Autometer 2-5/8 Ultra-Lite Oi

OVERVIEW

Monitoring the lifeblood of your air-cooled powerplant is the single most important task for any serious Volkswagen enthusiast, and the AutoMeter 2-5/8 inch Ultra-Lite Oil Pressure Gauge (ATM4423) is the gold standard for precision and visibility. Whether you are screaming across the dunes in a sand rail or cruising the strip in a slammed Cal-look Beetle, knowing your exact oil pressure is the difference between a successful weekend and a catastrophic engine failure. Air-cooled engines rely on oil not just for lubrication, but as a critical cooling component; as temperatures rise, oil viscosity thins, making a high-quality mechanical gauge an absolute necessity. The Ultra-Lite series features a lightweight aluminum construction that is a favorite in the motorsports world, offering a sleek, satin anodized aluminum face that perfectly complements a custom dash or a pillar pod setup.

The 2-5/8 inch diameter face provides a significantly larger viewing area than standard 2-1/16 inch gauges, making it much easier to read at a glance when you are bouncing through a rough section of trail or shifting at high RPM. This mechanical gauge operates with a Bourdon tube movement, providing unmatched accuracy and a lightning-fast response time that electronic sensors simply cannot match. It comes equipped with a bright red fluorescent pointer and white incandescent lighting, ensuring that you can keep an eye on your engine''s vitals regardless of the lighting conditions. When you install an AutoMeter Ultra-Lite gauge from Appletree Auto, you aren''t just adding a part to your VW; you are installing decades of racing heritage and American-made reliability that ensures your engine stays protected for the long haul.

FITMENT

This universal 2-5/8 inch gauge is designed for custom dash installations and is a staple in the following air-cooled applications:

• Volkswagen Type 1: Beetle, Bug, and Super Beetle (All Years)
• Volkswagen Type 2: Bus, Transporter, Kombi, and Microbus (1950-1979)
• Volkswagen Type 3: Fastback, Squareback, and Notchback (All Years)
• Volkswagen Karmann Ghia: Coupe and Convertible (All Years)
• Volkswagen Type 181: The Thing (1973-1974)
• Custom Builds: Dune Buggies, Sand Rails, Baja Bugs, and Manx-style bodies
• Note: Requires a metric-to-NPT adapter (typically M10x1.0 to 1/8 inch NPT) for installation into the factory VW engine case oil pressure relief port.

SPECS

• Product Brand: AutoMeter
• Series: Ultra-Lite
• Gauge Type: Oil Pressure (Mechanical)
• Diameter: 2-5/8 Inches (66.7mm)
• Range: 0-100 PSI
• Face Color: Silver (Satin Anodized)
• Bezel Color: Brushed Aluminum
• Pointer Color: Fluorescent Red
• Lighting: White Incandescent (Bulb and Socket Assembly included)
• Fitting Size: 1/8 inch NPT Male to 1/8 inch Compression Fitting
• Included Hardware: 1/4 inch NPT Adapter, 10 ft. Nylon Tubing, Mounting Hardware
• Weight: 0.75 lbs

PRO TIPS

1. Protect Your Oil Line from Heat and Vibration

Since this is a mechanical gauge, it uses a nylon line to carry oil pressure directly to the back of the instrument. When routing this line through your VW''s engine tin and along the chassis, always use rubber grommets to prevent the metal edges from vibrating through the plastic. Furthermore, ensure the line is kept far away from the exhaust headers or heater boxes. If the nylon line melts, you will lose oil pressure and dump your engine''s oil onto the ground in seconds. For high-performance off-road builds, we highly recommend upgrading to a stainless steel braided -3AN line for maximum durability.

2. Use a T-Fitting for Dual Monitoring

Most air-cooled VW owners want to keep their factory "idiot light" on the dashboard functional while adding the precision of an AutoMeter gauge. To do this, you will need a special T-fitting that threads into the M10x1.0 port on the engine case. This allows you to thread the factory oil pressure switch into one side and the AutoMeter 1/8 inch NPT adapter into the other. This setup gives you the best of both worlds: a bright red warning light for immediate failures and a precision gauge for constant monitoring of engine health.

3. Bleed the Air for Steady Readings

If you notice the needle on your new Ultra-Lite gauge is "fluttering" or jumping erratically, there is a high probability that you have an air bubble trapped in the line. While air in the line won''t necessarily affect the peak pressure reading, it acts as a cushion that can cause needle oscillation. To fix this, slightly loosen the compression fitting at the back of the gauge while the engine is running (place a rag behind it first!) until a small amount of oil escapes, then tighten it immediately. This purges the air and provides a solid column of oil for a smooth, steady needle sweep.