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Marshall LS00100 Silver Dial 1.5
Marshall LS00100 Silver Dial 1.5
Marshall LS00100 Silver Dial 1.5
Marshall LS00100 Silver Dial 1.5
Marshall LS00100 Silver Dial 1.5
Marshall

Marshall LS00100 Silver Dial 1.5" Fuel Pressure Gauge

★★★★★4.5 (495 reviews)

A compact 1.5-inch liquid-filled fuel pressure gauge with stainless steel construction for accurate 0-100 PSI readings.

$21.99*
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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 LS00100 is a 1.5-inch analog fuel and oil pressure gauge designed for reliable monitoring in automotive and mechanical applications. The gauge reads from 0 to 100 PSI on a silver dial with a red pointer for clear visibility against the face. Its stainless steel case and bezel provide durability and corrosion resistance, making it suitable for engine compartments and other demanding environments where exposure to heat, fluids, and vibration is common.

The liquid-filled case is a key feature, dampening needle oscillation caused by engine vibration and pressure pulsations so you get a steady, readable measurement rather than a bouncing pointer. A 1/8" NPT center back connection provides a standard thread size compatible with widely available fittings and adapters. The included Easy-Vent plug allows you to release any trapped air from the case — a practical detail that maintains measurement accuracy over the life of the gauge, particularly after temperature fluctuations or initial installation.

Key Features

1.5" Fuel/Oil Pressure Gauge, Silver Dial

0-100 PSI, Silver Dial, Red Pointer

Liquid filled Stainless Steel Case and Bezel

1.5" dial, 1/8" NPT center back connection

Easy-Vent Plug for accurate readings every time

Specifications

Brand
Marshall
Model
LS00100
Gauge Type
Fuel/Oil Pressure
Dial Size
1.5"
Pressure Range
0-100 PSI
Connection
1/8" NPT Center Back
Case Material
Stainless Steel
Bezel Material
Stainless Steel
Fill
Liquid Filled
Dial Color
Silver
Pointer Color
Red
Special Features
Easy-Vent Plug

Pros & Cons

👍 Pros

  • Liquid-filled case dampens vibrations for stable, readable needle movement in engine environments
  • Stainless steel case and bezel resist corrosion and withstand harsh under-hood conditions
  • Compact 1.5-inch dial size fits in tight mounting locations where larger gauges cannot
  • Easy-Vent plug allows quick air release to maintain reading accuracy over time

👎 Cons

  • 1.5-inch dial is small and may be difficult to read at a glance from a distance
  • 100 PSI maximum range may not be sufficient for high-pressure fuel injection systems
  • Center back connection only — no bottom or panel mount option without an adapter fitting
  • Silver dial with red pointer may be less visible in low-light conditions without supplemental lighting

Frequently Asked Questions

The liquid filling dampens vibrations and pressure pulsations, which keeps the needle steady and allows accurate readings in high-vibration environments such as engine compartments.
It uses a 1/8" NPT (National Pipe Thread) center back connection, which is a standard fitting size for fuel and oil pressure applications.
The Easy-Vent plug allows you to release trapped air from the gauge case, which can accumulate during temperature changes or shipping. Venting ensures the gauge reads accurately and the needle moves freely.
Yes, the gauge is rated for both fuel and oil pressure monitoring within its 0-100 PSI range.

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