Genuine Bosch Lambda Sensor / Air Fuel Ratio Sensor 0258007351 LSU4.2

Ensure optimal engine performance and emissions control with the Bosch Lambda Sensor 0258007351 (SKU 22-237) featuring advanced LSU4.2 wideband technology. This premium OEM-quality air-fuel ratio sensor is engineered by Bosch, the world's leading oxygen sensor manufacturer and inventor of the lambda sensor. This high-precision wideband sensor monitors exhaust gas composition across the entire air-fuel ratio range to optimize fuel efficiency, reduce emissions, and ensure peak engine performance. Designed for VW and Audi applications, this sensor ensures your vehicle runs efficiently and meets emissions standards.

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Key Features & Benefits

• Genuine Bosch Quality - World's #1 oxygen sensor manufacturer
• Advanced LSU4.2 Technology - Wideband sensor for precise air-fuel ratio monitoring
• Superior Accuracy - Measures across entire air-fuel ratio range, not just stoichiometric
• Wide Application - Fits VW and Audi vehicles
• Improved Fuel Economy - Helps maintain optimal fuel mixture for better mileage
• Reduced Emissions - Keeps your vehicle running clean and compliant
• Fast Response Time - Quick sensor reaction for optimal engine management
• Enhanced Engine Performance - Prevents rough running and power loss
• Durable Construction - Built to withstand extreme temperatures and harsh conditions
• Direct OEM Replacement - Engineered to meet or exceed original specifications

Technical Specifications

• Bosch Part Number: 0258007351
• Component Type: Wideband Lambda Sensor / Air-Fuel Ratio Sensor
• Technology: LSU4.2 (Lambda Sonde Universal 4.2)
• Sensor Type: Heated wideband oxygen sensor
• Measurement Range: Full air-fuel ratio spectrum
• Weight: 0.2 kg (approximate)

Vehicle Compatibility

This Bosch LSU4.2 lambda sensor is compatible with various VW and Audi models. Always verify fitment for your specific vehicle and engine code.

CLICK HERE TO CHECK IF THIS FITS YOUR VEHICLE.

OEM Part Number Cross-Reference

This Bosch lambda sensor replaces the following OEM part numbers:

0258007351 (Bosch), 021906262B, 06A906262AN, 06A906262BH, 07C906262R, 077906265AB, 077906265AC, 1K0998262D, 07C906262AS, 07A906262AT, 022906262D, 022906262E, 022906262H, 022906262J, 06A906262AF, 06A906262BC, 06A906262DK, 07C906262K, 07C906262N, 077906262, 077906262A, 077906262D, 077906262E, EGO-237 / EGO237

What is LSU4.2 Technology?

The LSU4.2 (Lambda Sonde Universal 4.2) is Bosch's advanced wideband oxygen sensor technology. Unlike traditional narrowband oxygen sensors that only detect stoichiometric air-fuel ratios (14.7:1), wideband sensors measure across the entire air-fuel ratio spectrum from rich to lean. This provides the ECU with precise, real-time data for optimal fuel control under all operating conditions, including cold start, acceleration, deceleration, and high-load situations. LSU4.2 sensors are essential for modern engines with advanced emissions control systems and are commonly used in performance applications requiring accurate air-fuel ratio monitoring.

Common Symptoms of Faulty Lambda Sensors

• Check engine light illuminated (P0130-P0167, P2195-P2198 codes)
• Poor fuel economy and increased fuel consumption
• Rough idle or engine hesitation
• Failed emissions test
• Loss of power during acceleration
• Engine misfires or stumbling
• Strong fuel odor from exhaust
• Black smoke from exhaust pipe
• Catalytic converter damage or failure
• Reduced engine responsiveness

Why Choose Genuine Bosch Lambda Sensors?

Bosch invented the lambda sensor in 1976 and continues to set the industry standard for oxygen sensor technology. Genuine Bosch lambda sensors are designed to meet or exceed original equipment specifications, ensuring accurate readings, reliable performance, and long service life. As a world-leading automotive supplier and original equipment manufacturer for VW, Audi, and other major automakers, Bosch sensors are built to exacting standards with precision engineering and quality materials. The LSU4.2 technology represents the pinnacle of wideband sensor design, providing superior accuracy and durability for demanding applications.

Installation Notes

Professional installation is recommended for best results. Lambda sensor replacement requires proper tools including an oxygen sensor socket, anti-seize compound for the threads, and careful handling to avoid damaging the sensor element. Always install the sensor in the correct location as specified for your vehicle. The sensor connector must be properly secured and protected from heat and moisture. Never use excessive force when installing or removing lambda sensors, as this can damage the threads in the exhaust manifold or pipe. Wideband sensors are particularly sensitive and require careful handling.

Why Choose LM15 Motorsport?

We supply genuine Bosch lambda sensors with fast shipping across Australia. Every sensor is carefully inspected to ensure you receive an authentic Bosch component for reliable engine performance and emissions control. Our team can provide expert advice on sensor selection and installation for your specific vehicle or performance application.

Need help with fitment or installation? Contact our expert team for advice specific to your VW or Audi vehicle's lambda sensor requirements or performance tuning needs.