Bosch 17025 Oxygen Sensor LSU 4.9 5-Wire Wideband Lambda Sensor For Sale

Bosch Premium Wideband A/F Oxygen Sensor (LSU 4.9) for aftermarket wideband gauge kits . Designed for use with AEM, Autometer, FAST, Dynojet, PLX, and Motec wideband controllers . Provides precise air/fuel ratio measurement for tuning and performance monitoring .

🔹 Key Features

• Universal Fitment – Compatible with most aftermarket wideband gauge kits (AEM #30-0300, 30-0310, 30-4110, 30-2004; Autometer #2243; FAST #170408; PLX Type B; Motec #57005)

• Precise Air/Fuel Measurement – Wideband sensing element provides proportional oxygen measurement (10:1 to 20:1 A/F ratio) vs. standard narrowband sensors

• 5-Wire Design – LSU 4.9 sensor with 5 wires and OE-style flat contacts

• Direct-Fit Connector – True OE-style harness with flat contact connector

• Pre-coated Threads – Anti-seize compound pre-applied for easy installation

🔹 SpecificationsFieldDetailBrandBoschPart Number17025 / 0258017025TypeWideband Lambda Oxygen Sensor (LSU 4.9)Wire Quantity5Cable Length1,000 mm / 39.4 inchesThread SizeM18 x 1.5 (standard O2 sensor)Connector TypeFlat contacts / OE-styleMeasuring Range10:1 to 20:1 A/F ratioSensor TypeBroadband (Wideband)Recommended Interval250,000 kmDimensions (L x W x H)14.8 x 10 x 5.6 cmWeight4-6 oz (approx.)ConditionNewQuantity1 Sensor🔹 Compatibility – Aftermarket Wideband Kits

AEM Wideband Kits:

Kit NumberCompatibility30-0300✅ Direct Fit30-0310✅ Direct Fit30-4110✅ Direct Fit30-2004✅ Compatible30-4100❌ Does NOT Fit

Other Compatible Gauges/Controllers:

BrandPart (Wideband Commander)PLX DevicesType BMotec57005GM / ACDelco12575657 / 213-1572

Vehicle Fitment (Limited Production (VZ)2004-20073.6L V6HoldenCalais (VZ)2004-20063.6L V6HoldenCaprice (WL)2004-20063.6L V6HoldenStatesman (WL)2004-20063.6L V6

Important: This is a UNIVERSAL wideband sensor for aftermarket gauges. For stock OEM vehicle replacement, confirm your vehicle uses 5-wire wideband sensors (not narrowband).

🔹 Important Notes

• Aftermarket Gauge Use Only – This sensor is designed for use with aftermarket wideband gauge kits

• LSU 4.9 Technology – Uses Bosch\'s advanced 4.9 generation wideband sensing element

• Will NOT work with: Dominator or HP systems (check compatibility), AEM 30-4100 (older kit uses different sensor)

• Replacement Interval – Bosch recommends replacement at 250,000 km / 155,000 miles

• Pre-coated Threads – Do NOT apply additional anti-seize

• Review Note: Most users report excellent performance, though some have experienced premature failure (likely due to rich running conditions during tuning)

🔹 Installation Tips

Difficulty Level: Moderate (2/5)

Installation Guidelines:

1. Allow exhaust system to cool completely

2. Disconnect battery negative terminal

3. Remove old sensor (22mm or 7/8\" O2 sensor socket recommended)

4. Apply anti-seize to threads ONLY if not pre-coated (Bosch sensors come pre-coated)

5. Thread new sensor in by hand to avoid cross-threading

6. Torque to 35-45 Nm (26-33 ft-lbs)

7. Route harness away from exhaust and moving parts

8. Connect to gauge/controller using OE-style flat contact connector

🔹 Package Includes

• Bosch 17025 Wideband Oxygen Sensor (1)

• Pre-attached harness with connector

• Pre-coated threads (anti-seize applied)

🔹 Return Policy

30-day returns accepted. Item must be in original, unused condition.

🔹 Shipping

Ships within 1 business day of cleared payment.