Koso HD-02 Digital Oil Temperature Gauge For Harley-Davidson Touring (2004–2013)
Direct Plug-and-Play Fairing Upgrade & Precision Thermal Protection for Twin Cam Models
Keep precise control over your Twin Cam engine’s thermal health with the Koso HD-02 Digital Oil Temperature Gauge. Specially engineered to fit directly into the factory 2-inch fairing gauge cutouts on 2004 through 2013 Harley-Davidson Touring models, this high-performance electronic gauge provides instant numeric oil temperature readings alongside an intuitive bar-graph display.
Excessive oil heat is the primary cause of engine oil degradation and internal component wear in air-cooled Twin Cam 88, 96, 103, and 110 engines. The Koso HD-02 replaces dull stock ambient air temperature gauges or blank fairing plugs, giving riders real-time visual tracking from 100°F to 400°F. Featuring customizable dual-color backlighting (red or blue) and an integrated high-temp warning indicator, it blends factory OEM styling with modern digital precision.
Technical Specifications & Product Details
| Feature / Metric | Product Specification | Rider Benefit |
|---|---|---|
| Brand / Manufacturer | Koso North America | Global leader in high-performance digital motorcycle instrumentation and electronics |
| Display Type | High-Contrast Digital LCD Display + LED Bar Graph | Delivers instant numeric temperature readouts and quick visual thermal bar status |
| Temperature Range | 100°F to 400°F (38°C to 204°C) | Tracks full operating spectrum and alerts rider before critical oil breakdown temperatures |
| Backlight Colors | Selectable Red or Blue Illumination | Seamlessly matches original OEM factory gauge backlighting across night riding conditions |
| Installation Interface | Direct OEM Plug-and-Play Wiring Harness | Installs into factory 2″ fairing holes without cutting wires or custom dashboard modifications |
Design Highlights & Advanced Digital Features
### Seamless OEM Fairing Integration
The Koso HD-02 is manufactured to match the exact outer bezel dimensions and black/chrome aesthetic of factory Harley-Davidson fairing instruments. Designed as a direct drop-in replacement for the rarely used ambient air temp gauge, it transforms an empty or inaccurate dash slot into a critical engine monitoring tool.
### Programmable Over-Temp Flash Alert
To keep your eyes focused on the highway, the HD-02 features a user-programmable temperature warning. If engine oil temperature exceeds your set safety limit, the entire gauge display flashes to immediately notify you of thermal buildup during heavy traffic or steep mountain climbs.
Vehicle & Engine Compatibility Guide
Koso HD-02 Oil Temperature Gauges feature direct plug-and-play fitment for 2004–2013 Harley-Davidson Touring models equipped with batwing fairings or dash consoles:
### Compatible Harley-Davidson Touring Models (2004–2013)
- Harley-Davidson Street Glide: FLHX / FLHXS (2006–2013)
- Harley-Davidson Electra Glide Classic / Ultra Classic: FLHT, FLHTC, FLHTCU (2004–2013)
- Harley-Davidson Electra Glide Ultra Limited: FLHTK (2010–2013)
- Harley-Davidson Tri Glide Ultra Classic: FLHTCUTG (2009–2013)
Fitment Note: Fits 2″ factory fairing gauge holes on 2004–2013 Batwing fairing models. Includes oil temperature sensor unit and sensor wire harness. Does not fit 2014-up Rushmore Touring models due to CAN-bus wiring changes.
Step-by-Step DIY Installation Overview
Installing the Koso HD-02 Gauge into your Harley fairing takes approximately 45 to 60 minutes with basic hand tools.
### Required Tools
- Torx Key Set (T25/T27 for outer fairing removal)
- Standard Open-End Wrench Set
- Thread Sealant Paste / Teflon Tape
- Zip Ties / Wire Clips
### Step 1: Remove Outer Fairing & Stock Gauge
Remove the windshield and outer batwing fairing screws. Disconnect and pop out the factory ambient air temperature gauge from the rear retaining bracket inside the inner fairing.
### Step 2: Install Koso Temperature Sensor
Locate the oil pan port or oil gallery plug on your Twin Cam engine base. Apply thread sealant to the included Koso oil temperature sensor and thread it securely into the port.
### Step 3: Route Harness & Mount Gauge
Route the sensor wire harness cleanly up along the frame rail into the fairing cavity. Snap the Koso HD-02 gauge into the 2″ fairing hole, plug in the factory backlight connector and sensor lead, reassemble the fairing, and power on to test.
Frequently Asked Questions
### Does this gauge replace the stock ambient air temp gauge?
Yes. Most riders swap out the factory ambient air temperature gauge—which is notoriously inaccurate due to fairing heat—and replace it with the Koso HD-02 to monitor actual engine oil temperature.
### Can I switch the display reading between Fahrenheit and Celsius?
Yes. The Koso HD-02 allows you to easily toggle between Fahrenheit (°F) and Celsius (°C) temperature scales during initial gauge setup.
### Order Your Koso HD-02 Oil Temperature Gauge Today
Equip your Harley Touring bagger with state-of-the-art digital temperature tracking and factory-matched style. Order your **Koso HD-02 Oil Temperature Gauge** today with fast shipping!
