Name: Exhaust Lambda O2 Oxygen Sensor Hyosung GT250RC GT650RC GV650 ST7 GV250 GD250
SKU: 37950H99D02JS-GT250RC
Price: 54.99 GBP
Availability: InStock

Exhaust Lambda O2 Oxygen Sensor Hyosung GT250RC GT650RC GV650 ST7 GV250 GD250

Estimated delivery dates: Aug 27, 2026 - Aug 28, 2026

£54.99

💎 EXHAUST O2 LAMBDA SENSOR // STOP ROUGH RUNNING

Restore fuel mapping efficiency and turn off dashboard warning lights. This vital oxygen sensor provides accurate air-fuel tracking for your fuel injection system, preventing sudden misfires, jerky speed response, and heavy petrol use. It is a direct fit replacement built to keep your bike’s computer tracking cleanly across all weather changes.

Fixes EFi Issues // Clears erratic fueling blocks and active dashboard fault codes.
OEM Specification // Direct plug-and-play matching plug dimensions for standard Delphi wiring.
Reliability // Guarantees the optimal fuel mixture for a balanced engine idle.
📦 Note // Supplied as a single unit (1x piece).

FITMENT NOTE: Strictly for Delphi fuel injection variants built from 2012 onwards. This thread format is not compatible with older systems.
❌Electrical components cannot be returned once dispatched.

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Description

The exhaust lambda sensor is a core monitoring part of your fuel injection system. When it becomes fouled from high exhaust heat or internal soot, your engine computer runs blind, causing frustrating flat spots during acceleration. Fitting this quality aftermarket version restores proper feedback to the engine management, bringing back clean power delivery and stable fuel mileage.

💎 Technical Performance Spec

Accurate Air ReadingsConstantly tracks the exhaust stream to balance the engine mix.	Stops Rough RunningSmooths out jerky throttle transitions and poor stationary idling.
OEM Spec ConnectorMoulded plug links cleanly with your standard wiring loom connector.	Wide Multi-Bike FitmentVersatile sensor thread setup that fits several injection models.

📜 Model Fitment (Delphi EFi Only)

Confirmed Matches: Fits GT250RC, GT650RC, GV650, ST7 (GV700i), GV250, and GD250 versions equipped with the factory Delphi setup.

❌ WILL NOT FIT:

This aftermarket version will not fit old carburettor setups, bikes with Sentec computers, or older Daewoo / Mitsubishi electric systems. Check your plug block shape before buying.

💡 ESSENTIAL INSTALLATION TIP:
Always apply a thin smear of anti-seize copper paste to the threads of your new sensor before spinning it into the exhaust bung. This simple step prevents the metal from welding itself permanently to the pipe under extreme operating heat.

🔧 Fitting Tips

Verify Before Ordering: Because these bikes used various engine setups over the years, snap a quick photo of your exhaust plug wire if you want our desk to check it.
Order Quantity Check: V-twin models like the GT650R and GV650 cruiser run two independent sensors. Update your basket quantity to two if you are renewing both cylinders.
Torque Down Correctly: Screw the sensor body carefully by hand first to avoid cross-threading the exhaust pipe, then nip it secure using manual spanners.

📧 NEED HELP TRACING AN INDUCTION FAULT?
If you want to decode an injection warning blink or need to confirm your wires, drop our support desk a line. For ECU diagnostic guides or installation advice, head to the forums.

SKU: 37950H99D02JS-GT250RC Categories: ⚙️ GD250N / GD250R, ⚙️ GT250 / GT250R, ⚙️ GT650 / GT650R, ⚙️ GV250 (EFi), ⚙️ GV650, ⚙️ ST7 (GV700), 🔧 Service & Maintenance Tags: 250, 650, efi, gd250n, gd250r, gt250, gt250r, gt250rc, gt650, gt650r, gv250, gv650, plug & play kits, service-kits, st7

Additional information

Weight	1 kg
Dimensions	10 × 10 × 5 cm

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Exhaust Lambda O2 Oxygen Sensor Hyosung GT250RC GT650RC GV650 ST7 GV250 GD250