- 3,625'
- BORE SIZE IMPERIAL:
- 3.625'
- THICKNESS:
- 1,14 MM (0,045')
- TYPE:
- CYLINDER HEAD
- MATERIAL:
- SILICONE
- PRODUCT NAME:
- GASKET
- THICKNESS METRIC:
- 1.14 MM
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
$59.20 -
JAMES GASKET Keihin Manifold Gasket - Big Twin 27077-78
JAMES GASKET
$9.50Kits contain carb-to-intake seal and two intake-to-cylinder head sealsDS174492- SKU:
- DS174492
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- RIDING STYLE:
- STREET
- TYPE:
- CARBURETOR
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- UNITS:
- 10 PACK
$9.50 -
JAMES GASKET Shifter Shaft Seal 11148
JAMES GASKET
$19.81JAMES GASKET Shifter Shaft SealDS174489- SKU:
- DS174489
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- GEAR SHIFT LEVER
- TYPE:
- QUAD SEAL
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- X-RING
- UNITS:
- 25 PACK
$19.81 -
JAMES GASKET Starter Shaft Oil Seal - Big Twin 31341-80DL
JAMES GASKET
$14.50Made in the U.S.A.DS174486- SKU:
- DS174486
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- APPLICATION:
- STARTER SHAFT
- UNITS:
- 5 PACK
$14.50 -
On Sale
JAMES GASKET Upper Rocker Cork - XL 17354-86
JAMES GASKET
Now: $19.00Was: $29.40Made 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...DS174484- SKU:
- DS174484
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- PRODUCT NAME:
- GASKET
- MOUNTING POSITION:
- UPPER
- UNITS:
- 5 PACK
- MATERIAL:
- CORK
Now: $19.00Was: $29.40 -
JAMES GASKET Lower Rocker Cork - XL 17353-86
JAMES GASKET
$45.60Made 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...DS174483- SKU:
- DS174483
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- UNITS:
- 5 PACK
- PRODUCT NAME:
- GASKET
- MATERIAL:
- CORK
$45.60 -
JAMES GASKET Oil Pump Body Gasket - Big Twin 26245-41
JAMES GASKET
$14.00JAMES GASKET Oil Pump Body Gasket - Big TwinDS174480- SKU:
- DS174480
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- STYLE:
- BODY
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
- UNITS:
- 10 PACK
$14.00 -
JAMES GASKET Rear Base Gasket - FL/FX 16777-63
JAMES GASKET
$16.60Require no gasket sealer, Made in the U.S.A.DS174479- SKU:
- DS174479
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- THICKNESS METRIC:
- 0.81 MM
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,032'
- TYPE:
- CYLINDER BASE
$16.60 -
JAMES GASKET Kick Shaft Oil Seal - XL/Big Twin 33076-37
JAMES GASKET
$11.80Made in the U.S.A.DS174478- SKU:
- DS174478
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- CRANKSHAFT
- APPLICATION:
- KICKSTARTER
- RIDING STYLE:
- STREET
$11.80 -
JAMES GASKET Shifter Cam Shaft Seal 34036-36
JAMES GASKET
$11.10JAMES GASKET Shifter Cam Shaft SealDS174477- SKU:
- DS174477
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
- APPLICATION:
- SHIFTER SHAFT
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
$11.10Qty in Cart: 0Quantity:Price:$11.10Subtotal: -
JAMES GASKET Mainshaft Seal - Big Twin 12044-A
JAMES GASKET
$14.95Made in the U.S.A.DS174476- SKU:
- DS174476
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- TRANSMISSION
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
$14.95 -
JAMES GASKET Main Drive Gear Seal 12013-A
JAMES GASKET
$9.50Top quality main drive gear shaft sealsDS174475- SKU:
- DS174475
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- UNITS:
- 5 PACK
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- APPLICATION:
- MAIN DRIVE GEAR
- APPLICATION:
- MAINSHAFT
$9.50 -
JAMES GASKET Pushrod Cork - Big Twin 37337-36
JAMES GASKET
$24.40Made in the U.S.A.DS174474- SKU:
- DS174474
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- APPLICATION:
- CLUTCH PUSHROD
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
- UNITS:
- 10 PACK
$24.40 -
JAMES GASKET Rocker Arm Cover Gasket 17541-48-A
JAMES GASKET
$27.50Made 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...DS174470- SKU:
- DS174470
- Availability:
- Ships Same Business Day
- Weight:
- 0.38 LBS
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,062'
- THICKNESS METRIC:
- 1.60 MM
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS:
- 1,60 MM (0,062')
- TYPE:
- ROCKER COVER
- UNITS:
- 10 PACK
$27.50 -
JAMES GASKET Oil Seal for Supernut 35211-85-DL
JAMES GASKET
$24.70Replacement oil seal, For 4-Speed TransmissionDS174458- SKU:
- DS174458
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- STYLE:
- 4-SPEED
- PRODUCT NAME:
- SEAL
- TYPE:
- SUPER NUT
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$24.70
