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
-
DRAG SPECIALTIES Replacement Rocker Arm - Front Exhaust - XL 1739457A-BX-LB1
DRAG SPECIALTIES
$87.93Rocker arms are critical to your engine's valve train geometry and timing precision. A worn or damaged unit throws off valve lift and duration, killing combustion efficiency and power output. This...DS193420- SKU:
- DS193420
- Availability:
- Ships Same Business Day
- Weight:
- 0.46 LBS
- MOUNTING POSITION:
- FRONT EXHAUST
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$87.93Qty in Cart: 0Quantity:Price:$87.93Subtotal: -
DRAG SPECIALTIES Replacement Rocker Arm - Rear Exhaust - XL 1739557A-BX-LB1
DRAG SPECIALTIES
$86.87Rocker arms are critical valve train components that directly impact your engine's breathing efficiency and overall performance reliability. A worn or damaged rear exhaust rocker arm forces your...DS193421- SKU:
- DS193421
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- APPLICATION:
- INTAKE
- MOUNTING POSITION:
- REAR EXHAUST
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
$86.87 -
DRAG SPECIALTIES Replacement Rocker Arm - Front Intake - XL 1739657A-BX-LB1
DRAG SPECIALTIES
$86.87Rocker arm wear directly impacts valve timing precision and engine reliability—compromised rocker arms lead to inconsistent valve actuation, loss of power, and potential catastrophic engine damage...DS193422- SKU:
- DS193422
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- MOUNTING POSITION:
- FRONT INTAKE
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$86.87 -
DRAG SPECIALTIES Replacement Rocker Arm - Rear Intake - XL 1739757A-BX-LB1
DRAG SPECIALTIES
$86.87Worn or damaged rocker arms compromise valve timing and lift, directly killing horsepower and engine reliability. This OEM-style replacement restores proper valve actuation geometry, ensuring...DS193423- SKU:
- DS193423
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MOUNTING POSITION:
- REAR INTAKE
- UNITS:
- PAIR
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- PRODUCT NAME:
- ROCKER ARM
- RIDING STYLE:
- STREET
$86.87 -
DRAG SPECIALTIES Points Cover - Chrome 30-0152K-BC223
DRAG SPECIALTIES
$24.33A chrome points cover does more than protect your ignition system from the elements—it's a visible detail that completes your bike's aesthetic when everything else is dialed in. If you've already...DS373919- SKU:
- DS373919
- Availability:
- Ships Same Business Day
- Weight:
- 0.19 LBS
- RIDING STYLE:
- STREET
- TYPE:
- POINTS
- COLOR/FINISH:
- CHROME
- STYLE:
- RADIUS
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$24.33 -
DRAG SPECIALTIES Rocker Cover Chrome - Evo/Big Twin 33-0082A-BXLB2
DRAG SPECIALTIES
$351.87A leaking rocker cover isn't just messy—it's a sign of gasket failure that'll compromise your engine's reliability and leave oil residue all over your motor. The DRAG Specialties chrome rocker cover...DS376502- SKU:
- DS376502
- Availability:
- Ships Same Business Day
- Weight:
- 4.25 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- ROCKER BOX KIT
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- BASE FINISH:
- CHROME
- UNITS:
- KIT
$351.87 -
DRAG SPECIALTIES Rocker Cover Top - Chrome - Big Twin 33-0082AGCBXLB2
DRAG SPECIALTIES
$117.61A leaking rocker cover gasket will compromise engine sealing and create an oil-weeping mess that invites contamination and corrosion. This Drag Specialties rocker cover top delivers exact OEM...DS376556- SKU:
- DS376556
- Availability:
- Ships Same Business Day
- Weight:
- 1.35 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- TOP COVER
- MOUNTING POSITION:
- TOP
- TYPE:
- ROCKER BOX
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
$117.61 -
DRAG SPECIALTIES Braided Oil/Fuel Line - Stainless Steel - 3/8" - 6' 096617-HC9
DRAG SPECIALTIES
$56.13Braided stainless steel lines provide superior durability and heat resistance compared to standard rubber hoses, critical for high-performance engine bays where temperatures and pressure fluctuations...DS096617- SKU:
- DS096617
- Availability:
- Ships Same Business Day
- Weight:
- 1.13 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- MATERIAL:
- STAINLESS STEEL
- INSIDE DIAMETER METRIC:
- 9.5 MM
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- HOSE SIZE:
- -6
- LENGTH IMPERIAL:
- 6'
- LENGTH METRIC:
- 183 CM
- TYPE:
- FUEL
- BASE FINISH:
- NATURAL
- INSIDE DIAMETER IMPERIAL:
- 3/8'
- PRODUCT NAME:
- HOSE
- STYLE:
- BRAIDED
- UNITS:
- EACH
$56.13 -
DRAG SPECIALTIES Braided Hose - Black - 5/16" - 6' 096631-HC9
DRAG SPECIALTIES
$50.83A quality braided hose is fundamental to any performance fuel or oil system—it resists abrasion, withstands pressure spikes, and maintains integrity under track conditions. This DRAG SPECIALTIES hose...DS096672- SKU:
- DS096672
- Availability:
- Ships Same Business Day
- Weight:
- 0.56 LBS
- COLOR/FINISH:
- BLACK
- TYPE:
- FUEL
- INSIDE DIAMETER METRIC:
- 7.9 MM
- LENGTH METRIC:
- 183 CM
- MATERIAL:
- NYLON
- HOSE SIZE:
- -5
- LENGTH IMPERIAL:
- 6'
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- BASE COLOR:
- BLACK
- INSIDE DIAMETER IMPERIAL:
- 5/16'
- PRODUCT NAME:
- HOSE
- STYLE:
- BRAIDED
- UNITS:
- EACH
$50.83Qty in Cart: 0Quantity:Price:$50.83Subtotal: -
DRAG SPECIALTIES Braided Hose - Black - 1/2" - 3' 096636-HC9
DRAG SPECIALTIES
$33.87Reliable fluid transfer is non-negotiable in high-performance applications, and this braided hose delivers the durability your build demands. The reinforced nylon braid provides abrasion resistance...DS096677- SKU:
- DS096677
- Availability:
- Ships Same Business Day
- Weight:
- 0.50 LBS
- COLOR/FINISH:
- BLACK
- LENGTH METRIC:
- 91 CM
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- INSIDE DIAMETER METRIC:
- 12.7 MM
- PRODUCT NAME:
- HOSE
- HOSE SIZE:
- -8
- INSIDE DIAMETER IMPERIAL:
- 1/2'
- STYLE:
- BRAIDED
- LENGTH IMPERIAL:
- 3'
- MATERIAL:
- NYLON
- TYPE:
- FUEL
$33.87 -
DRAG SPECIALTIES Braided Oil/Fuel Line - Stainless Steel - 3/8" - 3' 096607-HC9
DRAG SPECIALTIES
$30.69A quality braided line is non-negotiable in any high-performance fuel or oil system—flex and vibration will degrade standard rubber hoses, leading to leaks and catastrophic engine damage. This...DS096607- SKU:
- DS096607
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- COLOR/FINISH:
- STAINLESS STEEL
- INSIDE DIAMETER METRIC:
- 9.5 MM
- RIDING STYLE:
- STREET
- TYPE:
- FUEL
- TYPE:
- OIL
- BASE FINISH:
- NATURAL
- INSIDE DIAMETER IMPERIAL:
- 3/8'
- LENGTH METRIC:
- 91 CM
- MATERIAL:
- STAINLESS STEEL
- PRODUCT NAME:
- HOSE
- STYLE:
- BRAIDED
- UNITS:
- EACH
- HOSE SIZE:
- -6
- LENGTH IMPERIAL:
- 3'
$30.69Qty in Cart: 0Quantity:Price:$30.69Subtotal: -
DRAG SPECIALTIES Bolt Covers - Chrome - 80" 35-0101-BC251
DRAG SPECIALTIES
$82.63Finishing touches define a truly dialed-in engine bay. These Drag Specialties bolt covers consolidate headbolt and spark plug base coverage into a single, cohesive component—eliminating the need for...DS305003- SKU:
- DS305003
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- PRODUCT NAME:
- BOLT COVER
- TYPE:
- HEADBOLT
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$82.63 -
DRAG SPECIALTIES Replacement Rubbers 35-0098-A-HC3
DRAG SPECIALTIES
$5.25Engine bay aesthetics matter, especially when you've invested in quality components. Rather than sourcing individual headbolt and spark plug covers, this all-in-one die-cast aluminum solution...DS305005- SKU:
- DS305005
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- GROMMET
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- HEADBOLT
- UNITS:
- PAIR
$5.25 -
DRAG SPECIALTIES Head Bolt/Spark Plug Covers - Chrome - XL 35-0102-BC251
DRAG SPECIALTIES
$82.63Engine bay aesthetics matter when you're investing in a quality build, and piecemeal coverage leaves gaps—literally and visually. Drag Specialties' integrated head bolt and spark plug covers...DS305009- SKU:
- DS305009
- Availability:
- Ships Same Business Day
- Weight:
- 0.90 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- BOLT
- UNITS:
- EACH
- PRODUCT NAME:
- BOLT COVER
$82.63 -
DRAG SPECIALTIES Oil Tank - Black - Sportster 22-0055GB
DRAG SPECIALTIES
$297.81Sportster riders who demand reliable oil management need a tank that matches OE specifications without compromise. This DRAG Specialties oil tank delivers the exact capacity and fitment your bike...07100163- SKU:
- 07100163
- Availability:
- Ships Same Business Day
- Weight:
- 5.30 LBS
- CAPACITY IMPERIAL:
- 3 US QUART
- COLOR/FINISH:
- GLOSS
- CAPACITY METRIC:
- 2.8 LITER
- MATERIAL:
- STEEL
- UNITS:
- EACH
- BASE FINISH:
- GLOSS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- OIL TANK
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
$297.81Qty in Cart: 0Quantity:Price:$297.81Subtotal: -
DRAG SPECIALTIES Oil Dipstick - FLT 03-0070PC
DRAG SPECIALTIES
$54.01A quality dipstick is essential for accurate oil level monitoring, which directly impacts engine longevity and performance. This billet aluminum dipstick delivers precision engineering with durable...07100002- SKU:
- 07100002
- Availability:
- Ships Same Business Day
- Weight:
- 0.59 LBS
- MATERIAL:
- ALUMINUM
- BASE FINISH:
- CHROME
- TYPE:
- OIL FILLER CAP
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- OIL DIPSTICK
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$54.01 -
DRAG SPECIALTIES Oil Filter with Nut - Black 14-0020BK-BX18
DRAG SPECIALTIES
$13.60Regular oil filter changes are non-negotiable for engine longevity and performance. This Drag Specialties spin-on filter delivers reliable contaminant removal and consistent oil flow across...07120021- SKU:
- 07120021
- Availability:
- Ships Same Business Day
- Weight:
- 0.79 LBS
- FEATURES:
- INCLUDES NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- STYLE:
- STANDARD
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$13.60 -
DRAG SPECIALTIES Oil Line Seals - 10-Pack 74913
DRAG SPECIALTIES
$27.51Oil line seals are critical components in any forced-induction or high-flow oil system—a single leak can compromise engine lubrication and lead to catastrophic failure. DRAG Specialties seals are...07110223- SKU:
- 07110223
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- BLACK
- UNITS:
- 10 PACK
- FEATURES:
- STANDARD
- MATERIAL:
- RUBBER
- PRODUCT NAME:
- SEAL
- RIDING STYLE:
- STREET
- TYPE:
- OIL LINE
- BASE COLOR:
- BLACK
$27.51Qty in Cart: 0Quantity:Price:$27.51Subtotal: -
On Sale
S&S CYCLE Oil Pump with Gears 31-6293
S&S CYCLE
MSRP: $715.95Now: $658.67Was: $715.95The S&S Cycle oil pump delivers consistent pressure and flow to keep your engine lubricated under sustained high-RPM racing conditions. This pump's optimized design reduces parasitic losses while the...09320186- SKU:
- 09320186
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- PRODUCT NAME:
- PUMP
- UNITS:
- KIT
MSRP: $715.95Now: $658.67Was: $715.95 -
On Sale
S&S CYCLE Oil Pump with Gears 31-6294
S&S CYCLE
MSRP: $715.95Now: $658.67Was: $715.95An efficient oil pump is the foundation of engine longevity—it delivers consistent pressure and volume to critical bearing surfaces under high rpm and extreme conditions. The S&S Cycle Oil Pump with...09320187- SKU:
- 09320187
- Availability:
- Ships Same Business Day
- Weight:
- 3.70 LBS
- RIDING STYLE:
- STREET
- TYPE:
- OIL
- UNITS:
- KIT
- PRODUCT NAME:
- PUMP
MSRP: $715.95Now: $658.67Was: $715.95
