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Bosch LS 17121 (0 258 017 121) Wide-Band Lambda Sensor

Bosch LS 17121 Wide-Band Lambda Sensor

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ManufacturerBosch
Part numberLS 17121
Part Number 0 258 017 121
Trade Numbers LS 17121, LSU-4.9
Circuits 5
Length 830 mm
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12-month warranty
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Wide-band technology High accuracy Long service life Optimizes fuel economy Reduces emissions Direct fit installation
Product description

The Bosch LS 17121, also known by part number 0 258 017 121 and LSU-4.9, is a wide-band lambda sensor designed to ensure reliable engine operation. It plays a crucial role in maintaining fuel economy, reducing pollutant emissions, and achieving good exhaust gas values. Bosch is the inventor of the lambda sensor and offers a vast range for various vehicle types.

This sensor is essential for accurate engine management systems, contributing to efficient combustion and compliance with emission standards. Its long service life and excellent operational characteristics make it a preferred choice for automotive applications.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Bosch LS 17121 lambda sensor. Ensure your vehicle's optimal performance and environmental compliance by sourcing this critical component from us.

Technical specifications
Part Number0 258 017 121
Trade NumbersLS 17121, LSU-4.9
Circuits5
Length830 mm
PositionBefore catalytic converter
BrandBosch
Common applications
Automotive exhaust systems
Engine management
Emissions control
Performance tuning
Vehicle diagnostics
Compatible systems
Various Mercedes-Benz and Smart vehicles
Also known as
Bosch 0 258 017 121 LSU-4.9 Lambda Sensor Bosch Wide-Band Sensor
Replaces / compatible with
Replaces OE part numbers such as MERCEDES-BENZ A 004 542 86 18 and SMART A0045428618. Compatible with various Mercedes-Benz and Smart models.
Technical note
Expert tip
This sensor is designed for use before the catalytic converter and is crucial for precise air-fuel ratio control in modern engines.
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Frequently asked questions
What is the recommended change interval for the Bosch LS 17121 lambda sensor?
The recommended change interval for the Bosch LS 17121 lambda sensor is 250,000 km. Regular replacement ensures optimal engine performance and emissions control.