🔥 AEM X-Series Wideband AFR Gauge (30-0300) – 52mm Digital Display

Get the accuracy your tune deserves.

The AEM X-Series Wideband is the #1 choice for tuners who demand fast, precise air/fuel ratio (AFR) and Lambda readings for turbocharged, supercharged, or all-motor setups.

Engineered with advanced digital technology, this 52mm gauge delivers lightning-fast response times, unmatched reliability, and simple 2-wire install—so you can spend less time wiring and more time tuning.

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✅ Key Features:

• 🚗 Precision AFR/Lambda Monitoring – Accurately monitor air/fuel ratios for peak performance and engine safety

• ⚡ Ultra-Fast Response Time – Industry-leading speed ensures real-time AFR readings during wide-open throttle and boost transitions

• 🔌 Easy 2-Wire Installation – No headaches. Power and ground, and you’re ready to read

• 📏 Compact 52mm Gauge Design – Clean, universal fit for most dash pods or gauge clusters

• 🔧 Compatible with most engine management systems (including Hondata, Haltech, AEM, ECUmaster, and more)

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🧠 Why It Matters:

Whether you’re street tuning or pushing max boost on the dyno, an accurate wideband is critical. The AEM 30-0300 helps prevent lean conditions, detects rich spots, and gives your tuner the data needed to dial in max power safely.

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📦 What’s Included:

• AEM X-Series Wideband Gauge (52mm)

• Bosch LSU 4.9 Wideband O2 Sensor

• Weld-in bung + sensor cable

• Installation instructions + wiring harness

• 12-Month Warranty (Sensor not covered)

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🔥 Pro-Tuner Recommended:

Thousands of shops trust the AEM 30-0300 for its speed, accuracy, and compatibility. Whether you’re running KPro, HP Tuners, or standalone ECUs, this is the go-to wideband gauge for serious performance builds.

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🚀 Summary:

The AEM X-Series Wideband (30-0300) is your first line of defense against bad tunes and blown engines. Quick to install, easy to read, and deadly accurate—this gauge belongs in every boosted or tuned car.