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 Derby Nylon Washer 31433-84
JAMES GASKET
$7.30Made in the U.S.A.DS173471- SKU:
- DS173471
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- UNITS:
- 20 PACK
- APPLICATION:
- DERBY COVER
- MATERIAL:
- NYLON
$7.30 -
JAMES GASKET Inspection Screw Gasket - FXST/FXD 63859-95
JAMES GASKET
$23.70Quality washers made to last, Made in the U.S.A.DS173469- SKU:
- DS173469
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- PRODUCT NAME:
- WASHER
- RIDING STYLE:
- STREET
- TYPE:
- CHAIN COVER
- UNITS:
- 32 PACK
$23.70 -
JAMES GASKET Large Pushrod Cork - Big Twin 17955-48
JAMES GASKET
$72.10Made in the U.S.A.DS173468- SKU:
- DS173468
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 100 PACK
- PRODUCT NAME:
- SEAL
- APPLICATION:
- PUSHROD COVER
$72.10 -
JAMES GASKET Exhaust Port Gasket Steel Core 65834-68-SC
JAMES GASKET
$31.80Made in the U.S.A. by James GasketsDS173461- SKU:
- DS173461
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- FEATURES:
- FIRE RING
- TYPE:
- EXHAUST
- UNITS:
- 10 PACK
$31.80 -
JAMES GASKET F/I Sending Unit Gasket 61326-95
JAMES GASKET
$31.80Made in the U.S.A.DS173458- SKU:
- DS173458
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MATERIAL:
- CORK
- TYPE:
- FUEUL TANK CANOPY
$31.80 -
JAMES GASKET Float Bowl Gasket - Big Twin 27391-36
JAMES GASKET
$16.10Made in the U.S.A.DS173456- SKU:
- DS173456
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- TYPE:
- FLOAT BOWL
- UNITS:
- 10 PACK
$16.10 -
JAMES GASKET Tappet Block Gasket 18632-36
JAMES GASKET
$9.80Convenient and efficient way to sell the correct amount of seals or O-rings for a rebuild or cam change, James complete kits are neatly packaged for easy display, Made in the U.S.A.DS173454- SKU:
- DS173454
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- MOUNTING POSITION:
- FRONT
- THICKNESS IMPERIAL:
- 0,031'
- MOUNTING POSITION:
- REAR
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,79 MM (0,031')
- THICKNESS METRIC:
- 0.79 MM
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- TYPE:
- TAPPET BLOCK
$9.80 -
JAMES GASKET Intake Manifold Gasket with Seal - Big Twin 27077-78-X
JAMES GASKET
$34.20Made in the U.S.A.DS173446- SKU:
- DS173446
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- MATERIAL:
- SILICONE
- MOUNTING POSITION:
- INTAKE MANIFOLD TO CARBURETOR
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- TYPE:
- INTAKE MANIFOLD
- FEATURES:
- BEADED
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$34.20 -
JAMES GASKET Air/Back Plate Gasket 29095-95
JAMES GASKET
$13.90Made in the U.S.A.DS173445- SKU:
- DS173445
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- AIR CLEANER
- TYPE:
- BACKPLATE
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
$13.90 -
JAMES GASKET Air/Backing Plate Gasket 29313-95
JAMES GASKET
$16.60Made in the U.S.A.DS173444- SKU:
- DS173444
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- FEATURES:
- INCLUDES ADHESIVE
- PRODUCT NAME:
- GASKET
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- STYLE:
- AIR CLEANER
- TYPE:
- BACKPLATE
- UNITS:
- 10 PACK
$16.60 -
JAMES GASKET Air Cleaner to Cab Gasket 29059-88-A
JAMES GASKET
$10.30Made in the U.S.A.DS173442- SKU:
- DS173442
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- FEATURES:
- INCLUDES ADHESIVE
- MOUNTING POSITION:
- AIR CLEANER TO CARBURETOR
- PRODUCT NAME:
- GASKET
- UNITS:
- 10 PACK
- MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,80 MM (0,030')
- THICKNESS IMPERIAL:
- 0,030'
- THICKNESS METRIC:
- 0.80 MM
- TYPE:
- CARBURETOR
- STYLE:
- AIR CLEANER
$10.30 -
JAMES GASKET Air Cleaner to Cab Gasket 29059-88-X
JAMES GASKET
$7.70Made in the U.S.A.DS173441- SKU:
- DS173441
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
- MATERIAL:
- STEEL
- MOUNTING POSITION:
- AIR CLEANER TO CARBURETOR
- STYLE:
- AIR CLEANER
- TYPE:
- CARBURETOR
$7.70 -
JAMES GASKET Head Gasket with O-Ring .030" 16770-84-X
JAMES GASKET
$34.95Made in the U.S.A.DS173439- SKU:
- DS173439
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MATERIAL:
- CARBON
- PRODUCT NAME:
- GASKET
- MATERIAL:
- GRAPHITE
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,036'
- BORE SIZE:
- -
- BORE SIZE IMPERIAL:
- -
- THICKNESS METRIC:
- 0.91 MM
- UNITS:
- SET
- TYPE:
- CYLINDER HEAD
$34.95 -
JAMES GASKET Head Gasket with O-Ring - .045" 16770-84-B
JAMES GASKET
$39.30Made in the U.S.A.DS173438- SKU:
- DS173438
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BORE SIZE:
- -
- BORE SIZE IMPERIAL:
- -
- RIDING STYLE:
- STREET
- TYPE:
- CYLINDER HEAD
- UNITS:
- 5 PACK
- MATERIAL:
- GRAPHITE
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0,045'
- THICKNESS METRIC:
- 1.14 MM
- MATERIAL:
- CARBON
$39.30 -
JAMES GASKET Cylinder Base Gasket - 3-5/8" 16777-86-S
JAMES GASKET
$14.10Require no gasket sealer, Made in the U.S.A.DS173437- SKU:
- DS173437
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- MATERIAL:
- PAPER
- UNITS:
- 5 PACK
$14.10 -
JAMES GASKET Cylinder Base Gasket - Big Twin 16777-83-A
JAMES GASKET
$14.00Require no gasket sealer, Made in the U.S.A.DS173436- SKU:
- DS173436
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- TYPE:
- CYLINDER BASE
- DISPLACEMENT:
- 1340 CC
- THICKNESS METRIC:
- 0.51 MM
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
$14.00 -
JAMES GASKET Rocker Box Cork - Panhead 17541-48-C
JAMES GASKET
$39.60Made 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...DS173435- SKU:
- DS173435
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- RIDING STYLE:
- STREET
- THICKNESS:
- 3,20 MM (0,125')
- THICKNESS METRIC:
- 3.20 MM
- THICKNESS IMPERIAL:
- 0,125'
- MATERIAL:
- CORK
- TYPE:
- ROCKER COVER
- PRODUCT NAME:
- GASKET
- UNITS:
- 5 PACK
$39.60 -
JAMES GASKET Drain Plug/Oil Pump Cap O-Ring 11105-X
JAMES GASKET
$7.80Drain plug o-ring for Harley Davidson modelsDS173430- SKU:
- DS173430
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- APPLICATION:
- OIL PUMP
- SIZE:
- OVERSIZE
- APPLICATION:
- DRAIN PLUG
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- UNITS:
- 25 PACK
$7.80 -
JAMES GASKET Trans Double Lip Seal 37741-67-A
JAMES GASKET
$17.95Top quality main drive gear shaft sealsDS173426- SKU:
- DS173426
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- PRODUCT NAME:
- SEAL
- UNITS:
- EACH
- APPLICATION:
- MAIN DRIVE GEAR
- RIDING STYLE:
- STREET
$17.95 -
JAMES GASKET Inner Primary Bearing Seal 12052-F
JAMES GASKET
$19.10Made in the U.S.A.DS173424- SKU:
- DS173424
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- APPLICATION:
- INNER PRIMARY
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- UNITS:
- 5 PACK
$19.10
