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This premium LSU4.9 wideband oxygen sensor is a direct-fit replacement for the following part numbers and aftermarket high performance wideband kits:
- Bosch: 0258017025
- AEM: 30-2004
- Autometer: 2243
- FAST: 170408
- GM: 12575657
- PLX Devices: Type B
- Dynojet Wideband Commander: 48292001
- AC Delco: 213-1572
- Motec: 57005Superseded Part Numbers: 57005, 30-2004, 2243, 170408, 48292001, 12575657, 213-1572
Product OverviewOur LSU4.9 wideband air-fuel sensor delivers precision oxygen measurement for exhaust systems, far exceeding the functionality of standard O2 sensors. Unlike regular O2 sensors that only detect rich/lean fuel mixtures, this wideband sensor provides a proportional signal to your vehicle’s ECU based on exact exhaust oxygen levels, ensuring optimal air-fuel ratio calibration for high performance engines.Key Premium Features✅ Direct-Fit Drop-In Replacement: Exact match for the original Bosch LSU4.9 sensor in most aftermarket wideband kits, no modification required for installation✅ Precision Sensing: Advanced wideband sensing element for exact air/fuel ratio measurement, critical for high performance engine tuning✅ OE-Grade Construction: Terminated with original equipment (OE) connectors and harness for a secure, reliable electrical connection✅ Sufficient Wire Length: Overall wire length meets standard installation requirements, easy to establish stable connection✅ Longer Service Life: Robust sensor design with seared protection tube (100% functionally tested) for enhanced durability and heat resistance✅ Installation Ready: Threads pre-coated with anti-seize compound to prevent seizing and simplify installationFitment Note
Designed for aftermarket high performance wideband kits (compatible with most popular brands on the market). Perfect for engine tuning, performance upgrades, and exhaust system calibration to maintain optimal air-fuel efficiency.
