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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DRAG SPECIALTIES Lifter Cover - Chrome - Twin Cam I04-0889C
DRAG SPECIALTIES
$113.37A quality lifter cover protects your Twin Cam engine's internal components from dust, debris, and moisture while maintaining a clean, finished appearance in the engine bay. This chrome-finished cover delivers both functional protection and visual...09401875- SKU:
- 09401875
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- TYPE:
- LIFTER
- MATERIAL:
- DIE-CAST
$113.37Qty in Cart: 0Quantity:Price:$113.37Subtotal: -
DRAG SPECIALTIES Lifter Cover - Black - Twin Cam I04-0889GB
DRAG SPECIALTIES
$95.35A quality lifter cover protects your Twin Cam engine's internal components from contamination while maintaining a clean, finished appearance in the engine bay. This die-cast aluminum cover resists warping and corrosion better than OEM alternatives,...09401876- SKU:
- 09401876
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- MATERIAL:
- DIE-CAST
- UNITS:
- KIT
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- TYPE:
- LIFTER
$95.35Qty in Cart: 0Quantity:Price:$95.35Subtotal: -
DRAG SPECIALTIES Pushrod Tube Kit - Big Twin 75711
DRAG SPECIALTIES
$138.81Pushrod tube degradation is one of the most common failure points in Big Twin engines, leading to oil leaks, loss of valve train precision, and catastrophic engine damage if left unchecked. The DRAG SPECIALTIES Pushrod Tube Kit delivers a complete,...DS193760- SKU:
- DS193760
- Availability:
- Ships Same Business Day
- Weight:
- 1.55 LBS
- BASE COLOR:
- SILVER
- BASE FINISH:
- CHROME
- TYPE:
- PUSHROD
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- TUBE KIT
$138.81Qty in Cart: 0Quantity:Price:$138.81Subtotal: -
DRAG SPECIALTIES Lifter Block - Chrome - Shovelhead 20489-BX-LB1
DRAG SPECIALTIES
$202.95A properly functioning lifter block is critical for maintaining correct valve timing and preventing catastrophic engine damage in classic Shovelhead applications. This DRAG SPECIALTIES lifter block delivers precision engineering with the durability...DS194025- SKU:
- DS194025
- Availability:
- Ships Same Business Day
- Weight:
- 3.69 LBS
- BASE COLOR:
- SILVER
- BASE FINISH:
- CHROME
- MATERIAL:
- CAST IRON
- UNITS:
- PAIR
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- LIFTER BLOCK
- RIDING STYLE:
- STREET
$202.95 -
DRAG SPECIALTIES Lifter Blocks - Chrome - Evolution/Big Twin 26533-BOX
DRAG SPECIALTIES
$234.95Proper valve train geometry is critical for consistent lifter performance and engine reliability, especially in high-rpm applications where precision matters. These DRAG SPECIALTIES lifter blocks deliver the exact spacing and alignment your Evolution or...DS194054- SKU:
- DS194054
- Availability:
- Ships Same Business Day
- Weight:
- 1.81 LBS
- BASE FINISH:
- POLISHED
- MATERIAL:
- ALUMINUM
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- LIFTER BLOCK
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- COLOR/FINISH:
- POLISHED CHROME
$234.95Qty in Cart: 0Quantity:Price:$234.95Subtotal: -
DRAG SPECIALTIES Peaked Design Oil Dipstick - FL 63187C
DRAG SPECIALTIES
$62.49An OEM-spec dipstick replacement ensures accurate oil level readings and maintains the factory appearance of your engine bay. The chrome-plated peaked design combines functionality with clean aesthetics, while the swiveling mechanism provides easy access...07100121- SKU:
- 07100121
- Availability:
- Ships Same Business Day
- Weight:
- 0.41 LBS
- PRODUCT NAME:
- OIL DIPSTICK
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- SWIVEL
$62.49Qty in Cart: 0Quantity:Price:$62.49Subtotal: -
DRAG SPECIALTIES Chrome Side Cover - FXR 301416-BBL-PB
DRAG SPECIALTIES
$151.53If you're running an FXR and want to elevate the visual impact without sacrificing function, Drag Specialties chrome side covers deliver a clean, polished aesthetic that commands attention. These precision-chromed steel replacements transform the stock...DS373675- SKU:
- DS373675
- Availability:
- Ships Same Business Day
- Weight:
- 2.50 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- TYPE:
- SIDE
- PRODUCT NAME:
- COVER
$151.53Qty in Cart: 0Quantity:Price:$151.53Subtotal: -
DRAG SPECIALTIES Rocker Box - Chrome - Sportster 302076-BX-LB2
DRAG SPECIALTIES
$364.59Rocker boxes are critical to your Sportster's top-end oiling system—they house the rocker arms and direct oil flow to valve components under high RPM conditions. A leaking or worn rocker box compromises oil delivery, risking valve train damage and...DS376512- SKU:
- DS376512
- Availability:
- Ships Same Business Day
- Weight:
- 4.19 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- COVER
- TYPE:
- ROCKER BOX
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$364.59 -
DRAG SPECIALTIES Rocker Box Cover - Big Twin 037001-BX-LB2
DRAG SPECIALTIES
$364.59Rocker box covers seal critical engine components against oil leakage and contamination, making them essential maintenance items for Big Twin motors. Drag Specialties' precision-engineered covers deliver exact fitment and reliable sealing without...DS376513- SKU:
- DS376513
- Availability:
- Ships Same Business Day
- Weight:
- 4.50 LBS
- UNITS:
- KIT
- PRODUCT NAME:
- COVER
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
$364.59 -
DRAG SPECIALTIES Rear Master Cylinder Gasket 17-0063A-HC3
DRAG SPECIALTIES
$47.20A deteriorating master cylinder gasket compromises your braking system's integrity, leading to fluid leakage, reduced brake pressure, and potential safety hazards. This OEM-equivalent replacement gasket restores a proper seal on your stock master...DS174493- SKU:
- DS174493
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- MOUNTING POSITION:
- REAR
- TYPE:
- MASTER CYLINDER COVER
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
$47.20 -
DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 140003HP-BX18
DRAG SPECIALTIES
$19.90Engine longevity depends on clean oil, and clean oil starts with superior filtration. The DRAG SPECIALTIES Magnetic Ring Oil Filter captures ferrous metal particles before they circulate through your engine, protecting critical bearing surfaces and...DS275126- SKU:
- DS275126
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- UNITS:
- EACH
- COLOR/FINISH:
- CHROME
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
$19.90Qty in Cart: 0Quantity:Price:$19.90Subtotal: -
DRAG SPECIALTIES Replacement Oil Tank Cap 03-0011-BC104
DRAG SPECIALTIES
$14.79A worn or damaged oil tank cap compromises your engine's seal integrity, risking oil leakage and contamination that can degrade performance and damage internal components. This DRAG Specialties replacement cap restores a proper, secure seal with...DS350150- SKU:
- DS350150
- Availability:
- Ships Same Business Day
- Weight:
- 0.13 LBS
- TYPE:
- OIL FILLER CAP
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- CAP
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$14.79 -
DRAG SPECIALTIES Oil Filter - Chrome 14-0020C-BX18
DRAG SPECIALTIES
$12.55A quality oil filter is non-negotiable for engine longevity—it directly impacts how effectively contaminants are removed from your oil and how well your engine is protected under load. The Drag Specialties Chrome 14-0020C-BX18 delivers reliable...DS275108- SKU:
- DS275108
- Availability:
- Ships Same Business Day
- Weight:
- 0.75 LBS
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- UNITS:
- EACH
- STYLE:
- STANDARD
$12.55 -
DRAG SPECIALTIES Oil Filter - Black 14-0020B-BX18
DRAG SPECIALTIES
$10.45A quality oil filter is non-negotiable for engine longevity—it directly impacts how effectively contaminants are removed from your oil system. This Drag Specialties spin-on filter delivers reliable filtration across most Harley-Davidson models, ensuring...DS275109- SKU:
- DS275109
- Availability:
- Ships Same Business Day
- Weight:
- 0.69 LBS
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
- STYLE:
- STANDARD
- COLOR/FINISH:
- BLACK
- UNITS:
- EACH
$10.45 -
DRAG SPECIALTIES Oil Filter - Black 14-0018B-BX41
DRAG SPECIALTIES
$10.45A quality oil filter is non-negotiable for engine longevity and consistent performance. This Drag Specialties spin-on filter delivers reliable contaminant removal and optimal oil flow, protecting your H-D engine from wear and degradation. Keep your motor...DS275119- SKU:
- DS275119
- Availability:
- Ships Same Business Day
- Weight:
- 0.88 LBS
- COLOR/FINISH:
- BLACK
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- BASE COLOR:
- BLACK
- PRODUCT NAME:
- OIL FILTER
- STYLE:
- STANDARD
- FEATURES:
- WITHOUT NUT
- UNITS:
- EACH
$10.45 -
DRAG SPECIALTIES Magnetic Ring Oil Filter - Chrome - 3-1/4" 14-0020HP-BX18
DRAG SPECIALTIES
$19.90Engine longevity depends on clean oil circulating through your motor, and debris accumulation is your biggest enemy. This Drag Specialties magnetic oil filter captures ferrous particles before they circulate back through critical engine passages,...DS275188- SKU:
- DS275188
- Availability:
- Ships Same Business Day
- Weight:
- 0.81 LBS
- BASE FINISH:
- CHROME
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- OIL FILTER
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- CHROME
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- UNITS:
- EACH
$19.90 -
DRAG SPECIALTIES Oil Filter - Chrome 14-0003-BX18
DRAG SPECIALTIES
$12.55A quality oil filter is non-negotiable for engine longevity—it directly impacts how effectively contaminants are removed from your oil system. The DRAG Specialties Chrome Oil Filter delivers reliable filtration across most Harley-Davidson models,...DS275203- SKU:
- DS275203
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- COLOR/FINISH:
- CHROME
- STYLE:
- LATE (84 XL)
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- BASE FINISH:
- CHROME
- UNITS:
- EACH
$12.55 -
DRAG SPECIALTIES Oil Filter - Black 14-0003B-BX-18
DRAG SPECIALTIES
$9.40A quality oil filter is non-negotiable for engine longevity and performance. The Drag Specialties Black 14-0003B-BX-18 delivers consistent filtration across most Harley-Davidson models, protecting your engine from contaminants while maintaining optimal...DS275204- SKU:
- DS275204
- Availability:
- Ships Same Business Day
- Weight:
- 0.66 LBS
- STYLE:
- LATE (84 XL)
- UNITS:
- EACH
- FEATURES:
- WITHOUT NUT
- FILTER MEDIA MATERIAL:
- PAPER
- PRODUCT NAME:
- OIL FILTER
- RIDING STYLE:
- STREET
- TYPE:
- SPIN-ON
- COLOR/FINISH:
- BLACK
- BASE COLOR:
- BLACK
$9.40 -
DRAG SPECIALTIES Skull Points Cover - Big Twin 30-0185-PC
DRAG SPECIALTIES
$47.65If you're running a classic Big Twin and want a points cover that actually stands out, the DRAG Specialties Skull Points Cover delivers aggressive styling without sacrificing function. This die-cast piece gives your engine bay instant character while...19020185- SKU:
- 19020185
- Availability:
- Ships Same Business Day
- Weight:
- 0.71 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- MATERIAL:
- DIE-CAST
- STYLE:
- 3-D SKULL
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$47.65Qty in Cart: 0Quantity:Price:$47.65Subtotal: -
DRAG SPECIALTIES Skull Points Cover - Sportster 30-0186-PC
DRAG SPECIALTIES
$47.65The DRAG Specialties Skull Points Cover transforms your Sportster's ignition system into a custom statement piece while protecting critical engine components from dirt and debris. This die-cast cover features aggressive styling that commands attention,...19020186- SKU:
- 19020186
- Availability:
- Ships Same Business Day
- Weight:
- 0.70 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- MATERIAL:
- DIE-CAST
- RIDING STYLE:
- STREET
- STYLE:
- 3-D SKULL
- TYPE:
- POINTS
$47.65
