AutoMeter  |  SKU: ST3404

Autometer Stack 52mm Pro-Control Wideband Air/Fuel Ratio (Lambda) Gauge - White

Regular price USD 50453

Can I pick up my order or have it installed at your shop?

Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.

How do I know if this part fits my vehicle?

Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.

What if I need to return a product or it’s defective?

Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)

What's the lead time on custom or fabricated parts?

Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.

The Stack 52mm Pro-Control Wideband Air/Fuel Ratio (Lambda) Gauge in White adds a Pro-Control output that can automatically control other power systems based on specific lambda conditions – on top of Stack’s real-time AFR/lambda readout.

Why Choose the Stack Pro-Control Wideband?

  • Pro-Control output – automatic control of other power systems based on lambda.
  • Closed-loop feedback – 0-5Volt analogue and serial outputs feed a data-logger, ECU or other device for improved mapping.
  • Custom scaling – calibrate for specialty fuels and maximum resolution.
  • Driver alerts – inbuilt peak lean value recall and a programmable alarm.
  • Readable in any light – dimmable dual digital red numeric and multi-colour radial LED displays with automatic intensity adjustment.
Kit Includes
  • Pro-Control wideband gauge (white)
  • Wiring harness
  • Bosch LSU4.9 sensor
Notes
  • Display reads air/fuel ratio or lambda (user-selectable).
  • Manual dimming may be enabled via switch connection to the illumination wire on the loom.

SKU: ST3404

⚠ WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov

Questions? We’re Here to Help.

Have questions about upgrades for your tune? Contact FASS Motorsports and we’ll get you dialed:

Phone: 636-429-7020

Email: info@fassmotorsports.com