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
-
GARDNER-WESTCOTT Stainless Steel - Primary SP-10-18-08
GARDNER-WESTCOTT
$65.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189377- SKU:
- DS189377
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BOLT KIT
- TYPE:
- PRIMARY COVER ONLY
- BASE COLOR:
- SILVER
- STYLE:
- SOCKET-HEAD
- COLOR/FINISH:
- SILVER
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$65.95 -
GARDNER-WESTCOTT Stainless Steel Motor Set SP-88-98
GARDNER-WESTCOTT
$334.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189372- SKU:
- DS189372
- Availability:
- Ships Same Business Day
- Weight:
- 3.40 LBS
- BASE COLOR:
- SILVER
- MEASUREMENT SYSTEM:
- SAE
- STYLE:
- SOCKET-HEAD
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- BOLT KIT
- COLOR/FINISH:
- POLISHED
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SET
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
$334.95 -
GARDNER-WESTCOTT Stainless Steel Motor Set SP-88-79
GARDNER-WESTCOTT
$284.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189370- SKU:
- DS189370
- Availability:
- Ships Same Business Day
- Weight:
- 2.85 LBS
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SET
- BASE COLOR:
- SILVER
- BASE FINISH:
- NATURAL
- MEASUREMENT SYSTEM:
- SAE
- PRODUCT NAME:
- BOLT KIT
- STYLE:
- SOCKET-HEAD
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- POLISHED
- COLOR/FINISH:
- SILVER
- UNITS:
- KIT
- COLOR/FINISH:
- NATURAL
- MATERIAL:
- STAINLESS STEEL
$284.95 -
GARDNER-WESTCOTT Motor P-80-87
GARDNER-WESTCOTT
$309.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189019- SKU:
- DS189019
- Availability:
- Ships Same Business Day
- Weight:
- 2.71 LBS
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SET
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- MEASUREMENT SYSTEM:
- SAE
- STYLE:
- SOCKET-HEAD
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
$309.95 -
GARDNER-WESTCOTT Stainless Steel Motor SP-80-87
GARDNER-WESTCOTT
$271.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189018- SKU:
- DS189018
- Availability:
- Ships Same Business Day
- Weight:
- 2.69 LBS
- BASE FINISH:
- NATURAL
- BASE FINISH:
- POLISHED
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SET
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- MEASUREMENT SYSTEM:
- SAE
- STYLE:
- SOCKET-HEAD
- COLOR/FINISH:
- SILVER
- COLOR/FINISH:
- NATURAL
- COLOR/FINISH:
- POLISHED
- MATERIAL:
- STAINLESS STEEL
$271.95Qty in Cart: 0Quantity:Price:$271.95Subtotal: -
GARDNER-WESTCOTT Motor P-80-88
GARDNER-WESTCOTT
$312.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS189015- SKU:
- DS189015
- Availability:
- Ships Same Business Day
- Weight:
- 2.70 LBS
- COLOR/FINISH:
- CHROME
- COLOR/FINISH:
- POLISHED
- BASE COLOR:
- SILVER
- MEASUREMENT SYSTEM:
- SAE
- STYLE:
- SOCKET-HEAD
- BASE FINISH:
- POLISHED
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- UNITS:
- KIT
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BOLT KIT
- RIDING STYLE:
- STREET
- TYPE:
- MOTOR SET
$312.95 -
JAMES GASKET Complete Motor Gasket Kit - XL 17026-73
JAMES GASKET
$125.95To-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.DS181179- SKU:
- DS181179
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- THICKNESS IMPERIAL:
- 0,032'
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- COMPLETE
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- RIDING STYLE:
- STREET
$125.95 -
JAMES GASKET Complete Motor Gasket Kit - XL 17026-86
JAMES GASKET
$167.95To-quality gaskets, oil seals, and o-rings necessary to rebuild an engine, Made in the U.S.A.DS181178- SKU:
- DS181178
- Availability:
- Ships Same Business Day
- Weight:
- 1.94 LBS
- TYPE:
- COMPLETE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
$167.95 -
GARDNER-WESTCOTT Cam Cover Bolts - Twin Cam P-10-18-06
GARDNER-WESTCOTT
$35.95Motor sets include cam cover, primary cover, transmission side cover, oil hose cover, lifter base, rocker box, front inner primary, washer, motor and transmission mount bolts, Side cover sets include cam, primary, oil hose cover and transmission side...DS175006- SKU:
- DS175006
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- POLISHED
- TYPE:
- CAM COVER
- BASE FINISH:
- POLISHED
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- MEASUREMENT SYSTEM:
- SAE
- RIDING STYLE:
- STREET
- STYLE:
- SOCKET-HEAD
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- SILVER
- MATERIAL:
- STEEL
- PRODUCT NAME:
- BOLT KIT
$35.95 -
JAMES GASKET Seal & Ferrule Oil Line Feed Tube 63528-92
JAMES GASKET
$19.80Made in the U.S.A.DS174992- SKU:
- DS174992
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- UNITS:
- 5 PACK
- APPLICATION:
- OIL LINE
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- SEAL
$19.80 -
JAMES GASKET Induction Module Gasket Kit - FL 27202-95-K
JAMES GASKET
$24.95Kit contains fuel fitting O-rings, Made in the U.S.A.DS174988- SKU:
- DS174988
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET KIT
- TYPE:
- FUEL INJECTOR
- UNITS:
- KIT
$24.95 -
JAMES GASKET Check Valve O-Ring 11246
JAMES GASKET
$5.00Made in the U.S.A.DS174985- SKU:
- DS174985
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- UNITS:
- 10 PACK
- APPLICATION:
- CHECK VALVE
- PRODUCT NAME:
- O-RING
- RIDING STYLE:
- STREET
- TYPE:
- OIL
$5.00 -
JAMES GASKET Big Bore Base Steel - Big Twin 16777-66-X
JAMES GASKET
$44.95Require no gasket sealer, Made in the U.S.A.DS174983- SKU:
- DS174983
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- BORE SIZE IMPERIAL:
- 3.625'
- FEATURES:
- BEADED
- THICKNESS METRIC:
- 0.81 MM
- TYPE:
- CYLINDER BASE
- THICKNESS IMPERIAL:
- 0,032'
- RIDING STYLE:
- STREET
- UNITS:
- SET
$44.95 -
JAMES GASKET Big Bore Top End Gasket Kit - 3-5/8" 17034-78-S
JAMES GASKET
$88.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS174982- SKU:
- DS174982
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- TYPE:
- TOP END
- UNITS:
- KIT
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
$88.95 -
JAMES GASKET Metal Base Gasket - 3-5/8" - Big Twin 16777-66-SX
JAMES GASKET
$44.95Require no gasket sealer, Made in the U.S.A.DS174980- SKU:
- DS174980
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- FEATURES:
- BEADED
- MATERIAL:
- STEEL
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
$44.95 -
JAMES GASKET Top End Gasket Kit - E EL 17034-38
JAMES GASKET
$59.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS174975- SKU:
- DS174975
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- KIT
$59.95 -
JAMES GASKET Top End Gasket Kit - FL/FLH 17034-66-X
JAMES GASKET
$113.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS174973- SKU:
- DS174973
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- TYPE:
- TOP END
- UNITS:
- KIT
$113.95 -
JAMES GASKET Top End Gasket Kit - 3-5/8" - EVO/Big Twin 17033-83-S
JAMES GASKET
$107.95Top-quality gaskets, oil seals and O-rings necessary to rebuild an engine, Made in the U.S.A.DS174972- SKU:
- DS174972
- Availability:
- Ships Same Business Day
- Weight:
- 0.63 LBS
- RIDING STYLE:
- STREET
- THICKNESS IMPERIAL:
- 0,045'
- PRODUCT NAME:
- GASKET KIT
- BORE SIZE IMPERIAL:
- 3.625'
- THICKNESS METRIC:
- 1.14 MM
- TYPE:
- TOP END
- UNITS:
- KIT
$107.95 -
JAMES GASKET Complete Gasket Set - E-EL 17028-36
JAMES GASKET
$90.95Contain gaskets, oil seals and O-rings necessary to completely rebuild a Panhead engine, Made in the U.S.A.DS174965- SKU:
- DS174965
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- TYPE:
- COMPLETE
- TYPE:
- MOTOR
- PRODUCT NAME:
- GASKET KIT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$90.95 -
JAMES GASKET Primary Gasket - .62" 34952-52-A
JAMES GASKET
$65.80Top quality gaskets, seals and o-rings meet or exceed OEM specifications, Primary gasket features silicone beading, Made in the U.S.A.DS174963- SKU:
- DS174963
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- STYLE:
- PRIMARY
- THICKNESS METRIC:
- 1.60 MM
- RIDING STYLE:
- STREET
- MATERIAL:
- PAPER
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.062'
- TYPE:
- COVER
- UNITS:
- 10 PACK
$65.80
