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 Side Mount Oil Cooler Kit - Black - Dyna SMD-1G
ULTRACOOL
$589.99Excessive oil temperatures rob your engine of reliability and performance—especially during sustained high-RPM riding or track days. The ULTRACOOL Side Mount Oil Cooler Kit maintains optimal oil viscosity and heat management through a purpose-built...07130162- SKU:
- 07130162
- Availability:
- Ships Same Business Day
- Weight:
- 7.66 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COLOR/FINISH:
- GLOSS BLACK
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- BASE COLOR:
- BLACK
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Chrome - Softail SMS-1C
ULTRACOOL
$589.99High oil temperatures are the silent killer of engine longevity and performance—especially in demanding riding conditions. The ULTRACOOL Side Mount Oil Cooler Kit automatically manages thermal load by engaging dual fans at 210°F, keeping your Softail's...07130163- SKU:
- 07130163
- Availability:
- Ships Same Business Day
- Weight:
- 7.46 LBS
- BASE FINISH:
- NATURAL
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- DOWN TUBE
- RIDING STYLE:
- STREET
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Gloss Black - Softail SMS-1G
ULTRACOOL
$589.99Harley Softail riders know that sustained high-performance riding generates heat that standard cooling systems simply can't manage. The ULTRACOOL Side Mount Oil Cooler Kit keeps your oil within the optimal operating window, protecting engine longevity...07130164- SKU:
- 07130164
- Availability:
- Ships Same Business Day
- Weight:
- 7.50 LBS
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- OIL COOLER
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Chrome - Sportster SMSP-2C
ULTRACOOL
$589.99Oil temperature is one of the most critical factors in engine longevity and performance—especially under sustained racing conditions or hot-weather riding. The ULTRACOOL Side Mount Oil Cooler Kit automatically manages thermal load by activating dual fans...07130165- SKU:
- 07130165
- Availability:
- Ships Same Business Day
- Weight:
- 6.50 LBS
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- RIDING STYLE:
- STREET
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Gloss Black - Sportster SMSP-2G
ULTRACOOL
$589.99High oil temperatures degrade engine performance and shorten component lifespan—the ULTRACOOL Side Mount Oil Cooler Kit maintains optimal thermal management, keeping your Sportster running at peak efficiency under sustained riding or racing conditions...07130166- SKU:
- 07130166
- Availability:
- Ships Same Business Day
- Weight:
- 6.60 LBS
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- OIL COOLER
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
$589.99 -
ULTRACOOL Frame Mount Oil Cooler Kit - Chrome - M8 SMT8-1C
ULTRACOOL
$589.99Engine oil temperature directly impacts performance, lubrication efficiency, and component longevity—especially under sustained track conditions or high-output forced induction applications. The ULTRACOOL Frame Mount Oil Cooler Kit automatically manages...07130167- SKU:
- 07130167
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$589.99Qty in Cart: 0Quantity:Price:$589.99Subtotal: -
ULTRACOOL Frame Mount Oil Cooler Kit - Black - M8 SMT8-1G
ULTRACOOL
$589.99Engine oil temperature is one of the most critical variables in high-performance driving—excessive heat degrades lubricant viscosity, reduces film strength, and accelerates wear on internal components. The ULTRACOOL Frame Mount Oil Cooler Kit...07130168- SKU:
- 07130168
- Availability:
- Ships Same Business Day
- Weight:
- 6.65 LBS
- UNITS:
- KIT
- COLOR/FINISH:
- GLOSS BLACK
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Chrome - M8 SMS8-1C
ULTRACOOL
$589.99High oil temperatures degrade engine lubrication, reduce viscosity, and accelerate bearing wear—especially under sustained racing or aggressive riding conditions. The ULTRACOOL Side Mount Oil Cooler Kit maintains optimal oil temperature through...07130171- SKU:
- 07130171
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- BASE FINISH:
- NATURAL
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Black - M8 SMS8-1G
ULTRACOOL
$589.99Modern high-performance engines generate extreme heat under sustained load, and inadequate oil cooling directly compromises engine longevity and peak power output. The ULTRACOOL Side Mount Oil Cooler Kit delivers active thermal management with automatic...07130172- SKU:
- 07130172
- Availability:
- Ships Same Business Day
- Weight:
- 6.75 LBS
- BASE COLOR:
- BLACK
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GLOSS BLACK
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
$589.99 -
COLONY Pushrod Covers - XL 2140-40
COLONY
$155.95Adjustable pushrods demand precision protection from debris, heat, and contamination—and these COLONY pushrod covers deliver exactly that. The XL 2140-40 kit keeps your valve train clean and operating at peak efficiency, whether you're tuning on the dyno...DS193829- SKU:
- DS193829
- Availability:
- Ships Same Business Day
- Weight:
- 0.95 LBS
- UNITS:
- KIT
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- CONVERSION KIT
- TYPE:
- PUSHROD COVER
$155.95 -
COLONY Oil Vent Fitting Chrome Big Twin 7148-3
COLONY
$17.95Oil line integrity is non-negotiable on high-performance Big Twin engines, where vibration and heat cycling can compromise factory fittings over time. The COLONY Oil Vent Fitting delivers OEM-equivalent construction with a chrome finish that resists...DS193814- SKU:
- DS193814
- Availability:
- Ships Same Business Day
- Weight:
- 0.20 LBS
- COLOR/FINISH:
- CHROME
- MATERIAL:
- STEEL
- PRODUCT NAME:
- FITTING
- RIDING STYLE:
- STREET
- TYPE:
- OIL LINE
- BASE FINISH:
- CHROME
- UNITS:
- 3 PACK
$17.95 -
COLONY Acorn Front Belt Drive Pulley Nut 7816-1
COLONY
$14.95A secure front pulley connection is critical to reliable belt drive performance—any slippage or loosening can compromise your entire primary system. The COLONY Acorn Front Belt Drive Pulley Nut 7816-1 delivers the holding power and durability you need...DS193813- SKU:
- DS193813
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- PRODUCT NAME:
- NUT
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- TYPE:
- ACORN
$14.95 -
COLONY Pushrod Kit - Big Twin 9213-4
COLONY
$38.95Maintaining proper pushrod geometry is critical for valve train reliability and consistent performance in Big Twin engines. The COLONY Pushrod Kit 9213-4 delivers OEM-equivalent components that ensure precise fitment and eliminate the guesswork when...DS193768- SKU:
- DS193768
- Availability:
- Ships Same Business Day
- Weight:
- 0.25 LBS
- BASE FINISH:
- CHROME
- TYPE:
- PUSHROD
- MOUNTING POSITION:
- INNER
- PRODUCT NAME:
- TUBE KIT
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- UNITS:
- SET OF 4
$38.95 -
COLONY Pushrod Kit - Big Twin 9202-12
COLONY
$65.95Pushrod tube assemblies are critical to proper valve train geometry and engine reliability on Big Twin motors—wear or damage compromises both performance and longevity. The COLONY Pushrod Kit 9202-12 delivers exact OEM-specification components, ensuring...DS193767- SKU:
- DS193767
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- UNITS:
- SET OF 4
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- TUBE KIT
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- LOWER
- RIDING STYLE:
- STREET
- TYPE:
- PUSHROD
$65.95 -
COLONY Pushrod Kit - Shovelhead/Evolution/Big Twin 7508-20
COLONY
$55.95A leaking or worn pushrod tube assembly compromises engine seal integrity and invites oil seepage that degrades performance and cleanliness. The COLONY Pushrod Kit delivers exact OEM-specification components engineered for Shovelhead, Evolution, and Big...DS193766- SKU:
- DS193766
- Availability:
- Ships Same Business Day
- Weight:
- 0.44 LBS
- MOUNTING POSITION:
- UPPER
- TYPE:
- PUSHROD
- UNITS:
- SET OF 4
- PRODUCT NAME:
- TUBE KIT
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
$55.95 -
COLONY PUSHROD TUBE KIT 99-17 TC DS193758
COLONY
$85.95If you're upgrading to adjustable pushrods on your Twin Cam motor, you need proper short lower tubes that won't compromise valve train geometry or accessibility. The Colony kit eliminates guesswork with four precision-engineered tubes and clips that keep...DS193758- SKU:
- DS193758
- Availability:
- Ships Same Business Day
- Weight:
- 0.40 LBS
- PRODUCT NAME:
- TUBE KIT
- RIDING STYLE:
- STREET
- UNITS:
- 4 PACK
- MOUNTING POSITION:
- LOWER
- STYLE:
- QUICK INSTALL
- TYPE:
- PUSHROD
$85.95 -
COLONY Pump Mounting Kit - Parkerized 9694-19
COLONY
$30.95If you're rebuilding a pump assembly or replacing worn fasteners, sourcing the correct 1/4"-24 hard-to-find hex nuts can derail your project. This OEM-style COLONY kit eliminates the hunt by providing everything you need in one package—studs, nuts, and...09320068- SKU:
- 09320068
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- BASE FINISH:
- PARKERIZED
- PRODUCT NAME:
- MOUNTING HARDWARE
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- COLOR/FINISH:
- PARKERIZED
- TYPE:
- OIL PUMP
- UNITS:
- KIT
$30.95 -
COLONY Pump Mounting Kit - Cadmium 8741-19
COLONY
$30.95Securing your pump mounting system requires hardware that won't strip, crack, or fail under sustained load—and sourcing OEM-spec fasteners individually wastes time and invites compatibility issues. The COLONY Pump Mounting Kit delivers a complete,...09320067- SKU:
- 09320067
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- COLOR/FINISH:
- CADMIUM
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- TYPE:
- OIL PUMP
- PRODUCT NAME:
- MOUNTING HARDWARE
- RIDING STYLE:
- STREET
$30.95 -
COLONY Pump Mounting Kit - Chrome 8740-19
COLONY
$36.95If you're rebuilding or upgrading your pump assembly, sourcing the correct fasteners shouldn't be a hassle—yet OEM 1/4"-24 hex nuts are notoriously difficult to find as individual components. The COLONY Pump Mounting Kit eliminates guesswork by providing...09320066- SKU:
- 09320066
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- OIL PUMP
- BASE FINISH:
- CHROME
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- MOUNTING HARDWARE
- RIDING STYLE:
- STREET
$36.95 -
COLONY Pump Mount Nut - Chrome 8108-1
COLONY
$6.95Pump mount fasteners take a beating in high-performance applications, and sourcing OEM-spec replacements shouldn't be a headache. The COLONY 8108-1 Chrome Pump Mount Nut gives you the exact 1/4"-24 specification you need—hard-to-find elsewhere—in a...09320063- SKU:
- 09320063
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- MOUNTING HARDWARE
- RIDING STYLE:
- STREET
- BASE FINISH:
- CHROME
- TYPE:
- OIL PUMP
- UNITS:
- EACH
$6.95
