Harley Fuel Injection Parts
Harley-Davidson Fuel Injection Parts at JJ Motorsports
Enhance your Harley's EFI system with premium fuel injection parts from JJ Motorsports, featuring throttle bodies, oxygen sensors, high-flow injectors, and MAP sensors for precise fuel delivery and optimized performance on Milwaukee-Eight, Twin Cam, and Touring models. These high-quality components ensure smoother throttle response, better atomization, and dyno-level gains.
Shop Horsepower Inc, ThunderMax, and Feuling Oil Pump Corp fuel injection parts for race-proven reliability. Explore related categories such as Harley air and fuel for air cleaners and jets, or Harley for exhaust and cams to complete your EFI upgrades and unleash V-Twin potential.
Top Harley-Davidson Fuel Injection Parts
- Horsepower Inc Throttle Body Black 51mm 1.71 HPI-51D1-17B – 51mm black throttle body for M8 engines; direct-fit with improved flow for throttle-by-wire setups.
- ThunderMax Oxygen Sensor 309-355 – Wideband O2 sensor for ThunderMax EFI; precise air/fuel monitoring for self-tuning systems.
- Feuling Oil Pump Corp EV 6 Series Fuel Injector M8 6-1 9935 – EV6 injector for Milwaukee-Eight; high-flow for increased fuel delivery on modified Harleys.
- Feuling Oil Pump Corp MAP Sensor 9953 – Manifold absolute pressure sensor; accurate boost/vacuum readings for EFI tuning.
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
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On Sale
S&S CYCLE Air Control Motor Idle 55-5085
S&S CYCLE
MSRP: $163.95Now: $147.56Was: $163.95Precise idle control is critical for engine reliability and drivability, especially when running modified fuel systems or forced induction setups. The S&S Cycle Air Control Motor ensures consistent idle speeds across varying engine conditions without...10220209- SKU:
- 10220209
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- RIDING STYLE:
- STREET
- BASE COLOR:
- BLACK
- TYPE:
- IDLE AIR CONTROL
- UNITS:
- EACH
- COLOR/FINISH:
- BLACK
- PRODUCT NAME:
- MOTOR KIT
MSRP: $163.95Now: $147.56Was: $163.95 -
On Sale
S&S CYCLE Air Intake Sensor 55-5041
S&S CYCLE
MSRP: $109.95Now: $98.96Was: $109.95Precise air intake measurement is critical to maintaining optimal fuel mapping and engine performance, especially when running modified throttle bodies or performance fuel injection systems. The S&S Cycle Air Intake Sensor (55-5041) delivers the accuracy...10220211- SKU:
- 10220211
- Availability:
- Ships Same Business Day
- Weight:
- 0.10 LBS
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- AIR TEMPERATURE
- PRODUCT NAME:
- SENSOR
MSRP: $109.95Now: $98.96Was: $109.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 117" 170-0340
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A properly flowing throttle body is fundamental to unlocking your engine's potential, and the S&S CYCLE 58mm throttle body delivers the precision airflow your 117" big-twin demands. This sealed, stainless steel design eliminates restrictions at the...10220185- SKU:
- 10220185
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- BORE SIZE METRIC:
- 58.00 MM
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MANIFOLD SIZE:
- 408
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 66mm 170-0341
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A larger throttle body is one of the most direct ways to unlock additional airflow and responsiveness in your fuel-injected Harley engine. The S&S 66mm design bolts directly onto your existing manifold and sensors, eliminating the need for custom...10220186- SKU:
- 10220186
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- UNITS:
- KIT
- BORE SIZE METRIC:
- 66.00 MM
- MANIFOLD SIZE:
- 417
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 66mm 124" 170-0348
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A properly sized throttle body is critical for maximizing airflow and delivering consistent throttle response on high-displacement engines. The S&S 66mm unit eliminates restrictions in your intake tract while maintaining seamless integration with your...10220193- SKU:
- 10220193
- Availability:
- Ships Same Business Day
- Weight:
- 2.80 LBS
- RIDING STYLE:
- STREET
- BORE SIZE METRIC:
- 66.00 MM
- MANIFOLD SIZE:
- 417
- PRODUCT NAME:
- THROTTLE BODY
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 124" 170-0338
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95If you're running a 124" engine and want genuine air-flow improvements without compromising reliability, the S&S CYCLE 58mm Throttle Body delivers the precision intake you need. This one-piece design bolts directly to your manifold using your existing...10220183- SKU:
- 10220183
- Availability:
- Ships Same Business Day
- Weight:
- 3.25 LBS
- BORE SIZE METRIC:
- 58.00 MM
- MANIFOLD SIZE:
- 417
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 111" 170-0339
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A properly sized throttle body is fundamental to unlocking your engine's breathing potential—the S&S 58mm unit delivers increased airflow without sacrificing the stock appearance or sensor compatibility your build requires. This stainless steel design...10220184- SKU:
- 10220184
- Availability:
- Ships Same Business Day
- Weight:
- 3.20 LBS
- BORE SIZE METRIC:
- 58.00 MM
- MANIFOLD SIZE:
- 398
- UNITS:
- KIT
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
MSRP: $995.95Now: $896.36Was: $995.95Qty in Cart: 0Quantity:Price:MSRP: $995.95Now: $896.36Was: $995.95Subtotal: -
On Sale
S&S CYCLE O2 Sensor - '95-'99 EFI 106-2067
S&S CYCLE
MSRP: $399.95Now: $359.96Was: $399.95A properly functioning O2 sensor is critical for maintaining accurate fuel mixture and engine efficiency on carbureted-to-EFI conversion builds. The S&S Cycle O2 Sensor ensures your Magneti Marelli EFI system reads combustion data with precision,...10220108- SKU:
- 10220108
- Availability:
- Ships Same Business Day
- Weight:
- 1.40 LBS
- TYPE:
- NARROW-BAND O2
- OXYGEN SENSOR PLUG SIZE IMPERIAL:
- 0.71'
- PRODUCT NAME:
- SENSOR
- UNITS:
- KIT
- RIDING STYLE:
- STREET
MSRP: $399.95Now: $359.96Was: $399.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 170-0337
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95If you're running an S&S head on your big-inch engine, intake flow becomes your limiting factor—and the stock throttle body is holding back your performance. The S&S Cycle 58mm Throttle Body delivers measurably improved airflow while maintaining complete...10220182- SKU:
- 10220182
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- BORE SIZE METRIC:
- 58.00 MM
- MANIFOLD SIZE:
- 410
- RIDING STYLE:
- STREET
- PRODUCT NAME:
- THROTTLE BODY
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 66mm 124" 170-0342
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A properly sized throttle body is critical for maximizing airflow and engine responsiveness in high-displacement engines. The S&S 66mm unit delivers significantly improved volumetric efficiency compared to undersized stock components, while maintaining...10220187- SKU:
- 10220187
- Availability:
- Ships Same Business Day
- Weight:
- 3.05 LBS
- BORE SIZE METRIC:
- 66.00 MM
- MANIFOLD SIZE:
- 410
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 124" 170-0345
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A properly sized throttle body is critical for maximizing airflow and throttle response on any high-displacement engine. The S&S 58mm design delivers a direct bolt-on solution that maintains stock appearance while eliminating flow restrictions common to...10220190- SKU:
- 10220190
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- PRODUCT NAME:
- THROTTLE BODY
- BORE SIZE METRIC:
- 58.00 MM
- MANIFOLD SIZE:
- 417
- RIDING STYLE:
- STREET
- UNITS:
- KIT
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 170-0346
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95If you're running a high-performance engine and want measurable gains in throttle response and airflow, the S&S Cycle 58mm Throttle Body is a direct bolt-on upgrade that delivers. The sealed stainless steel design with dual roller bearings eliminates...10220191- SKU:
- 10220191
- Availability:
- Ships Same Business Day
- Weight:
- 3.35 LBS
- UNITS:
- KIT
- BORE SIZE METRIC:
- 58.00 MM
- MANIFOLD SIZE:
- 405
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 58mm 111" 170-0347
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95If you're running an 111" engine and want measurable intake flow improvements without fabrication headaches, the S&S Cycle 58mm throttle body is the direct bolt-on solution. This one-piece design maintains stock appearance while delivering genuine...10220192- SKU:
- 10220192
- Availability:
- Ships Same Business Day
- Weight:
- 3.30 LBS
- MANIFOLD SIZE:
- 398
- UNITS:
- KIT
- BORE SIZE METRIC:
- 58.00 MM
- PRODUCT NAME:
- THROTTLE BODY
- RIDING STYLE:
- STREET
MSRP: $995.95Now: $896.36Was: $995.95 -
On Sale
S&S CYCLE Throttle Body - 66mm 170-0349
S&S CYCLE
MSRP: $995.95Now: $896.36Was: $995.95A larger throttle body is one of the most straightforward ways to unlock additional airflow in your intake system, translating directly to improved throttle response and performance gains. The S&S Cycle 66mm design pairs a precision-machined bore with...10220194- SKU:
- 10220194
- Availability:
- Ships Same Business Day
- Weight:
- 2.90 LBS
- RIDING STYLE:
- STREET
- UNITS:
- KIT
- MANIFOLD SIZE:
- 405
- BORE SIZE METRIC:
- 66.00 MM
- PRODUCT NAME:
- THROTTLE BODY
MSRP: $995.95Now: $896.36Was: $995.95 -
STANDARD MOTOR PRODUCTS Fuel Injector MC-INJ3
STANDARD MOTOR PRODUCTS
$84.95A fuel injector's primary job is delivering precise fuel atomization into your combustion chamber—when it fails or degrades, you'll notice rough idle, poor fuel economy, and potential misfires that compromise performance across the entire power band. The...10220077- SKU:
- 10220077
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- FUEL INJECTOR
- UNITS:
- EACH
- FLOW RATE IMPERIAL:
- 31.75 LB/H
- RIDING STYLE:
- STREET
$84.95Qty in Cart: 0Quantity:Price:$84.95Subtotal: -
CYCLE PRO LLC Throttle Sensor 18481
CYCLE PRO LLC
$51.55Achieve maximum fuel efficiency and power from the engine, Direct replacement and upgraded from the OEM design10220253- SKU:
- 10220253
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SENSOR
- RIDING STYLE:
- STREET
- TYPE:
- THROTTLE
- UNITS:
- EACH
$51.55Qty in Cart: 0Quantity:Price:$51.55Subtotal: -
CYCLE PRO LLC Throttle Sensor 18484
CYCLE PRO LLC
$63.85Achieve maximum fuel efficiency and power from the engine, Direct replacement and upgraded from the OEM design10220255- SKU:
- 10220255
- Availability:
- Ships Same Business Day
- Weight:
- 0.05 LBS
- PRODUCT NAME:
- SENSOR
- UNITS:
- EACH
- RIDING STYLE:
- STREET
- TYPE:
- THROTTLE
$63.85 -
FEULING OIL PUMP CORP. Fuel Injector 9942
FEULING OIL PUMP CORP.
$99.95Precise fuel delivery is the foundation of consistent engine performance, and a worn or failing fuel injector will compromise throttle response, fuel economy, and combustion efficiency across your entire power band. The Feuling Oil Pump Corp. Fuel...10220114- SKU:
- 10220114
- Availability:
- Ships Same Business Day
- Weight:
- 1.69 LBS
- PRODUCT NAME:
- FUEL INJECTOR
- PRODUCT NAME:
- FUEL INJECTOR RACE ONLY
- FLOW RATE IMPERIAL:
- 38.89 LB/H
- RIDING STYLE:
- STREET
- UNITS:
- EACH
$99.95 -
DRAG SPECIALTIES Crank Position Sensor - '00 Softail 63704
DRAG SPECIALTIES
$87.69A faulty crank position sensor can cause rough idle, stalling, and unreliable ignition timing—issues that'll sideline your Softail faster than you'd expect. This OEM-quality replacement from Drag Specialties restores precise crankshaft position data to...10220201- SKU:
- 10220201
- Availability:
- Ships Same Business Day
- Weight:
- 0.14 LBS
- TYPE:
- CRANK POSITION
- UNITS:
- EACH
- PRODUCT NAME:
- SENSOR
- RIDING STYLE:
- STREET
$87.69 -
DRAG SPECIALTIES Crank Position Sensor - '04-'05 XL 63699
DRAG SPECIALTIES
$87.69A failing crank position sensor can cause rough idle, misfires, and unreliable engine starts—issues that'll sideline your bike faster than a blown gasket. The DRAG SPECIALTIES replacement sensor restores accurate crankshaft timing signal to your ECU,...10220199- SKU:
- 10220199
- Availability:
- Ships Same Business Day
- Weight:
- 0.30 LBS
- TYPE:
- CRANK POSITION
- UNITS:
- EACH
- PRODUCT NAME:
- SENSOR
- RIDING STYLE:
- STREET
$87.69Qty in Cart: 0Quantity:Price:$87.69Subtotal:
