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Marshall

Marshall LBB00100 Fuel Pressure Gauge 0-100 PSI

★★★★★4.7 (441 reviews)
1.5 inch8 inch

Marshall LBB00100 liquid-filled fuel pressure gauge delivers vibration-dampened 0–100 PSI readings in a compact 1.5" dial.

$25.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Marshall Instruments LBB00100 Fuel Pressure Gauge is a precision instrument designed for monitoring fuel pressure in performance and modified vehicles where accurate, real-time readings are essential for tuning and reliability. Covering a 0–100 PSI range, it accommodates both low-pressure carbureted systems and higher-pressure fuel-injected setups. The liquid silicone filling is a key feature, damping the needle against the rapid pulsations and mechanical vibrations inherent to automotive environments, so the reading remains steady and legible rather than bouncing erratically.

Construction quality is a priority in this gauge, with a stainless steel case that stands up to the heat, moisture, and chemical exposure common in engine bays, and brass internals that are compatible with fuel and resist corrosion over time. The 1/8" NPT center back connection is an industry-standard fitting, simplifying installation with widely available adapters and fittings. At just 1.5 inches in dial diameter, the LBB00100 is compact enough to tuck into crowded engine compartments or mount on small gauge pods where space is at a premium.

Key Features

Compact Fuel Pressure Gauge: 1.5 inch fuel pressure gauge with measurement range of 0-100 PSI for accurate fuel system monitoring

Durable Construction: Stainless steel case and bezel provide long-lasting durability and resistance to corrosion

High Visibility Design: Black dial with red pointer and liquid silicone filled for clear readings and vibration dampening

Standard Connection Size: 1.5 inch dial with 1/8 inch NPT center back connection for easy installation

Easy Vent Plug Feature: Convenient vent plug allows for accurate readings every time by releasing trapped air

Shock-Proof Performance: Liquid silicone filled construction dampens vibrations and protects against shock damage

Quality Internal Components: Brass internals ensure reliable performance and resistance to fuel system chemicals

Specifications

Brand
Marshall Instruments
Model
LBB00100
Pressure Range
0–100 PSI
Dial Size
1.5 inches
Case Material
Stainless Steel
Internal Material
Brass
Connection
1/8" NPT Center Back
Filling
Liquid Silicone Filled

Pros & Cons

👍 Pros

  • Liquid silicone filling eliminates needle flutter for stable readings in high-vibration environments
  • Stainless steel case resists corrosion from engine bay heat and moisture
  • Brass internals provide reliable fuel compatibility and long service life
  • Compact 1.5-inch dial fits easily in tight mounting locations

👎 Cons

  • 1.5-inch dial can be difficult to read at a glance from a distance
  • 0-100 PSI range may be broader than needed for low-pressure fuel systems, reducing resolution in the lower range
  • Center back mount connection limits installation orientation compared to bottom or side-mount gauges

Frequently Asked Questions

The silicone liquid filling dampens needle vibrations caused by engine pulses and vehicle movement, allowing for stable, accurate readings even under harsh operating conditions.
It uses a 1/8" NPT (National Pipe Thread) center back connection, which is the most common fitting size for aftermarket fuel pressure gauges.
The gauge features a stainless steel case for corrosion resistance and brass internals for fuel compatibility and durability.
The dial is 1.5 inches in diameter, making it compact enough to mount in tight engine bay locations or on small gauge panels.

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