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
Jims Valve Keepers 1984-2004 Harley-Davidson Softail Standard FXST 1370
JIMS
MSRP: $29.95Now: $26.96Was: $29.95Valve keepers are critical to preventing catastrophic valve float and spring failure under high RPM conditions. If you're running JIMS titanium valve spring retainers on your Big Twin, using matched valve keepers ensures the lock angle seats properly and...DS199555- SKU:
- DS199555
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- KEY
- RIDING STYLE:
- STREET
- TYPE:
- VALVE LOCK
- UNITS:
- 8 PACK
MSRP: $29.95Now: $26.96Was: $29.95Qty in Cart: 0Quantity:Price:MSRP: $29.95Now: $26.96Was: $29.95Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Oil Pump Bushing 24641-36 A-24641-36
EASTERN MOTORCYCLE PARTS
MSRP: $32.95Now: $29.98Was: $32.95A worn or damaged oil pump bushing compromises lubrication flow and can lead to catastrophic engine damage. This OEM-quality replacement restores proper oil circulation and pump engagement, ensuring reliable pressure delivery across all RPM ranges. Built...09320074- SKU:
- 09320074
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- PRODUCT NAME:
- DRIVE SHAFT
- RIDING STYLE:
- STREET
- TYPE:
- OIL PUMP
MSRP: $32.95Now: $29.98Was: $32.95 -
On Sale
EASTERN MOTORCYCLE PARTS Oil Pump Plunger - 26400-82 A-26400-82
EASTERN MOTORCYCLE PARTS
MSRP: $10.95Now: $9.96Was: $10.95A failing oil pump plunger compromises lubrication pressure across your entire engine, risking catastrophic bearing damage and performance loss. The EASTERN MOTORCYCLE PARTS Oil Pump Plunger (A-26400-82) restores consistent oil delivery and pressure...09320075- SKU:
- 09320075
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- TYPE:
- OIL PUMP
- TYPE:
- RELIEF
- PRODUCT NAME:
- PLUNGER
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $10.95Now: $9.96Was: $10.95 -
On Sale
EASTERN MOTORCYCLE PARTS Dowel Pins A-16574-99
EASTERN MOTORCYCLE PARTS
Now: $8.55Was: $9.40Precision dowel pins are critical fastening components in high-stress crankcase and transmission assemblies—misalignment or pin failure can compromise case integrity and power delivery. Eastern Motorcycle Parts A-16574-99 dowels provide the repeatability...09200067- SKU:
- 09200067
- Availability:
- Ships Same Business Day
- Weight:
- 0.26 LBS
- PRODUCT NAME:
- DOWEL PIN
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
Now: $8.55Was: $9.40 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9110
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical wear items that maintain proper wheel alignment and reduce friction in your motorcycle's bearing assembly. Over time, factory spacers compress and wear, leading to play in the wheel hub and compromised handling. This 5-pack...09200068- SKU:
- 09200068
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.0895' - 0.0905'
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9123
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical wear components that maintain proper axle alignment and reduce friction in your wheel bearings—neglecting them leads to premature bearing failure and costly rebuilds. The EASTERN MOTORCYCLE PARTS A-9123 5-pack delivers...09200072- SKU:
- 09200072
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- BEARING SPACER
- UNITS:
- 5 PACK
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.0975' - 0.0985'
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9125
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical components that maintain proper wheel alignment and reduce radial play in your motorcycle's wheel bearings. Worn or damaged spacers lead to premature bearing failure, wobbling wheels, and compromised handling—exactly what you...09200073- SKU:
- 09200073
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1015' - 0.1025'
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9126
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical components that maintain precise wheel alignment and reduce axial play in your motorcycle's wheel bearings. Worn or missing spacers lead to premature bearing wear, increased friction, and compromised handling—issues that...09200074- SKU:
- 09200074
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- UNITS:
- 5 PACK
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- BASE FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1035' - 0.1045'
- PRODUCT NAME:
- BEARING SPACER
Now: $13.47Was: $14.80Qty in Cart: 0Quantity:Price:Now: $13.47Was: $14.80Subtotal: -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9127
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical components that maintain precise axle alignment and wheel bearing preload—factors that directly impact handling, tire wear, and overall safety. Worn or incorrect spacers can introduce play in your wheel bearings, leading to...09200075- SKU:
- 09200075
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1055' - 0.1065'
- PRODUCT NAME:
- BEARING SPACER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9128
EASTERN MOTORCYCLE PARTS
Now: $14.11Was: $15.50Bearing spacers are critical for maintaining proper wheel alignment and suspension geometry—neglecting them leads to accelerated bearing wear, uneven tire degradation, and compromised handling. The EASTERN MOTORCYCLE PARTS A-9128 5-pack delivers...09200076- SKU:
- 09200076
- Availability:
- Ships Same Business Day
- Weight:
- 0.08 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1075' - 0.1085'
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $14.11Was: $15.50 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9129
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical for maintaining proper wheel alignment, reducing lateral play, and preventing premature bearing wear in high-stress riding conditions. Using OEM-quality replacements ensures your wheels track true and your bearings operate at...09200077- SKU:
- 09200077
- Availability:
- Ships Same Business Day
- Weight:
- 0.11 LBS
- PRODUCT NAME:
- BEARING SPACER
- UNITS:
- 5 PACK
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1095' - 0.1105'
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9130
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Worn or degraded bearing spacers compromise wheel alignment, increase drag, and accelerate bearing wear—ultimately compromising safety and performance. The EASTERN MOTORCYCLE PARTS Bearing Spacers (A-9130) restore proper bearing preload and axle geometry...09200078- SKU:
- 09200078
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1115' - 0.1125'
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9132
EASTERN MOTORCYCLE PARTS
Now: $14.11Was: $15.50Bearing spacers are critical for maintaining proper wheel alignment and reducing lateral play in your motorcycle's hub assembly. Without quality spacers, you'll experience accelerated bearing wear, wobbling wheels, and compromised handling—especially...09200080- SKU:
- 09200080
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1155' - 0.1165'
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
Now: $14.11Was: $15.50 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9133
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical wear items that maintain precise wheel alignment and reduce radial play in your motorcycle's wheel bearings. Worn or damaged spacers compromise handling predictability and accelerate bearing degradation, making replacement...09200081- SKU:
- 09200081
- Availability:
- Ships Same Business Day
- Weight:
- 0.09 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1175' - 0.1185'
- RIDING STYLE:
- STREET
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Bearing Spacers - 5 pack A-9134
EASTERN MOTORCYCLE PARTS
Now: $13.47Was: $14.80Bearing spacers are critical for maintaining proper wheel alignment and reducing side-to-side play in your wheel bearings—neglecting them leads to premature bearing wear and handling inconsistencies. These OEM-spec Eastern Motorcycle Parts spacers ensure...09200082- SKU:
- 09200082
- Availability:
- Ships Same Business Day
- Weight:
- 0.16 LBS
- COLOR/FINISH:
- CHROME
- DIAMETER - THREAD SIZE IMPERIAL:
- 0.1195' - 0.1205'
- BASE FINISH:
- CHROME
- PRODUCT NAME:
- BEARING SPACER
- RIDING STYLE:
- STREET
- TYPE:
- CRANKCASE
- UNITS:
- 5 PACK
Now: $13.47Was: $14.80 -
On Sale
EASTERN MOTORCYCLE PARTS Dowel Pins A-358
EASTERN MOTORCYCLE PARTS
Now: $7.28Was: $8.00Dowel pins are critical alignment components that maintain precise tolerances between mated surfaces in your engine or transmission assembly. Worn or damaged pins compromise structural integrity and can lead to misalignment, vibration, and catastrophic...09200088- SKU:
- 09200088
- Availability:
- Ships Same Business Day
- Weight:
- 0.07 LBS
- FEATURES:
- SIZE IS .251' X .496' L
- PRODUCT NAME:
- DOWEL PIN
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
Now: $7.28Was: $8.00 -
On Sale
EASTERN MOTORCYCLE PARTS Dowel Pins V13-205
EASTERN MOTORCYCLE PARTS
Now: $12.19Was: $13.40Dowel pins are critical alignment components that maintain precise positioning between engine block sections, cylinder heads, and transmission housings. Worn or missing dowel pins compromise structural integrity and can lead to misalignment, fluid leaks,...09200089- SKU:
- 09200089
- Availability:
- Ships Same Business Day
- Weight:
- 0.04 LBS
- RIDING STYLE:
- STREET
- FEATURES:
- SIZE IS .394' X .375' L
- PRODUCT NAME:
- DOWEL PIN
- UNITS:
- 10 PACK
Now: $12.19Was: $13.40 -
On Sale
EASTERN MOTORCYCLE PARTS Dowel Pins V-13-210
EASTERN MOTORCYCLE PARTS
Now: $15.93Was: $17.50Dowel pins are critical precision components that ensure proper alignment and indexing in engine assembly and structural applications. Using OEM-specification replacements like the Eastern Motorcycle Parts V-13-210 prevents misalignment, maintains...09200090- SKU:
- 09200090
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- FEATURES:
- SIZE IS .374' X .400' L
- PRODUCT NAME:
- DOWEL PIN
- UNITS:
- 10 PACK
- RIDING STYLE:
- STREET
Now: $15.93Was: $17.50 -
On Sale
EASTERN MOTORCYCLE PARTS Dowel Pins A-24754-75A
EASTERN MOTORCYCLE PARTS
Now: $20.84Was: $22.90Dowel pins are critical alignment components that keep your engine internals, transmission, and case assemblies precisely positioned during assembly and operation. Worn or missing dowel pins compromise structural integrity and can lead to catastrophic...09200123- SKU:
- 09200123
- Availability:
- Ships Same Business Day
- Weight:
- 0.06 LBS
- PRODUCT NAME:
- DOWEL PIN
- RIDING STYLE:
- STREET
- UNITS:
- 10 PACK
- FEATURES:
- SIZE IS .434' X .500' L
Now: $20.84Was: $22.90 -
On Sale
EASTERN MOTORCYCLE PARTS Piston Pin Retaining Ring A-22097-99
EASTERN MOTORCYCLE PARTS
Now: $3.64Was: $4.00Piston pin retaining rings are critical to engine reliability—a failed ring can lead to catastrophic internal damage and costly downtime. This Eastern Motorcycle Parts replacement ring meets or exceeds OEM specifications, ensuring your engine maintains...09130016- SKU:
- 09130016
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- RIDING STYLE:
- STREET
- TYPE:
- PIN
- UNITS:
- 10 PACK
- PRODUCT NAME:
- CLIP
Now: $3.64Was: $4.00
