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Harley Miscellaneous Engine Parts

Harley Miscellaneous Engine Parts

Harley Miscellaneous Engine Parts

Harley Bike Miscellaneous Engine Parts at JJ Motorsports

Complete your Harley's engine rebuild with premium miscellaneous parts from JJ Motorsports, featuring chrome fittings, sprocket spacers, and oil screens for reliable lubrication and precise assembly on Big Twin, Evo, Shovelhead, and Panhead models. These high-quality components ensure leak-free operation and long-term durability.

Shop Gardner Westcott and Eastern Motorcycle Parts engine parts for OEM-spec reliability. Explore related categories such as Harley engine for cams and gaskets, or Harley for exhaust and drivetrain to finish your build.

Top Harley Miscellaneous Engine Parts

Browse our in-stock inventory below with same-day shipping and expert support. Free shipping on orders over $99! Questions? Contact us for fitment advice!

  • Product
  • Qty in Cart
  • Quantity
  • Price
  • Subtotal
  • DRAG SPECIALTIES Rocker Cover Chrome - Evo/Big Twin 33-0082A-BXLB2

    DRAG SPECIALTIES Rocker Cover Chrome - Evo/Big Twin 33-0082A-BXLB2

    DRAG SPECIALTIES

    $351.87
    A 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 replaces worn or damaged originals with...
    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
    Qty in Cart: 0
    Quantity:
    Price:
    $351.87
    Subtotal:
  • DRAG SPECIALTIES Rocker Cover Top - Chrome - Big Twin 33-0082AGCBXLB2

    DRAG SPECIALTIES Rocker Cover Top - Chrome - Big Twin 33-0082AGCBXLB2

    DRAG SPECIALTIES

    $117.61
    A 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 dimensions and precision manufacturing to restore a bone-dry...
    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
    Qty in Cart: 0
    Quantity:
    Price:
    $117.61
    Subtotal:
  • On Sale
    S&S CYCLE Cam Drive Gear - Twin Cam/M8 330-0621

    S&S CYCLE Cam Drive Gear - Twin Cam/M8 330-0621

    S&S CYCLE

    MSRP: $252.95
    Now: $227.66
    Was: $252.95
    If you're running gear-driven cams on your Twin Cam or M8 Harley, you need a reliable cam drive gear set that delivers precise timing and durability. This S&S Cycle two-gear set provides the outer cam drive gear and pinion gear necessary to complete your...
    09500866
    SKU:
    09500866
    Availability:
    Ships Same Business Day
    Weight:
    1.25 LBS
    RIDING STYLE:
    STREET
    UNITS:
    KIT
    TYPE:
    OUTER
    PRODUCT NAME:
    GEAR KIT
    TYPE:
    CAM
    MSRP: $252.95
    Now: $227.66
    Was: $252.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $252.95
    Now: $227.66
    Was: $252.95
    Subtotal:
  • On Sale
    S&S CYCLE Intake Stock Manifold O-Ring 16-0236

    S&S CYCLE Intake Stock Manifold O-Ring 16-0236

    S&S CYCLE

    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    A worn or degraded intake manifold O-ring compromises your engine's ability to maintain proper fuel-air mixture and can lead to vacuum leaks that rob horsepower and create rough idle conditions. The S&S Cycle stock replacement O-ring restores a...
    10030457
    SKU:
    10030457
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    TYPE:
    INTAKE MANIFOLD
    PRODUCT NAME:
    O-RING
    RIDING STYLE:
    STREET
    MODEL:
    STOCK
    UNITS:
    EACH
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $10.95
    Now: $9.86
    Was: $10.95
    Subtotal:
  • PAUGHCO Right Tool Box Mount - Softail 403C2

    PAUGHCO Right Tool Box Mount - Softail 403C2

    PAUGHCO

    $69.95
    Proper footpeg clearance is essential when running a right-side toolbox on your Softail—cramped foot positioning compromises control and comfort during extended rides. This PAUGHCO mount solves that problem with a precision spacer and extended bolt...
    DS273664
    SKU:
    DS273664
    Availability:
    Ships Same Business Day
    Weight:
    1.38 LBS
    RIDING STYLE:
    STREET
    TYPE:
    TOOLBOX
    COLOR/FINISH:
    CHROME
    MOUNTING POSITION:
    RIGHT
    UNITS:
    KIT
    PRODUCT NAME:
    MOUNTING KIT
    BASE FINISH:
    CHROME
    Qty in Cart: 0
    Quantity:
    Price:
    $69.95
    Subtotal:
  • GARDNER-WESTCOTT 3/8" - NPT Plug 7-107CSP-6

    GARDNER-WESTCOTT 3/8" - NPT Plug 7-107CSP-6

    GARDNER-WESTCOTT

    $7.95
    A quality NPT plug is essential for sealing off unused ports on your fuel system, cooling lines, or pneumatic components—preventing leaks, contamination, and system failures. Gardner-Westcott's chrome-plated design resists corrosion while delivering...
    DS245261
    SKU:
    DS245261
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    CHROME
    CONNECTION TYPE:
    3/8' NPT (MALE)
    CONNECTOR ANGLE:
    STRAIGHT
    PRODUCT NAME:
    FITTING
    TYPE:
    PLUG
    UNITS:
    EACH
    $7.95
    Qty in Cart: 0
    Quantity:
    Price:
    $7.95
    Subtotal:
  • GARDNER-WESTCOTT Breather Fitting - 1/4" NPT x 3/8" Hose 7-90TD-6X4

    GARDNER-WESTCOTT Breather Fitting - 1/4" NPT x 3/8" Hose 7-90TD-6X4

    GARDNER-WESTCOTT

    $7.95
    Proper crankcase ventilation is essential for engine longevity and reliability, especially in high-performance applications where pressure buildup can compromise seals and gaskets. The GARDNER-WESTCOTT Breather Fitting provides a straightforward, direct...
    DS245263
    SKU:
    DS245263
    Availability:
    Ships Same Business Day
    Weight:
    0.02 LBS
    PRODUCT NAME:
    FITTING
    RIDING STYLE:
    STREET
    COLOR/FINISH:
    CHROME
    UNITS:
    EACH
    TYPE:
    BREATHER
    BASE FINISH:
    CHROME
    BASE FINISH:
    POLISHED
    COLOR/FINISH:
    POLISHED
    CONNECTION TYPE:
    1/4' NPT (MALE)
    CONNECTION TYPE:
    3/8' HOSE FITTING
    CONNECTOR ANGLE:
    STRAIGHT
    $7.95
    Qty in Cart: 0
    Quantity:
    Price:
    $7.95
    Subtotal:
  • ALLOY ART Compression Release Adapter - 12 mm x 3/4" CRA-3

    ALLOY ART Compression Release Adapter - 12 mm x 3/4" CRA-3

    ALLOY ART

    $20.95
    If you're running a twin plug head but only need single spark plug ignition, this adapter eliminates unnecessary complexity without removing your hardware. The ALLOY ART Compression Release Adapter provides a clean, permanent solution for blocking off...
    09500082
    SKU:
    09500082
    Availability:
    Ships Same Business Day
    Weight:
    0.19 LBS
    PRODUCT NAME:
    ADAPTER
    TYPE:
    COMPRESSION RELEASE
    UNITS:
    EACH
    CONNECTOR ANGLE:
    STRAIGHT
    RIDING STYLE:
    STREET
    SIZE:
    12 MM - 3/4'
    Qty in Cart: 0
    Quantity:
    Price:
    $20.95
    Subtotal:
  • GARDNER-WESTCOTT 1/8" NPT Inverted Flare - Female - Zinc 7-W250-3X2

    GARDNER-WESTCOTT 1/8" NPT Inverted Flare - Female - Zinc 7-W250-3X2

    GARDNER-WESTCOTT

    $13.95
    Reliable hydraulic and pneumatic connections demand fittings you can trust under pressure. This Gardner-Westcott inverted flare fitting delivers leak-free performance with precision engineering and domestic manufacturing. Built to withstand demanding...
    DS245278
    SKU:
    DS245278
    Availability:
    Ships Same Business Day
    Weight:
    0.05 LBS
    CONNECTOR ANGLE:
    STRAIGHT
    PRODUCT NAME:
    FITTING
    COLOR/FINISH:
    CHROME
    CONNECTION TYPE:
    3/8' HOSE FITTING
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    CONNECTION TYPE:
    1/8' NPT (MALE)
    TYPE:
    OIL TANK
    Qty in Cart: 0
    Quantity:
    Price:
    $13.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Lock Tab Washer A-33362-52

    EASTERN MOTORCYCLE PARTS Lock Tab Washer A-33362-52

    EASTERN MOTORCYCLE PARTS

    Now: $9.65
    Was: $10.60
    Transmission work demands precision hardware—overlooking lock tab washers during rebuild or service is a guaranteed path to fastener failure and catastrophic drivetrain damage. The Eastern Motorcycle Parts Lock Tab Washer A-33362-52 is engineered to...
    09500411
    SKU:
    09500411
    Availability:
    Ships Same Business Day
    Weight:
    0.14 LBS
    PRODUCT NAME:
    WASHER
    TYPE:
    LOCK TAB
    UNITS:
    10 PACK
    RIDING STYLE:
    STREET
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $9.65
    Was: $10.60
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9263-12

    EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9263-12

    EASTERN MOTORCYCLE PARTS

    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Crankcase roller bearings are critical to engine longevity, reducing friction between rotating components and preventing catastrophic bearing failure under sustained load. Eastern Motorcycle Parts' A-9263-12 delivers precision engineering with domestic...
    09500533
    SKU:
    09500533
    Availability:
    Ships Same Business Day
    Weight:
    0.15 LBS
    RIDING STYLE:
    STREET
    SIZE:
    OVERSIZE (+0,0004')
    TYPE:
    ROLLER
    UNITS:
    12 PACK
    PRODUCT NAME:
    BEARING
    SIZE IMPERIAL:
    OVERSIZE (+0.0004')
    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Oil Line O-6-084

    EASTERN MOTORCYCLE PARTS Oil Line O-6-084

    EASTERN MOTORCYCLE PARTS

    MSRP: $75.95
    Now: $69.11
    Was: $75.95
    Reliable oil line routing is critical to maintaining proper lubrication pressure and preventing system degradation in high-performance applications. The EASTERN MOTORCYCLE PARTS Oil Line O-6-084 delivers dependable flow management with...
    09500538
    SKU:
    09500538
    Availability:
    Ships Same Business Day
    Weight:
    0.35 LBS
    MATERIAL:
    STEEL
    BASE FINISH:
    CHROME
    COLOR/FINISH:
    CHROME
    RIDING STYLE:
    STREET
    STYLE:
    FEED LINE
    TYPE:
    OIL
    PRODUCT NAME:
    LINE KIT
    UNITS:
    EACH
    MSRP: $75.95
    Now: $69.11
    Was: $75.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $75.95
    Now: $69.11
    Was: $75.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer Softail A-24039-01A EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer Softail A-24039-01A

    EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer Softail A-24039-01A

    EASTERN MOTORCYCLE PARTS

    MSRP: $45.95
    Now: $41.81
    Was: $45.95
    A worn or damaged sprocket shaft spacer compromises chain alignment and accelerates wear on your drivetrain components. This Eastern Motorcycle Parts spacer ensures precise spacing and concentricity, maintaining optimal chain tension and extending the...
    09500229
    SKU:
    09500229
    Availability:
    Ships Same Business Day
    Weight:
    0.30 LBS
    PRODUCT NAME:
    SHAFT SPACER
    RIDING STYLE:
    STREET
    UNITS:
    EACH
    TYPE:
    SPROCKET
    MSRP: $45.95
    Now: $41.81
    Was: $45.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $45.95
    Now: $41.81
    Was: $45.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9265-12 EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9265-12

    EASTERN MOTORCYCLE PARTS Crankcase Roller Bearings A-9265-12

    EASTERN MOTORCYCLE PARTS

    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Crankcase roller bearings are critical to maintaining precise crankshaft alignment and minimizing rotational friction in your engine. A worn or damaged bearing directly impacts power delivery, increases parasitic losses, and can lead to catastrophic...
    09500331
    SKU:
    09500331
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    SIZE:
    OVERSIZE (+0,0008')
    SIZE IMPERIAL:
    OVERSIZE (+0.0008')
    RIDING STYLE:
    STREET
    TYPE:
    ROLLER
    UNITS:
    12 PACK
    PRODUCT NAME:
    BEARING
    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $14.95
    Now: $13.60
    Was: $14.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Right Case Bushing A-24599-40

    EASTERN MOTORCYCLE PARTS Right Case Bushing A-24599-40

    EASTERN MOTORCYCLE PARTS

    MSRP: $124.95
    Now: $113.70
    Was: $124.95
    A worn or damaged case bushing compromises your motorcycle's structural integrity and can lead to misalignment issues that affect engine performance and longevity. This OEM-specification Eastern Motorcycle Parts bushing restores proper fit and clearance...
    09500335
    SKU:
    09500335
    Availability:
    Ships Same Business Day
    Weight:
    0.40 LBS
    PRODUCT NAME:
    BUSHING
    RIDING STYLE:
    STREET
    TYPE:
    CRANKCASE
    SIZE:
    STANDARD
    MOUNTING POSITION:
    RIGHT
    SIZE IMPERIAL:
    STANDARD
    UNITS:
    EACH
    MSRP: $124.95
    Now: $113.70
    Was: $124.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $124.95
    Now: $113.70
    Was: $124.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Right Bearing Washer A-24692-58

    EASTERN MOTORCYCLE PARTS Right Bearing Washer A-24692-58

    EASTERN MOTORCYCLE PARTS

    Now: $12.19
    Was: $13.40
    Bearing washers are critical wear components that maintain proper axle endplay and protect bearing races from lateral forces. This OEM-spec washer ensures your motorcycle's wheel bearings seat correctly, preventing premature wear and potential bearing...
    09500363
    SKU:
    09500363
    Availability:
    Ships Same Business Day
    Weight:
    0.12 LBS
    MOUNTING POSITION:
    RIGHT
    TYPE:
    CRANKCASE BEARING
    UNITS:
    5 PACK
    PRODUCT NAME:
    WASHER
    RIDING STYLE:
    STREET
    Now: $12.19
    Was: $13.40
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $12.19
    Was: $13.40
    Subtotal:
  • On Sale
    Jims Forceflow Cylinder Head Cooler Mount for 2013 Harley-Davidson FLHTCUSE8 5457

    Jims Forceflow Cylinder Head Cooler Mount for 2013 Harley-Davidson FLHTCUSE8 5457

    JIMS

    MSRP: $62.55
    Now: $56.30
    Was: $62.55
    Sustained high-performance riding demands reliable engine cooling, and the JIMS Forceflow Cylinder Head Cooler Mount delivers precision airflow management for your 110" motor. This bolt-on mount integrates seamlessly into your cooling system, reducing...
    09500605
    SKU:
    09500605
    Availability:
    Ships Same Business Day
    Weight:
    0.11 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    MOUNT
    TYPE:
    CYLINDER HEAD COOLER
    UNITS:
    EACH
    COLOR/FINISH:
    CHROME
    PRODUCT NAME:
    ADAPTER
    MSRP: $62.55
    Now: $56.30
    Was: $62.55
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $62.55
    Now: $56.30
    Was: $62.55
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Balance Shaft Spacer Kit 40-0145

    EASTERN MOTORCYCLE PARTS Balance Shaft Spacer Kit 40-0145

    EASTERN MOTORCYCLE PARTS

    MSRP: $31.95
    Now: $29.07
    Was: $31.95
    Proper balance shaft alignment is critical for minimizing vibration, extending engine life, and maintaining optimal performance across your entire drivetrain. This spacer kit gives you precision control over balance shaft positioning, eliminating...
    09500356
    SKU:
    09500356
    Availability:
    Ships Same Business Day
    Weight:
    0.25 LBS
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    SPACER KIT
    TYPE:
    BALANCE SHAFT
    UNITS:
    KIT
    MSRP: $31.95
    Now: $29.07
    Was: $31.95
    Qty in Cart: 0
    Quantity:
    Price:
    MSRP: $31.95
    Now: $29.07
    Was: $31.95
    Subtotal:
  • On Sale
    EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer A-24029-55

    EASTERN MOTORCYCLE PARTS Sprocket Shaft Spacer A-24029-55

    EASTERN MOTORCYCLE PARTS

    Now: $34.40
    Was: $37.80
    Precision sprocket alignment is critical to drivetrain efficiency and chain longevity. A worn or misaligned sprocket shaft spacer introduces runout that accelerates chain wear, increases noise, and compromises power delivery. The EASTERN MOTORCYCLE PARTS...
    09500359
    SKU:
    09500359
    Availability:
    Ships Same Business Day
    Weight:
    0.20 LBS
    TYPE:
    SPROCKET
    RIDING STYLE:
    STREET
    UNITS:
    5 PACK
    PRODUCT NAME:
    SPACER
    Now: $34.40
    Was: $37.80
    Qty in Cart: 0
    Quantity:
    Price:
    Now: $34.40
    Was: $37.80
    Subtotal:
  • GARDNER-WESTCOTT Rocker Box Bolt Kit - 80" C-80-115Y

    GARDNER-WESTCOTT Rocker Box Bolt Kit - 80" C-80-115Y

    GARDNER-WESTCOTT

    $56.95
    Installing rocker boxes requires precision fastening—using an incomplete or mismatched bolt kit compromises valve train integrity and can lead to catastrophic engine failure. The GARDNER-WESTCOTT Rocker Box Bolt Kit eliminates guesswork by providing...
    DS190307
    SKU:
    DS190307
    Availability:
    Ships Same Business Day
    Weight:
    1.06 LBS
    UNITS:
    KIT
    RIDING STYLE:
    STREET
    PRODUCT NAME:
    MOUNTING KIT
    TYPE:
    ROCKER BOX
    Qty in Cart: 0
    Quantity:
    Price:
    $56.95
    Subtotal:
  • Total: items /

Adding your products to cart

Big Power, Nice Sound!

Picked up a Pro Circuit pipe and silencer for my YZ125 it’s a game changer. The power feels way better and the sound is awesome.

Tyler D. - 06/12

Perfect Fit

First time ordering here and dang y’all knocked it outta the park! The wheels fit my Ranger UTV perfect, and I’ll definitely be back for more 5 stars all day!

Sarah L. - 08/24

Fast Shipping!!

Ordered on a Monday, and it was on my doorstep by Wednesday! Super impressed with how fast the shipping was.

Jason P. - 09/13

Helps keep cool, works great!

Bought the dual pass Allstar radiator for my build, and it’s been solid. Keeps the engine running cool even on the hottest days no complaints here!

Jake M. - 05/21

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