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
-
K & N Oil Filter - Chrome - Evolution KN-170C
K & N
$19.99K&N delivers a premium oil filter which is built with a synthetic media specifically designed to withstand the high concentrates of synthetic racing oils, A large filter media provides high-flow rates and outstanding oil filtration to keep your motor...KN170C- SKU:
- KN170C
- Availability:
- Ships Same Business Day
- Weight:
- 0.80 LBS
- COLOR/FINISH:
- CHROME
- BASE FINISH:
- CHROME
- FEATURES:
- INCLUDES NUT
- UNITS:
- EACH
- BASE COLOR:
- SILVER
- LENGTH METRIC:
- 94 MM
- PRODUCT NAME:
- OIL FILTER
- FILTER MEDIA MATERIAL:
- SYNTHETIC
- RIDING STYLE:
- STREET
- STYLE:
- STANDARD
- TYPE:
- SPIN-ON
$19.99 -
Pro Filter 2002-2010 Buell XB12R Firebolt XB12S Lightning XB12X Ulysses Oil Filter PF-177
PRO FILTER
$11.99Experience superior engine protection with the PRO FILTER Replacement Oil Filter PF-177. Designed for both synthetic and petroleum-based oils, this high-performance filter ensures optimal flow rates and durability, exceeding OEM specifications for...07120627- SKU:
- 07120627
- Availability:
- Ships Same Business Day
- Weight:
- 0.60 LBS
- PRODUCT NAME:
- OIL FILTER
- BASE COLOR:
- BLACK
- STYLE:
- PREMIUM
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- FILTER MEDIA MATERIAL:
- PAPER
- RIDING STYLE:
- STREET
$11.99 -
On Sale
PRO-ONE PERF.MFG. Universal Oil Cooler Kit - Chrome 201050
PRO-ONE PERF.MFG.
MSRP: $307.95Now: $277.16Was: $307.95CNC-machined from billet aluminum, Kits mount to frame tubes with supplied clamps and reducers, Come with AN #6 fittings (use with -6 lines found in most speed shops), If using standard 3/8" hose, use a breather fitting, Measure 12" L x 2.25" diameter,...DS310204- SKU:
- DS310204
- Availability:
- Ships Same Business Day
- Weight:
- 3.63 LBS
- COLOR/FINISH:
- CHROME
- FOR FRAME TUBE DIAMETER IMPERIAL:
- 1' - 1-1/4'
- UNITS:
- EACH
- BASE FINISH:
- CHROME
- FOR FRAME TUBE DIAMETER METRIC:
- 25.4 MM - 31.8 MM
- OUTSIDE DIAMETER IMPERIAL:
- 2-1/4'
- FEATURES:
- WITHOUT GAUGE
- MATERIAL:
- ALUMINUM
- RIDING STYLE:
- STREET
- LENGTH IMPERIAL:
- 12'
- LENGTH METRIC:
- 305 MM
- OUTSIDE DIAMETER METRIC:
- 57.2 MM
- PRODUCT NAME:
- OIL COOLER KIT
MSRP: $307.95Now: $277.16Was: $307.95Qty in Cart: 0Quantity:Price:MSRP: $307.95Now: $277.16Was: $307.95Subtotal: -
On Sale
PRO-ONE PERF.MFG. No Gauge Oil Cooler Kit - Black - 1"- 1-1/4" 201050B
PRO-ONE PERF.MFG.
MSRP: $307.95Now: $277.16Was: $307.95CNC-machined from billet aluminum, Kits mount to frame tubes with supplied clamps and reducers, Come with AN #6 fittings (use with -6 lines found in most speed shops), If using standard 3/8" hose, use a breather fitting, Measure 12" L x 2.25" diameter,...07130073- SKU:
- 07130073
- Availability:
- Ships Same Business Day
- Weight:
- 3.90 LBS
- BASE COLOR:
- BLACK
- FEATURES:
- WITHOUT GAUGE
- MATERIAL:
- ALUMINUM
- PRODUCT NAME:
- OIL COOLER KIT
- COLOR/FINISH:
- BLACK
- FOR FRAME TUBE DIAMETER METRIC:
- 25.4 MM - 31.8 MM
- LENGTH IMPERIAL:
- 12'
- LENGTH METRIC:
- 305 MM
- OUTSIDE DIAMETER METRIC:
- 57.2 MM
- FOR FRAME TUBE DIAMETER IMPERIAL:
- 1' - 1-1/4'
- OUTSIDE DIAMETER IMPERIAL:
- 2-1/4'
- RIDING STYLE:
- STREET
- UNITS:
- EACH
MSRP: $307.95Now: $277.16Was: $307.95 -
On Sale
PRO-ONE PERF.MFG. Oil Tank Mount Stud Cover 302190
PRO-ONE PERF.MFG.
MSRP: $26.35Now: $23.72Was: $26.35Fit the rubber mounts on Softail oil tanks, Show-chrome plated07100165- SKU:
- 07100165
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- PRODUCT NAME:
- COVER
- BASE FINISH:
- CHROME
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- STYLE:
- SOFTAIL (SWING ARM)
- TYPE:
- OIL TANK MOUNT
- UNITS:
- PAIR
MSRP: $26.35Now: $23.72Was: $26.35 -
On Sale
PRO-ONE PERF.MFG. Slimline Oil Filter Mount - Chrome 203150
PRO-ONE PERF.MFG.
MSRP: $98.95Now: $89.06Was: $98.951/2" thick billet aluminum mount with 3/8" external fittings, Provide a low-cost, slim oil filter mount07120035- SKU:
- 07120035
- Availability:
- Ships Same Business Day
- Weight:
- 1.00 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- EACH
- MODEL:
- SLIMLINE
- TYPE:
- OIL FILTER
- BASE FINISH:
- CHROME
- MATERIAL:
- BILLET ALUMINUM
- PRODUCT NAME:
- MOUNT
MSRP: $98.95Now: $89.06Was: $98.95 -
ULTRACOOL Side Mount Oil Cooler Kit - Black - FLH SMT-2G
ULTRACOOL
$589.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130204- SKU:
- 07130204
- Availability:
- Ships Same Business Day
- Weight:
- 2.35 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 -
ULTRACOOL Side Mount Oil Cooler Kit - Gloss Black - Sportster SMSP-1G
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130224- SKU:
- 07130224
- Availability:
- Ships Same Business Day
- Weight:
- 6.51 LBS
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- RIDING STYLE:
- STREET
$549.99 -
ULTRACOOL Below Regulator Mount Oil Cooler - Stainless Steel RF-2CSS
ULTRACOOL
$549.99Specifically designed for the T series S&S 111, 124 and 143 engines, Includes a special machined adapter to fit perfectly into the S&S cases, Will not fit with water cooled heads07130246- SKU:
- 07130246
- Availability:
- Ships Same Business Day
- Weight:
- 7.86 LBS
- MOUNTING POSITION:
- BELOW REGULATOR
- PRODUCT NAME:
- OIL COOLER
- BASE COLOR:
- SILVER
- COLOR/FINISH:
- STAINLESS STEEL
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$549.99 -
ULTRACOOL Side Mount Oil Cooler - Chrome SMT-2CSS
ULTRACOOL
$589.99Sealed waterproof IP68 fans produce 220 CFM of airflow, Oil adapter and thermal switch automatically turns on the dual fans when your oil reaches 210°F, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation,...07130249- SKU:
- 07130249
- Availability:
- Ships Same Business Day
- Weight:
- 7.71 LBS
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
- RIDING STYLE:
- STREET
- BASE COLOR:
- SILVER
- MATERIAL:
- STAINLESS STEEL
$589.99 -
ULTRACOOL Oil Cooler - Chrome - Indian IN-1C
ULTRACOOL
$589.99Sealed waterproof IP68 fans produce 220 CFM of airflow, Oil adapter and thermal switch automatically turns on the dual fans when your oil reaches 210°F, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation,...07130251- SKU:
- 07130251
- Availability:
- Ships Same Business Day
- Weight:
- 7.36 LBS
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
- BASE COLOR:
- SILVER
- MATERIAL:
- STAINLESS STEEL
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- SIDE MOUNT
- RIDING STYLE:
- STREET
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Chrome - FLH SMT-2C
ULTRACOOL
$589.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130203- SKU:
- 07130203
- Availability:
- Ships Same Business Day
- Weight:
- 3.15 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
$589.99 -
ULTRACOOL Oil Cooler Kit - Black RF-2G
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130150- SKU:
- 07130150
- Availability:
- Ships Same Business Day
- Weight:
- 7.75 LBS
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- BELOW REGULATOR
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- OIL COOLER
- MOUNTING POSITION:
- CENTER MOUNT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
$549.99 -
ULTRACOOL Oil Cooler Kit - Flat Black RF-2F
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130151- SKU:
- 07130151
- Availability:
- Ships Same Business Day
- Weight:
- 7.66 LBS
- MOUNTING POSITION:
- CENTER MOUNT
- UNITS:
- KIT
- PRODUCT NAME:
- OIL COOLER
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- BASE FINISH:
- FLAT
- COLOR/FINISH:
- FLAT BLACK
- MOUNTING POSITION:
- BELOW REGULATOR
$549.99 -
ULTRACOOL Oil Cooler Kit - Chrome DY-1SS
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130152- SKU:
- 07130152
- Availability:
- Ships Same Business Day
- Weight:
- 7.05 LBS
- COLOR/FINISH:
- CHROME
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MOUNTING POSITION:
- CENTER MOUNT
- BASE FINISH:
- NATURAL
- PRODUCT NAME:
- OIL COOLER
- MOUNTING POSITION:
- BELOW REGULATOR
$549.99 -
ULTRACOOL Oil Cooler Kit - Black DY-1G
ULTRACOOL
$549.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130153- SKU:
- 07130153
- Availability:
- Ships Same Business Day
- Weight:
- 7.16 LBS
- BASE COLOR:
- BLACK
- MOUNTING POSITION:
- BELOW REGULATOR
- MOUNTING POSITION:
- CENTER MOUNT
- RIDING STYLE:
- STREET
- COLOR/FINISH:
- GLOSS BLACK
- PRODUCT NAME:
- OIL COOLER
- UNITS:
- KIT
$549.99 -
ULTRACOOL Oil Cooler Kit - Flat Black DY-1F
ULTRACOOL
$499.00Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130154- SKU:
- 07130154
- Availability:
- Ships Same Business Day
- Weight:
- 7.20 LBS
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- BASE FINISH:
- FLAT
- COLOR/FINISH:
- FLAT BLACK
- MOUNTING POSITION:
- CENTER MOUNT
- MOUNTING POSITION:
- BELOW REGULATOR
- UNITS:
- KIT
- PRODUCT NAME:
- OIL COOLER
$499.00 -
ULTRACOOL Side Mount Oil Cooler Kit - Chrome - FLH SMT-1C
ULTRACOOL
$589.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130157- SKU:
- 07130157
- Availability:
- Ships Same Business Day
- Weight:
- 7.55 LBS
- BASE FINISH:
- NATURAL
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- COLOR/FINISH:
- CHROME
- PRODUCT NAME:
- OIL COOLER
$589.99 -
ULTRACOOL Side Mount Oil Cooler Kit - Black - FLH SMT-1G
ULTRACOOL
$589.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130158- SKU:
- 07130158
- Availability:
- Ships Same Business Day
- Weight:
- 7.55 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- 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 - Dyna SMD-1C
ULTRACOOL
$589.99Oil Adapter and Thermal Switch with waterproof connectors automatically turns on the powerful dual fans when oil reaches 210 degrees, Specially designed aluminum heat exchanger with turbulators for maximum heat dissipation, Sealed Waterproof IP68 Dual...07130161- SKU:
- 07130161
- Availability:
- Ships Same Business Day
- Weight:
- 7.65 LBS
- UNITS:
- KIT
- RIDING STYLE:
- STREET
- BASE FINISH:
- NATURAL
- COLOR/FINISH:
- CHROME
- MOUNTING POSITION:
- DOWN TUBE
- MOUNTING POSITION:
- SIDE MOUNT
- PRODUCT NAME:
- OIL COOLER
$589.99
