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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ARLEN NESS Cam Cover - Titanium 03-986
ARLEN NESS
$329.95The ARLEN NESS Cam Cover 03-986 delivers a meaningful upgrade over stock die-cast components by replacing flex and wear with precision-machined rigidity. Constructed from 6061 T-6 forged aluminum, this cover resists thermal stress and vibration far...09401904- SKU:
- 09401904
- Availability:
- Ships Same Business Day
- Weight:
- 1.51 LBS
- TYPE:
- CAM
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- TITANIUM
- MATERIAL:
- 6061 T-6 ALUMINUM
- MODEL:
- 10 GAUGE
$329.95 -
ARLEN NESS Lifter Block - Titanium 12-575
ARLEN NESS
$209.95The ARLEN NESS Lifter Block 12-575 provides the precision spacing and alignment your engine build demands, ensuring accurate valve train geometry and eliminating costly guesswork during assembly. CNC-machined from billet aluminum, this component delivers...09401906- SKU:
- 09401906
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- MATERIAL:
- 6061-T6 BILLET ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- TITANIUM
- MODEL:
- 10 GAUGE
- TYPE:
- LIFTER BLOCK
$209.95 -
ARLEN NESS Rocker Cover - Black 18-256
ARLEN NESS
$549.95If you're looking to elevate your engine's visual presence without compromising function, the ARLEN NESS Rocker Cover delivers a precision-engineered alternative to stock top covers. This billet aluminum piece transforms the upper engine aesthetic while...09401909- SKU:
- 09401909
- Availability:
- Ships Same Business Day
- Weight:
- 3.71 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$549.95 -
ARLEN NESS Rocker Cover - Titanium 18-257
ARLEN NESS
$549.95If you're looking to elevate your engine's visual presence while maintaining OEM reliability, the ARLEN NESS Rocker Cover delivers the custom aesthetic your build deserves. This CNC-machined billet piece replaces your factory top rocker box cover with a...09401910- SKU:
- 09401910
- Availability:
- Ships Same Business Day
- Weight:
- 3.66 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- COLOR/FINISH:
- TITANIUM
- PRODUCT NAME:
- COVER
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- MODEL:
- 10 GAUGE
$549.95 -
ARLEN NESS Rocker Cover - Black 18-266
ARLEN NESS
$699.95Carved from 6061 T-6 forged billet aluminum, Drastically changes the look of your engine, Replaces OEM top rocker box covers, Includes necessary gaskets and hardware09401911- SKU:
- 09401911
- Availability:
- Ships Same Business Day
- Weight:
- 5.71 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- BLACK
- UNITS:
- PAIR
- COLOR/FINISH:
- ANODIZED
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- COVER
$699.95 -
ARLEN NESS Point Cover - Black 700-008
ARLEN NESS
$59.95A quality point cover does more than protect your ignition components—it completes your engine's aesthetic while safeguarding critical internals from contamination and debris. The ARLEN NESS Point Cover delivers a clean, finished look that matches...09401913- SKU:
- 09401913
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- COLOR/FINISH:
- MACHINED
- TYPE:
- POINTS
- MATERIAL:
- 6061 T-6 ALUMINUM
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- BLACK
- STYLE:
- 10 GAUGE
$59.95 -
ARLEN NESS Point Cover - Blue 700-011
ARLEN NESS
$69.95A quality point cover does more than protect your ignition system—it completes the aesthetic of your engine while safeguarding critical components from debris and moisture. The ARLEN NESS Point Cover delivers OEM-level durability with the custom chrome...09401914- SKU:
- 09401914
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- BLUE
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
$69.95 -
ARLEN NESS Point Cover - Gold 700-012
ARLEN NESS
$69.95A quality point cover protects your ignition system while adding visual refinement to your engine bay. The ARLEN NESS Gold Point Cover delivers durability and aesthetic appeal in one bolt-on component, making it an essential upgrade for riders who demand...09401915- SKU:
- 09401915
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- COLOR/FINISH:
- GOLD
- MATERIAL:
- 6061 T-6 ALUMINUM
- STYLE:
- 10 GAUGE
- PRODUCT NAME:
- COVER
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- ANODIZED
- TYPE:
- POINTS
- COLOR/FINISH:
- MACHINED
- UNITS:
- EACH
$69.95 -
ARLEN NESS Point Cover - Orange 700-013
ARLEN NESS
$69.95A quality point cover serves as both a protective barrier and a visual statement on your engine. The ARLEN NESS Point Cover delivers precision machining with OEM-level fit while elevating your bike's aesthetic with its distinctive orange finish and...09401916- SKU:
- 09401916
- Availability:
- Ships Same Business Day
- Weight:
- 0.21 LBS
- MATERIAL:
- 6061 T-6 ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- POINTS
- UNITS:
- EACH
- COLOR/FINISH:
- MACHINED
- STYLE:
- 10 GAUGE
- COLOR/FINISH:
- ANODIZED
- COLOR/FINISH:
- ORANGE
- PRODUCT NAME:
- COVER
$69.95 -
On Sale
EDDIE TROTTA DESIGNS Points Cover - Platinum - Black - M8 TC-566B
EDDIE TROTTA DESIGNS
MSRP: $138.00Now: $97.00Was: $138.00A quality points cover protects your ignition system from moisture and debris while delivering the visual impact your M8 deserves. Eddie Trotta's precision CNC-machined design combines functional durability with purposeful aesthetics—no compromises. This...09401728- SKU:
- 09401728
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- STYLE:
- PLATINUM CUT
- TYPE:
- POINT
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- COVER
- UNITS:
- EACH
- BASE COLOR:
- BLACK
MSRP: $138.00Now: $97.00Was: $138.00 -
GARDNER-WESTCOTT 5/16" - 1/8" NPT Fitting - Chrome 7-90HB-5X2
GARDNER-WESTCOTT
$6.95Reliable fluid transfer is critical in high-performance applications, and compromised fittings can mean catastrophic failure on the track or in the shop. The Gardner-Westcott 5/16" - 1/8" NPT Fitting delivers the precision engineering and robust...DS245272- SKU:
- DS245272
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- CONNECTOR ANGLE:
- STRAIGHT
- CONNECTION TYPE:
- 1/8' NPT (MALE)
- CONNECTION TYPE:
- 5/16' HOSE FITTING
- TYPE:
- OIL PUMP
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$6.95 -
GARDNER-WESTCOTT Hex Socket Plug - 1/8" NPT 7-107CSP-2
GARDNER-WESTCOTT
$5.95If you're building a custom fuel system, oil cooler setup, or any pressurized application, you need fittings you can trust. The GARDNER-WESTCOTT Hex Socket Plug seals 1/8" NPT ports with precision engineering and domestic quality—no leaks, no compromises...DS245276- SKU:
- DS245276
- Availability:
- Ships Same Business Day
- Weight:
- 0.02 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- CHROME
- CONNECTOR ANGLE:
- STRAIGHT
- CONNECTION TYPE:
- 1/8' NPT (MALE)
- TYPE:
- PLUG
$5.95 -
ANDREWS EV7 Cam - Big Twin 291170
ANDREWS
$251.95If you're running a big-inch stroker with head work, the ANDREWS EV7 Cam delivers the mid-range power and reliability you need without requiring expensive spring upgrades or extensive machine work. This hydraulic lifter cam maintains boost all the way to...DS199445- SKU:
- DS199445
- Availability:
- Ships Same Business Day
- Weight:
- 2.13 LBS
- APPLICATION:
- EXHAUST
- EXHAUST CLOSE IMPERIAL:
- 27°
- EXHAUST DURATION IMPERIAL:
- 266°
- EXHAUST OPEN IMPERIAL:
- 59°
- INTAKE DURATION IMPERIAL:
- 266°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.249'
- UNITS:
- EACH
- GRIND:
- EV7
- INTAKE CLOSE IMPERIAL:
- 55°
- EXHAUST LIFT IMPERIAL:
- 0.560'
- INTAKE LIFT IMPERIAL:
- 0.560'
- INTAKE OPEN IMPERIAL:
- 31°
- PRODUCT NAME:
- CAM
- APPLICATION:
- INTAKE
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.223'
- RIDING STYLE:
- STREET
$251.95 -
ANDREWS EV38 Grind Cam - Big Twin 291138
ANDREWS
$251.95If you're running a Big Twin and want reliable RPM capability without the headaches of valve float or expensive spring upgrades, the Andrews EV38 Grind Cam delivers the performance you need with stock components. This hydraulic lifter cam is engineered...DS199446- SKU:
- DS199446
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- APPLICATION:
- INTAKE
- EXHAUST DURATION IMPERIAL:
- 252°
- EXHAUST LIFT IMPERIAL:
- 0.500'
- EXHAUST OPEN IMPERIAL:
- 52°
- GRIND:
- EV38
- INTAKE CLOSE IMPERIAL:
- 37°
- INTAKE LIFT IMPERIAL:
- 0.495'
- TYPE:
- GEAR
- RIDING STYLE:
- STREET
- APPLICATION:
- EXHAUST
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.182'
- INTAKE OPEN IMPERIAL:
- 21°
- EXHAUST CLOSE IMPERIAL:
- 20°
- INTAKE DURATION IMPERIAL:
- 238°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.190'
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
$251.95 -
ANDREWS EV51 Cam - Big Twin 291151
ANDREWS
$251.95If you're running a modified Big Twin and want reliable power across the entire street-riding range without sacrificing reliability, the Andrews EV51 delivers consistent performance from 3000 rpm all the way to 6500 rpm. This hydraulic lifter cam handles...DS199447- SKU:
- DS199447
- Availability:
- Ships Same Business Day
- Weight:
- 2.05 LBS
- APPLICATION:
- EXHAUST
- APPLICATION:
- INTAKE
- EXHAUST LIFT IMPERIAL:
- 0.510'
- EXHAUST CLOSE IMPERIAL:
- 22°
- EXHAUST DURATION IMPERIAL:
- 256°
- INTAKE LIFT IMPERIAL:
- 0.510'
- INTAKE OPEN IMPERIAL:
- 28°
- RIDING STYLE:
- STREET
- INTAKE DURATION IMPERIAL:
- 252°
- INTAKE LIFT AT TDC IMPERIAL:
- 0.233'
- EXHAUST LOBE CENTERLINE IMPERIAL:
- 106°
- GRIND:
- EV51
- PRODUCT NAME:
- CAM
- UNITS:
- EACH
- EXHAUST LIFT AT TDC IMPERIAL:
- 0.195'
- EXHAUST OPEN IMPERIAL:
- 54°
- INTAKE CLOSE IMPERIAL:
- 44°
- INTAKE LOBE CENTERLINE IMPERIAL:
- 98°
- TYPE:
- CHAIN
$251.95 -
ANDREWS High-Lift Valve Springs 272110
ANDREWS
$67.95If you're running a performance cam in your big-twin, you need valve springs engineered to handle the increased lift and valve velocity. The ANDREWS 272110 High-Lift Valve Springs deliver the precise spring force required to keep your valvetrain stable...DS199736- SKU:
- DS199736
- Availability:
- Ships Same Business Day
- Weight:
- 2.13 LBS
- PRODUCT NAME:
- SPRING
- TYPE:
- VALVE
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$67.95 -
ANDREWS Medium-Lift Upper Spring Collar Set 276150
ANDREWS
$74.95If you're running a stock 74" or 80" big twin and want to unlock higher-lift cam profiles without tearing down your entire top end, the ANDREWS Medium-Lift Upper Spring Collar Set is your straightforward solution. This set adds approximately .060" of...DS199737- SKU:
- DS199737
- Availability:
- Ships Same Business Day
- Weight:
- 0.31 LBS
- PRODUCT NAME:
- UPPER SPRING COLLAR
- RIDING STYLE:
- STREET
- STYLE:
- MEDIUM-LIFT
- UNITS:
- 4 PACK
$74.95 -
ANDREWS Valve Spring Collars 273120
ANDREWS
$51.95If you're upgrading to a higher-lift camshaft on your big twin, stock valve spring collars will fight you every step of the way. ANDREWS Valve Spring Collars deliver the lower profile design you need for hassle-free installation while maintaining the...DS199738- SKU:
- DS199738
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- COLLAR
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- MATERIAL:
- STEEL
- STYLE:
- LOW-PROFILE
- TYPE:
- LOWER SPRING COLLAR
$51.95 -
ANDREWS High-Lift Springs 294150
ANDREWS
$65.95If you're pushing your engine's limits with aggressive cam profiles, your factory springs simply won't cut it. The ANDREWS High-Lift Springs 294150 are engineered to handle demanding valve lift specifications without compromising reliability or requiring...DS199739- SKU:
- DS199739
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- MATERIAL:
- STEEL
- PRODUCT NAME:
- SPRING KIT
- TYPE:
- VALVE
$65.95 -
ANDREWS Adjustable Pushrods - M8 292017
ANDREWS
$300.95Stock pushrods are a common bottleneck for Evolution engine performance tuning—they lack the adjustability needed to dial in proper valve clearances as you modify your engine's internals. The ANDREWS Adjustable Pushrods (M8 292017) eliminate guesswork by...09280095- SKU:
- 09280095
- Availability:
- Ships Same Business Day
- Weight:
- 0.96 LBS
- RIDING STYLE:
- STREET
- STYLE:
- ADJUSTABLE
- MATERIAL:
- CHROME MOLY
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUSHROD
$300.95
