The ATC 4451 Diesel Compression Gauge 0‑1000 PSI is a professional-grade diagnostic tool engineered for heavy-duty diesel and automotive engine service. Featuring a full-scale range of 0-1,000 PSI (0-7,000 kPa) and equipped with a high-strength, USA hose, this gauge enables accurate cylinder compression testing on commercial trucks, off-road equipment and service fleets.
Designed for busy rebuild shops and service centres, the ATC 4451 comes equipped with a built-in compression release valve for quick resets, a clear dual-scale dial, and a rugged protective boot for extended durability. Its universal coupler and extensive hose length provide access to deep or hard-to-reach injector ports and cylinders, allowing for efficient workflow and accurate results in heavy-duty diagnostics.
Key Features & Benefits
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Full-range 0-1000 PSI compression dial, covering large-bore diesel engines.
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Heavy-duty hose and reinforced fittings for repeated professional use.
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Instant-release valve enables fast re-testing and workflow efficiency.
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Suitable for diesel trucks, engine rebuilds, fleet diagnostics and field service operations.
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Helps identify internal engine conditions such as worn piston rings, leaking valves or head gasket failures with precision.