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
-
On Sale
COMETIC Inner Rocker Box Rubber Gasket C9283
COMETIC
Now: $13.32Was: $14.80Proper rocker box sealing is critical to preventing oil leakage and maintaining consistent hydraulic pressure in your valve train. The COMETIC C9283 Inner Rocker Box Rubber Gasket delivers reliable,...09341348- SKU:
- 09341348
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- GASKET
- TYPE:
- ROCKER COVER
- MATERIAL:
- VITON
- MOUNTING POSITION:
- INNER
- UNITS:
- 5 PACK
- RIDING STYLE:
- STREET
Now: $13.32Was: $14.80 -
On Sale
COMETIC Complete Gasket Kit - FLT C9172
COMETIC
MSRP: $287.65Now: $258.89Was: $287.65A complete gasket kit eliminates the guesswork of sourcing individual sealing components for your engine build or rebuild. Cometic's C9172 delivers OEM-quality or better materials for each gasket...09341220- SKU:
- 09341220
- Availability:
- Ships Same Business Day
- Weight:
- 2.00 LBS
- MATERIAL:
- STEEL
- TYPE:
- COMPLETE
- BORE SIZE:
- 3,750'
- MATERIAL:
- AFM (ALUMINUM FOAM MATERIAL)
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- BORE SIZE IMPERIAL:
- 3.750'
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
MSRP: $287.65Now: $258.89Was: $287.65 -
On Sale
COMETIC Rocker Box Gasket Kit - Screamin' Eagle C9167
COMETIC
MSRP: $56.65Now: $50.99Was: $56.65Engine oil seepage around rocker boxes compromises performance and creates maintenance headaches. The COMETIC Rocker Box Gasket Kit C9167 is engineered with premium materials to eliminate leaks and...09341217- SKU:
- 09341217
- Availability:
- Ships Same Business Day
- Weight:
- 0.49 LBS
- RIDING STYLE:
- STREET
- TYPE:
- ROCKER BOX
- PRODUCT NAME:
- GASKET KIT
- UNITS:
- KIT
- MATERIAL:
- STEEL
- MODEL:
- EST
- FEATURES:
- FOR SCREAMIN' EAGLE ROCKER BOXES
MSRP: $56.65Now: $50.99Was: $56.65Qty in Cart: 0Quantity:Price:MSRP: $56.65Now: $50.99Was: $56.65Subtotal: -
On Sale
COMETIC Head Gasket - .060"- MLS Standard C9158
COMETIC
MSRP: $90.25Now: $81.23Was: $90.25A worn or incorrect head gasket is one of the fastest ways to lose compression, leak coolant, and compromise engine reliability. The COMETIC C9158 .060" MLS gasket uses multi-layer steel construction...09341214- SKU:
- 09341214
- Availability:
- Ships Same Business Day
- Weight:
- 0.37 LBS
- BORE SIZE:
- 3,750'
- DISPLACEMENT:
- 96'
- MATERIAL:
- LAYERED STEEL
- THICKNESS:
- 1,52 MM (0,060')
- TYPE:
- CYLINDER HEAD
- PRODUCT NAME:
- GASKET
- THICKNESS IMPERIAL:
- 0.060'
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 3.750'
- THICKNESS METRIC:
- 1.52 MM
- MATERIAL:
- VITON
- RIDING STYLE:
- STREET
MSRP: $90.25Now: $81.23Was: $90.25Qty in Cart: 0Quantity:Price:MSRP: $90.25Now: $81.23Was: $90.25Subtotal: -
On Sale
COMETIC Top End Gasket - Standard - XB C9856
COMETIC
MSRP: $142.75Now: $128.48Was: $142.75A failing top end gasket will cost you far more than prevention—blown seals lead to compression loss, coolant leaks, and catastrophic engine damage. The COMETIC EST gasket kit delivers precision...09340817- SKU:
- 09340817
- Availability:
- Ships Same Business Day
- Weight:
- 0.79 LBS
- BORE SIZE IMPERIAL:
- 3.500'
- MATERIAL:
- RUBBER
- UNITS:
- KIT
- MATERIAL:
- STAINLESS STEEL
- TYPE:
- TOP END
- RIDING STYLE:
- STREET
- BORE SIZE:
- 3,500'
- ENGINE TYPE:
- 4-STROKE
- PRODUCT NAME:
- GASKET KIT
MSRP: $142.75Now: $128.48Was: $142.75Qty in Cart: 0Quantity:Price:MSRP: $142.75Now: $128.48Was: $142.75Subtotal: -
On Sale
COMETIC Base Gasket - 3-5/8" C9988
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A head gasket failure can cost you an entire engine—and a race. The COMETIC Base Gasket C9988 uses Multi-Layer Steel (MLS) construction with Load Control Embossments to distribute clamping force...09340783- SKU:
- 09340783
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 3.625'
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- TYPE:
- CYLINDER BASE
- THICKNESS IMPERIAL:
- 0,020'
- THICKNESS METRIC:
- 0.51 MM
MSRP: $33.55Now: $30.20Was: $33.55 -
On Sale
COMETIC Base Gasket - XL 3-5/8" C9554
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A head gasket failure can sideline your engine and drain your wallet fast. The COMETIC Base Gasket C9554 uses advanced MLS (Multi-Layer Steel) construction with Load Control Embossments to distribute...09340782- SKU:
- 09340782
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- BORE SIZE IMPERIAL:
- 3.625'
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- MATERIAL:
- STEEL
- MATERIAL:
- VITON
- THICKNESS METRIC:
- 0.25 MM
- RIDING STYLE:
- STREET
- STYLE:
- BIG BORE
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
MSRP: $33.55Now: $30.20Was: $33.55Qty in Cart: 0Quantity:Price:MSRP: $33.55Now: $30.20Was: $33.55Subtotal: -
On Sale
COMETIC Base Gasket - Standard C9987
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A properly sealed combustion chamber is non-negotiable for consistent power delivery and engine longevity. The COMETIC Base Gasket C9987 uses multi-layer steel construction with load-control...09340781- SKU:
- 09340781
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS IMPERIAL:
- 0,020'
- BORE SIZE IMPERIAL:
- 3.500'
- MATERIAL:
- RUBBER
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.51 MM
MSRP: $33.55Now: $30.20Was: $33.55 -
On Sale
COMETIC Base Gasket - 4.125" - .020" C9739
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A quality head gasket is the foundation of any reliable engine build—it's what keeps combustion sealed and cylinder pressures contained. The COMETIC Base Gasket delivers MLS (Multi-Layer Steel)...09340779- SKU:
- 09340779
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- THICKNESS:
- 0,51 MM (0,020')
- THICKNESS IMPERIAL:
- 0,020'
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.51 MM
MSRP: $33.55Now: $30.20Was: $33.55 -
On Sale
COMETIC Base Gasket - 4-1/8" Twin Cam - .010" C9938
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A head gasket failure can cost you race time and engine damage. The COMETIC Base Gasket delivers reliable sealing across extreme load conditions, ensuring your Twin Cam engine maintains compression...09340778- SKU:
- 09340778
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- THICKNESS METRIC:
- 0.25 MM
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- PRODUCT NAME:
- GASKET
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- MATERIAL:
- STEEL
MSRP: $33.55Now: $30.20Was: $33.55 -
On Sale
COMETIC Base Gasket - 4" - .010" C9937
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A head gasket failure can sideline your engine and drain your wallet. The COMETIC Base Gasket delivers reliable sealing across demanding racing conditions, high-boost applications, and variable...09340777- SKU:
- 09340777
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- RIDING STYLE:
- STREET
- THICKNESS METRIC:
- 0.25 MM
- PRODUCT NAME:
- GASKET
- UNITS:
- PAIR
- BORE SIZE IMPERIAL:
- 4.000'
- STYLE:
- STANDARD
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- STEEL
- TYPE:
- CYLINDER BASE
MSRP: $33.55Now: $30.20Was: $33.55Qty in Cart: 0Quantity:Price:MSRP: $33.55Now: $30.20Was: $33.55Subtotal: -
On Sale
COMETIC Base Gasket - Evo - .010" C9101
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A quality head gasket is non-negotiable if you're chasing reliable power and ring seal integrity on your Evo platform. The COMETIC Base Gasket delivers proven MLS construction with Load Control...09340773- SKU:
- 09340773
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- RIDING STYLE:
- STREET
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.25 MM
- TYPE:
- CYLINDER BASE
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
- UNITS:
- PAIR
MSRP: $33.55Now: $30.20Was: $33.55Qty in Cart: 0Quantity:Price:MSRP: $33.55Now: $30.20Was: $33.55Subtotal: -
On Sale
COMETIC Base Gasket - .010" - XL C9100
COMETIC
MSRP: $33.55Now: $30.20Was: $33.55A properly sealed combustion chamber is non-negotiable for consistent power output and engine reliability. The COMETIC Base Gasket delivers precision multi-layer steel construction with strategically...09340772- SKU:
- 09340772
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- THICKNESS:
- 0,25 MM (0,010')
- THICKNESS IMPERIAL:
- 0,010'
- MATERIAL:
- RUBBER
- MATERIAL:
- STEEL
- THICKNESS METRIC:
- 0.25 MM
- TYPE:
- CYLINDER BASE
- UNITS:
- PAIR
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- GASKET
- STYLE:
- STANDARD
MSRP: $33.55Now: $30.20Was: $33.55Qty in Cart: 0Quantity:Price:MSRP: $33.55Now: $30.20Was: $33.55Subtotal: -
CUSTOM CYCLE ENGINEERING Front Motor Mount - Dyna DMM 2014-1L
CUSTOM CYCLE ENGINEERING
$543.95Stock motor mounts on your Dyna are engineered for comfort, not performance—they allow excessive engine movement that kills throttle response and creates unwanted vibration through the chassis. The...09330124- SKU:
- 09330124
- Availability:
- Ships Same Business Day
- Weight:
- 3.51 LBS
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- MOUNT
- MOUNTING POSITION:
- FRONT
- UNITS:
- EACH
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
$543.95 -
CUSTOM CYCLE ENGINEERING Top Stabilizer Link - Dyna TSL2014-1
CUSTOM CYCLE ENGINEERING
$354.95Engine vibration at high speeds doesn't just feel rough—it accelerates wear on motor mounts, transmission linkage, and chassis components. The CUSTOM CYCLE ENGINEERING Top Stabilizer Link replaces...09330112- SKU:
- 09330112
- Availability:
- Ships Same Business Day
- Weight:
- 1.25 LBS
- MOUNTING POSITION:
- TOP
- RIDING STYLE:
- STREET
- TYPE:
- ENGINE
- COLOR/FINISH:
- BLACK
- UNITS:
- KIT
- PRODUCT NAME:
- STABILIZER
$354.95Qty in Cart: 0Quantity:Price:$354.95Subtotal: -
FEULING OIL PUMP CORP. HP+‚® Pushrods 4082
FEULING OIL PUMP CORP.
$179.95If you're running a 4-valve Harley engine, adjustable pushrods might seem convenient—but they're compromising your valvetrain stability and peak performance. Feuling's HP+ one-piece pushrods...09280118- SKU:
- 09280118
- Availability:
- Ships Same Business Day
- Weight:
- 1.75 LBS
- RIDING STYLE:
- STREET
- STYLE:
- FIXED LENGTH
- UNITS:
- 4 PACK
- PRODUCT NAME:
- PUSHROD
$179.95 -
FEULING OIL PUMP CORP. HP+‚® Pushrods - Twin Cam 4076
FEULING OIL PUMP CORP.
$179.95The Twin Cam 4076 engine's inherent valve train instability demands pushrods that maintain precise geometry under load—adjustable units introduce flex and harmonics that compromise lift and...09280117- SKU:
- 09280117
- Availability:
- Ships Same Business Day
- Weight:
- 1.65 LBS
- STYLE:
- FIXED LENGTH
- PRODUCT NAME:
- PUSHROD
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
$179.95 -
FEULING OIL PUMP CORP. HP+‚® Pushrods - -0.040" - M8 4086
FEULING OIL PUMP CORP.
$179.95If you're running a higher-lift cam on your Harley Davidson XL engine, stock pushrods will eventually fail you—they flex under load, robbing you of valve-train stability and leaving RPM and torque on...09280113- SKU:
- 09280113
- Availability:
- Ships Same Business Day
- Weight:
- 1.71 LBS
- MATERIAL:
- 4130 STEEL
- MATERIAL:
- CHROME MOLY
- RIDING STYLE:
- STREET
- STYLE:
- FIXED LENGTH
- DIAMETER IMPERIAL:
- 0.4375'
- MODEL:
- HP+®
- PRODUCT NAME:
- PUSHROD SET
- UNITS:
- SET OF 4
- WALL THICKNESS:
- 0,165'
- WALL THICKNESS IMPERIAL:
- 0.165'
- LENGTH:
- -0.040'
$179.95Qty in Cart: 0Quantity:Price:$179.95Subtotal: -
On Sale
ARLEN NESS Pushrod Tubes - Titanium 03-635
ARLEN NESS
MSRP: $229.95Now: $206.96Was: $229.95Adjustable pushrods demand reliable, precision-engineered tubes that won't compromise valve train geometry or durability. The ARLEN NESS Titanium Pushrod Tubes deliver exactly that—lower tubes...09280112- SKU:
- 09280112
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- BASE COLOR:
- BLACK
- BASE FINISH:
- ANODIZED
- MODEL:
- 10 GAUGE
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD
- UNITS:
- SET OF 4
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- TUBE KIT
MSRP: $229.95Now: $206.96Was: $229.95Qty in Cart: 0Quantity:Price:MSRP: $229.95Now: $206.96Was: $229.95Subtotal: -
On Sale
ARLEN NESS 10 Gauge Pushrod Cover - Black 03-633
ARLEN NESS
MSRP: $229.95Now: $206.96Was: $229.95Arlen Ness pushrod covers deliver the precision engineering and clean aesthetics that separate dialed-in builds from the rest. Machined from 6061 T-6 billet aluminum, these covers provide robust...09280048- SKU:
- 09280048
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- MODEL:
- 10 GAUGE
- BASE COLOR:
- BLACK
- BASE FINISH:
- GLOSS
- MATERIAL:
- 6061-T6 ALUMINUM
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD
- UNITS:
- SET OF 4
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- TUBE KIT
MSRP: $229.95Now: $206.96Was: $229.95Qty in Cart: 0Quantity:Price:MSRP: $229.95Now: $206.96Was: $229.95Subtotal:
