ECUMaster

Wideband O2 Kit with Bosch LSU 4.9 Sensor

$139.00

SKU: EMS-BOSCH-4.9-KIT

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The ECUMaster Wideband O2 Kit is engineered to integrate seamlessly with ECUMaster's EMU and EMU Black engine management systems. This kit allows users to leverage the internal wideband oxygen sensor controller for precise air-fuel ratio (AFR) monitoring, a critical component for achieving optimal engine performance and effective tuning. At the heart of this kit is the reliable and accurate Bosch LSU 4.9 wideband oxygen sensor, known for its high-resolution data output. The included 6-foot sensor harness is constructed with high-temperature fiberglass-reinforced sheathing to withstand demanding engine bay conditions. It terminates with Deutsch and FCI SICMA 2.8 terminals, ensuring a secure and robust connection. This universal kit is an essential tool for tuners and performance enthusiasts looking to gain critical insights into their engine's combustion process. Accurate AFR data is fundamental for maximizing power output, improving fuel efficiency, and preventing engine damage.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandECUMaster
Part NumberEMS-BOSCH-4.9-KIT
CategoryIgnitions and Electrical

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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