AutoMeter Cobalt 52mm Mechanical Boost / Vacuum Gauge | 30 PSI | Patented Bourdon Tube Movement | 1/8" NPT | No Electrical Hookup Required | Includes Fittings & Nylon Line Kit

The AutoMeter Cobalt 52mm Mechanical Boost/Vacuum Gauge (ATM6103) is a 30 PSI mechanical boost and vacuum gauge in AutoMeter's Cobalt series — the industry standard in mechanical boost gauges, found in more performance builds than any other. Using AutoMeter's patented, high-precision Bourdon tube meter movement, the Cobalt mechanical boost gauge delivers a level of accuracy and durability that no other gauge on the market can match. A simple 1/8" NPT pressure connection requires no electrical hookup for operation — the mechanical Bourdon tube movement reads boost and vacuum pressure directly from the intake manifold pressure line, with no wiring, no sensors, and no power supply required. Includes 1/8" NPT fittings and nylon line kit for a complete installation. AutoMeter is the most respected performance gauge manufacturer in North America — the brand trusted by professional racers, engine builders, and performance enthusiasts worldwide for accurate, reliable instrumentation.

Key Features:

• Patented Bourdon tube meter movement — AutoMeter's patented, high-precision Bourdon tube movement is the industry standard for mechanical boost gauge accuracy and durability — a proven mechanical movement that directly translates intake manifold pressure into needle deflection with no electrical components in the signal path
• 30 PSI range — reads from vacuum (negative pressure) through 30 PSI of boost — correct for a wide range of turbocharged and supercharged performance applications running up to 30 PSI of boost
• 52mm diameter — 52mm gauge diameter — the standard performance gauge size — correct for 52mm gauge pods, pillar pods, and gauge clusters
• No electrical hookup required — the mechanical Bourdon tube movement requires no electrical connection for operation — no wiring, no sensors, no power supply — a simple 1/8" NPT pressure line connection is all that is required
• 1/8" NPT pressure connection — standard 1/8" NPT fitting — connects directly to the intake manifold or boost source via the included nylon line and fittings
• Cobalt series — AutoMeter's Cobalt series gauge — a clean, performance-oriented gauge face design with clear markings and a professional appearance
• Includes fittings & nylon line kit — complete installation kit included — 1/8" NPT fittings and nylon pressure line for a complete, ready-to-install boost gauge solution
• AutoMeter quality — manufactured by AutoMeter, the most respected performance gauge manufacturer in North America

Mechanical vs. Electronic Boost Gauge — Why Mechanical:

• Mechanical (this gauge): The Bourdon tube movement reads pressure directly — no electrical signal path, no sensor, no wiring. The needle responds instantly to pressure changes. No power supply required. The most accurate and reliable boost gauge technology for applications where simplicity and accuracy are the priority.
• Electronic: Uses a pressure sensor and electrical signal to drive the gauge needle or display. Requires wiring and a power supply. Can be located further from the boost source. May have a slight signal delay depending on the sensor and gauge electronics.

For most performance builds where the gauge is mounted within reach of a nylon pressure line from the intake manifold, the mechanical Bourdon tube gauge is the correct choice for accuracy, reliability, and simplicity.

Specifications:

• Brand: AutoMeter
• Part Number: ATM6103
• Barcode: 46074061035
• Series: Cobalt
• Diameter: 52mm
• Type: Mechanical boost / vacuum
• Range: Vacuum to 30 PSI boost
• Movement: Patented Bourdon tube
• Connection: 1/8" NPT
• Electrical: None required
• Includes: 1/8" NPT fittings and nylon line kit
• Weight: 0.7 lbs

Fitment Information:

• Universal — correct for any turbocharged or supercharged application with a boost source accessible via 1/8" NPT fitting and nylon pressure line
• 52mm diameter — verify your gauge pod or mounting location accepts a 52mm gauge before ordering
• Note: The nylon pressure line must be routed away from heat sources — do not route the nylon line near the exhaust manifold, turbocharger, or other high-heat components. Use a heat-resistant line or heat shielding if routing near heat sources is unavoidable.

What's Included:

• AutoMeter Cobalt 52mm mechanical boost/vacuum gauge (ATM6103)
• 1/8" NPT fittings
• Nylon pressure line kit

Installation Notes:

• Connect the 1/8" NPT fitting to a boost source on the intake manifold or charge pipe — a port after the throttle body is the correct boost source location for a boost/vacuum gauge
• Route the nylon pressure line from the boost source to the gauge — route away from heat sources and moving components — secure the line with clips or ties to prevent contact with hot or moving parts
• Do not route the nylon pressure line near the exhaust manifold, turbocharger, or other high-heat components — use heat-resistant line or heat shielding if routing near heat sources is unavoidable
• Verify the 1/8" NPT fitting is correctly sealed at the boost source — a boost leak at the fitting will cause incorrect gauge readings and a boost leak in the intake system
• Mount the gauge in a 52mm gauge pod, pillar pod, or gauge cluster — verify the mounting location provides a clear view of the gauge face from the driver's seat

Why AutoMeter?

AutoMeter is the most respected performance gauge manufacturer in North America — the brand trusted by professional racers, engine builders, and performance enthusiasts worldwide for accurate, reliable instrumentation. AutoMeter's patented Bourdon tube mechanical boost gauge movement is the industry standard — found in more performance builds than any other gauge, trusted for its accuracy, durability, and simplicity. For performance builds where a reliable, accurate mechanical boost gauge from the industry's most trusted gauge manufacturer is required, ATM6103 is the correct choice.

Perfect For:

• Turbocharged and supercharged performance builds where a reliable, accurate 52mm mechanical boost/vacuum gauge from the industry's most trusted gauge manufacturer is required — AutoMeter's Cobalt series Bourdon tube movement delivers the accuracy and durability that has made it the industry standard
• Performance builds where a simple, no-electrical-hookup boost gauge solution is preferred — the mechanical Bourdon tube movement requires only a 1/8" NPT pressure line connection for a complete, accurate boost gauge installation
• Owners who want AutoMeter's proven Cobalt series gauge quality with a complete installation kit — 1/8" NPT fittings and nylon line included for a ready-to-install mechanical boost gauge solution

Note: Route nylon pressure line away from heat sources — do not route near exhaust or turbocharger. Verify 1/8" NPT fitting is correctly sealed. Verify 52mm gauge pod compatibility before ordering. Connect boost source after throttle body for correct boost/vacuum reading.