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Stack Gauges

Stack Pro-Control Wideband Lambda Gauges

Not Yet Reviewed

Stack Pro-Control Wideband Lambda Gauges are the ultimate tuning aids. Dual digital and radial LED displays provide an accurate real-time readout of either the air/
Stack Pro-Control Wideband Lambda Gauges are the ultimate tuning aids. Dual digital and radial LED displays provide an accurate real-time readout of either the air/fuel ratio or lambda (user-selectable). A 0-4 V analog output can be connected to a data-logger or to an ECU to provide real-time, closed-loop feedback for improved mapping. These Stack gauges come complete with a wiring harness and include a Bosch sensor. Select the gauge face color you prefer.

Additional features:

* Programmable alarm to warn of dangerous lean condition
* Peak recall of leanest value during last run
* Suitable for all fuel types
Stack Pro-Control Wideband Lambda Gauges are the ultimate tuning aids. Dual digital and radial LED displays provide an accurate real-time readout of either the air/fuel ratio or lambda (user-selectable). A 0-4 V analog output can be connected to a data-logger or to an ECU to provide real-time, closed-loop feedback for improved mapping. These Stack gauges come complete with a wiring harness and include a Bosch sensor. Select the gauge face color you prefer.

Additional features:

* Programmable alarm to warn of dangerous lean condition
* Peak recall of leanest value during last run
* Suitable for all fuel types with AFR from 6:1 to 20:1 (not recommended for leaded fuel)




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Stack Pro-Control Wideband Lambda Gauges ST3403

Stack Pro-Control Wideband Lambda Gauges ST3403

Mail - In Rebate

Rebate amount based on part(s) total.

Rebate Expires: 4/30/2026

Get up to $150 back after rebate when you buy products from AutoMeter Brands! Go to: http://summitracing.com/go/atm

Get up to $150 back after rebate when you buy AutoMeter Products! Also includes Auto Gage, Dedenbear, Marine, Spek-Pro and Stack Brands. Spend $100-$199 and get $10 back. Spend $200-$449 and get $25 back. Spend $450-$699 and get $50 back. Spend $700-$999 and get $75 back. Spend $1,000-$1,499 and get $100 back. Spend $1,500 or more and get $150 back. Go to http://summitracing.com/go/atm for complete offer information. Valid on purchases made between 3/15/26 and 4/30/26. Rebate submission must be postmarked by 5/31/26. Limit one rebate per household. Allow up to 12 weeks for processing. Purchase amount is the subtotal before taxes and shipping.

Stack Pro-Control Wideband Lambda Gauges ST3403

Gauges, Pro-Control Wideband Lambda, Digital, Air/Fuel Ratio, 8.0:1-20:1 Air/Fuel Ratio Range, 2 1/16 in., Black Face, Red Numbers, Electrical, Each

Part Number: SGG-ST3403

Not Yet Reviewed

Estimated Ship Date: Monday 3/23/2026 if shipped by air

    • Mail - In Rebate

    Rebate amount based on part(s) total.

    Rebate Expires: 4/30/2026

    Get up to $150 back after rebate when you buy products from AutoMeter Brands! Go to: http://summitracing.com/go/atm

    Get up to $150 back after rebate when you buy AutoMeter Products! Also includes Auto Gage, Dedenbear, Marine, Spek-Pro and Stack Brands. Spend $100-$199 and get $10 back. Spend $200-$449 and get $25 back. Spend $450-$699 and get $50 back. Spend $700-$999 and get $75 back. Spend $1,000-$1,499 and get $100 back. Spend $1,500 or more and get $150 back. Go to http://summitracing.com/go/atm for complete offer information. Valid on purchases made between 3/15/26 and 4/30/26. Rebate submission must be postmarked by 5/31/26. Limit one rebate per household. Allow up to 12 weeks for processing. Purchase amount is the subtotal before taxes and shipping.

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Estimated Ship Date: Monday 3/23/2026 if shipped by air

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