FAST · New
FAST O2 Sensor Processor Kit For X
MPN 170577 · Store SKU fst170577
Supplier stock checked 11/7/2026, 1:03:18 PM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
FAST engineers have developed a kit that makes it easy for anyone to measure an engine?s air/fuel ratio. This plug and play universal O2 sensor processing kit allows your data acquisition system or dyno software to record and display air/fuel ratios. Since it uses fully automatic sensor calibration, there?s no need for manual ?free-air? calibration that competitive units require. Additionally, each sensor kit is a standalone unit, so using multiple kits for measuring all your engine?s cylinders is easy. Compatible with FAST Digital Air/Fuel Meters. This auxiliary wideband module plugs directly into the analog connnector on the XFI Harness. XFI Wide-Band Auxiliary Air/Fuel Ratio Module Kit
Manufacturer fitment & guides
Check 170577 against the manufacturer’s application information below.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- California Proposition 65: Y
