OTC Vacuum/Pressure Gauge Kit 5613 – 3-1/2" Dual-Function Gauge, Blow-Molded Case

OTC 5613 is a handheld vacuum and low-pressure gauge kit designed to quickly identify vacuum leaks, low-pressure fuel issues, and other engine drivability problems.

This compact kit combines a large dual-purpose gauge with a selection of adapters and hose fittings housed in a rugged blow-molded case, giving technicians and DIYers an easy way to diagnose leaks, measure manifold vacuum, and verify low-pressure fuel system performance without specialist equipment.

How does the OTC 5613 help find vacuum leaks and cracked lines?

The 3-1/2" dual-function gauge reveals pressure and vacuum behavior in a system so you can see drops, spikes, or steady loss that indicate leaks or damaged hoses. The kit includes multiple adapters to attach to vacuum ports and hard-to-reach fittings for accurate readouts.

• Large, easy-to-read 3-1/2" dial with chrome bezel and protective boot
• Adapters for common vacuum ports and low-pressure fittings
• Hoses long enough to test in cramped engine bays
• Visible rear hook for hands-free gauge viewing

Can this gauge test low-pressure fuel systems reliably?

Yes — the OTC 5613 reads low fuel pressures and vacuum in the ranges mechanics need for common diagnostics. It provides multiple units on one dial so you can interpret results quickly and compare against manufacturer specifications.

• Pressure scales include 0–15 psi and 0–100 kPa
• Vacuum scales include 0–30 in. Hg and 0–70 cm Hg for international specs
• Dual vacuum/pressure capability removes the need for separate tools
• Durable protective boot resists bumps in the shop

What accessories are included and how is the kit stored?

The tester ships with a set of adapters and hoses to tackle most common automotive fittings, all organized inside a sturdy blow-molded hard case. The removable lid stores an instruction chart so you can reference scale conversions and basic troubleshooting at the bench or roadside.

• Assorted adapters to fit typical vacuum and low-pressure fuel fittings
• Blow-molded case with removable lid for secure transport and storage
• Instruction chart printed on the inside lid for quick reference
• Rear hook on the gauge for hanging at eye level during tests

How does the gauge read and what units does it show?

The dial displays both vacuum and pressure on separate scales so you can interpret engine behavior without switching instruments. Readings are presented in common workshop units to match service manuals and international specifications.

• Vacuum: 0–30 in. Hg and 0–70 cm Hg
• Pressure: 0–15 psi and 0–100 kPa
• Clear markings and chrome bezel improve legibility under shop lighting
• Protective boot reduces risk of damage when bumped

Who is this for? The OTC 5613 is built for professional technicians, service shops, and serious DIYers who need a simple, durable tool to diagnose vacuum leaks, assess low-pressure fuel systems, and pinpoint drivability faults. It’s especially useful when you want reliable numeric readouts, field portability, and a tidy storage solution that keeps adapters and hoses organized between jobs.