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
-
ULTRACOOL Oil Cooler Kit - Chrome RF-2SS
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130149- SKU:
- 07130149
- Availability:
- Ships Same Business Day
- Weight:
- 7.50 LBS
- BASE FINISH:
- NATURAL
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- BELOW REGULATOR
- UNITS:
- KIT
- MOUNTING POSITION:
- CENTER MOUNT
- PRODUCT NAME:
- OIL COOLER
$549.99 -
On Sale
Wiseco Piston Kit 1984-1998 Harley-Davidson FLHR Road King K1666
WISECO
MSRP: $447.95Now: $348.00Was: $447.95If you're rebuilding a Big Twin engine or planning an overbore, you need pistons engineered to handle sustained performance without compromising reliability. The Wiseco K1666 Kit delivers precision-forged components and complete gasket coverage,...K1666- SKU:
- K1666
- Availability:
- Ships Same Business Day
- Weight:
- 2.63 LBS
- DISPLACEMENT:
- 1345 CC
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,010'
- BORE OVERSIZE - IMPERIAL:
- +0.010'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- PRODUCT NAME:
- REBUILD KIT
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.508'
- UNITS:
- EACH
MSRP: $447.95Now: $348.00Was: $447.95 -
On Sale
Wiseco Piston Kit 1998 Harley-Davidson FLHRI Road King K1667
WISECO
MSRP: $447.95Now: $348.00Was: $447.95Whether you're planning a full top-end rebuild or pushing your Big Twin into overbore territory, the Wiseco K1667 Piston Kit delivers the precision engineering needed to sustain increased compression and power output. This complete solution eliminates...K1667- SKU:
- K1667
- Availability:
- Ships Same Business Day
- Weight:
- 2.45 LBS
- PRODUCT NAME:
- REBUILD KIT
- RIDING STYLE:
- STREET
- BORE - OVERSIZE:
- +0,020'
- DISPLACEMENT:
- 1353 CC
- STROKE LENGTH IMPERIAL:
- 4-1/4'
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- COMPRESSION RATIO IMPERIAL:
- 10.0:1
- PISTON MATERIAL:
- ALUMINUM
- PISTON MATERIAL:
- FORGED
- BORE SIZE IMPERIAL:
- 3.518'
- TYPE:
- TOP END
- UNITS:
- EACH
MSRP: $447.95Now: $348.00Was: $447.95 -
On Sale
Wiseco 1988-2003 Harley-Davidson XLH1200 Sportster 1200 Piston Kit K1687
WISECO
MSRP: $409.95Now: $348.00Was: $409.95A worn or damaged piston compromises compression, power delivery, and engine longevity—making a quality rebuild kit essential for any serious Sportster owner. The Wiseco K1687 delivers OEM-equivalent performance with forged construction that handles...K1687- SKU:
- K1687
- Availability:
- Ships Same Business Day
- Weight:
- 2.38 LBS
- COMPRESSION RATIO IMPERIAL:
- 10.5:1
- PISTON MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STROKE LENGTH IMPERIAL:
- 3-13/16'
- BORE OVERSIZE - IMPERIAL:
- +0.020'
- DISPLACEMENT:
- 1200 CC
- PISTON MATERIAL:
- FORGED
- BORE - OVERSIZE:
- +0,020'
- PRODUCT NAME:
- REBUILD KIT
- TYPE:
- TOP END
- BORE SIZE IMPERIAL:
- 3.498'
- UNITS:
- EACH
MSRP: $409.95Now: $348.00Was: $409.95Qty in Cart: 0Quantity:Price:MSRP: $409.95Now: $348.00Was: $409.95Subtotal: -
COVINGTONS Points Cover - Chrome - M8 C1896-B
COVINGTONS
$77.95A points cover isn't just cosmetic—it protects your ignition system from dirt, moisture, and debris while maintaining the clean aesthetic your engine deserves. This Covington cover delivers genuine billet construction with a mirror-polished chrome finish...09402002- SKU:
- 09402002
- Availability:
- Ships Same Business Day
- Weight:
- 0.15 LBS
- COLOR/FINISH:
- BLACK
- RIDING STYLE:
- STREET
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- POINTS
- PRODUCT NAME:
- COVER
- STYLE:
- RIPPER
- UNITS:
- EACH
$77.95 -
COVINGTONS Rocker Box Cover - Chrome - Twin Cam C1283-C
COVINGTONS
$1,140.95Your Twin Cam engine deserves finishes that match its performance. COVINGTONS Rocker Box Covers deliver the polished aesthetics your build demands while protecting critical engine components from dust, debris, and the elements. CNC-machined from billet...09401055- SKU:
- 09401055
- Availability:
- Ships Same Business Day
- Weight:
- 11.85 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- STYLE:
- SMOOTH
- UNITS:
- PAIR
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER BOX
- MATERIAL:
- BILLET ALUMINUM
$1,140.95 -
COVINGTONS Rocker Box Cover - Chrome - Twin Cam C1282-C
COVINGTONS
$1,140.95A rocker box cover isn't just cosmetic—it protects your Twin Cam's internal components from debris and moisture while giving your engine bay a finished appearance that reflects your attention to detail. COVINGTONS delivers this protection without...09400748- SKU:
- 09400748
- Availability:
- Ships Same Business Day
- Weight:
- 8.84 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- MOUNTING POSITION:
- FRONT
- PRODUCT NAME:
- COVER
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- STYLE:
- FINNED
- TYPE:
- ROCKER BOX
$1,140.95Qty in Cart: 0Quantity:Price:$1,140.95Subtotal: -
COVINGTONS Rocker Box Cover - Dimpled Black - Twin Cam C1292-B
COVINGTONS
$823.95The COVINGTONS Rocker Box Cover delivers a clean, finished look while protecting critical top-end components from contamination and debris. CNC-machined from billet aluminum, this cover meets OEM specifications without compromising durability or...09401356- SKU:
- 09401356
- Availability:
- Ships Same Business Day
- Weight:
- 5.85 LBS
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- FRONT
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- BLACK
- STYLE:
- DIMPLED
- UNITS:
- PAIR
$823.95 -
On Sale
Belt Drives Ltd Cam Cover Conversion Kit for Harley-Davidson Twin Cam 1999-2006 BDL-CC-100
BELT DRIVES LTD.
MSRP: $1,240.31Now: $855.86Was: $1,240.31If you're running a Twin Cam engine in a custom build and want the simplicity and reliability of Evolution-style ignition electronics, this conversion kit eliminates the complexity of your current system while maintaining full compatibility with...09400863- SKU:
- 09400863
- Availability:
- Ships Same Business Day
- Weight:
- 4.45 LBS
- TYPE:
- CAM
- COLOR/FINISH:
- POLISHED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MATERIAL:
- BILLET ALUMINUM
MSRP: $1,240.31Now: $855.86Was: $1,240.31 -
On Sale
ARLEN NESS Point Cover - Red 700-014
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A quality point cover protects your ignition system from moisture, debris, and road contaminants while presenting a finished appearance that reflects your attention to detail. The Arlen Ness Point Cover delivers dependable sealing with the visual upgrade...09401917- SKU:
- 09401917
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- RED
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- UNITS:
- EACH
- PRODUCT NAME:
- COVER
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Point Cover - Titanium 700-015
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A point cover serves as both a functional engine component and a visual statement on your build. The ARLEN NESS Titanium 700-015 delivers precision machining and corrosion resistance in a single upgrade, protecting your ignition system while elevating...09401918- SKU:
- 09401918
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- MACHINED
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- TITANIUM
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- POINTS
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Point Cover - Black 700-024
ARLEN NESS
MSRP: $59.95Now: $54.55Was: $59.95A point cover serves as both a functional and aesthetic component, protecting your ignition system from moisture and contamination while presenting a finished look to your engine bay. The ARLEN NESS Point Cover delivers reliable protection with a clean...09401919- SKU:
- 09401919
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- BLACK
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $59.95Now: $54.55Was: $59.95Qty in Cart: 0Quantity:Price:MSRP: $59.95Now: $54.55Was: $59.95Subtotal: -
On Sale
ARLEN NESS Point Cover - Orange 700-029
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95The ARLEN NESS Point Cover elevates your engine's visual presentation while protecting critical internal components from dust and debris. This chrome-accented cover delivers the aesthetic refinement that separates a well-maintained build from an...09401922- SKU:
- 09401922
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- UNITS:
- EACH
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Points Cover - Titanium 700-031
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A points cover serves as both protective housing and visual statement on your engine—Arlen Ness engineered this titanium version to deliver corrosion resistance and weight savings without sacrificing durability. The precision-machined design ensures...09401924- SKU:
- 09401924
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- COVER
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- TITANIUM
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Points Cover - Black 700-010
ARLEN NESS
MSRP: $59.95Now: $54.55Was: $59.95A points cover serves as both a functional shield and a visual statement on your engine. The ARLEN NESS Points Cover protects your ignition points from moisture, dirt, and debris while delivering the clean, finished appearance expected on a show-quality...09401949- SKU:
- 09401949
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- BLACK
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
MSRP: $59.95Now: $54.55Was: $59.95 -
On Sale
ARLEN NESS Pushrod Tube Kit - Black 03-643
ARLEN NESS
MSRP: $229.95Now: $209.25Was: $229.95Precision pushrod geometry directly impacts valve train reliability and engine performance—especially in high-RPM applications where tolerances matter. The ARLEN NESS Pushrod Tube Kit delivers CNC-machined construction that eliminates deflection while...09280090- SKU:
- 09280090
- Availability:
- Ships Same Business Day
- Weight:
- 0.76 LBS
- MATERIAL:
- BILLET ALUMINUM
- TYPE:
- PUSHROD
- PRODUCT NAME:
- TUBE KIT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- BLACK
- MODEL:
- DEEP CUT
- UNITS:
- SET OF 4
- BASE COLOR:
- BLACK
- BASE FINISH:
- ANODIZED
MSRP: $229.95Now: $209.25Was: $229.95Qty in Cart: 0Quantity:Price:MSRP: $229.95Now: $209.25Was: $229.95Subtotal: -
On Sale
ARLEN NESS Point Cover - Blue 700-027
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A quality point cover protects your ignition system from moisture, debris, and heat while maintaining the clean aesthetic of your engine bay. The ARLEN NESS Point Cover delivers both functional protection and visual impact with its striking blue finish...09401920- SKU:
- 09401920
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLUE
- STYLE:
- 10 GAUGE
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- MATERIAL:
- 6061 T-6 ALUMINUM
- COLOR/FINISH:
- MACHINED
- TYPE:
- POINTS
- UNITS:
- EACH
MSRP: $69.95Now: $63.65Was: $69.95Qty in Cart: 0Quantity:Price:MSRP: $69.95Now: $63.65Was: $69.95Subtotal: -
On Sale
ARLEN NESS Point Cover - Gold 700-028
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A quality point cover protects critical engine components from dirt, moisture, and debris while maintaining the clean, finished look your engine deserves. The ARLEN NESS Point Cover delivers both functional durability and polished aesthetics, with...09401921- SKU:
- 09401921
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- GOLD
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- 6061 T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- MACHINED
- TYPE:
- POINTS
- UNITS:
- EACH
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Point Cover - Red 700-030
ARLEN NESS
MSRP: $69.95Now: $63.65Was: $69.95A quality point cover does more than protect your ignition system—it's a visible statement of craftsmanship on your engine. The Arlen Ness Point Cover in red combines OEM-level functionality with custom aesthetics, giving you reliable performance without...09401923- SKU:
- 09401923
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- COLOR/FINISH:
- RED
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
MSRP: $69.95Now: $63.65Was: $69.95 -
On Sale
ARLEN NESS Points Cover - Chrome 700-009
ARLEN NESS
MSRP: $59.95Now: $54.55Was: $59.95A points cover serves as both a protective barrier and a visual statement on your engine. The ARLEN NESS Points Cover keeps critical ignition components shielded from moisture, debris, and heat while delivering the polished aesthetic that separates a...09401950- SKU:
- 09401950
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- COVER
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- RIDING STYLE:
- STREET
MSRP: $59.95Now: $54.55Was: $59.95
