Accurately diagnose engine health with this professional TU-21 compression and cylinder leak down tester kit. The dual-gauge design simultaneously displays cylinder pressure and leak rate, giving mechanics and DIYers a complete picture of engine condition — from worn piston rings to leaking valves — without guesswork.
Key Features
2-in-1 Diagnostic Kit – Includes both a gasoline engine compression tester and a dual-gauge cylinder leak down detector
Dual Gauge Display – Simultaneously shows input pressure value and cylinder leak rate for fast, accurate diagnosis
Pressure Regulating Valve – Pull to adjust input air pressure from compressor; push to lock — simple and precise
Universal Push-On Connectors – Straight and angled types; no threading into spark plug wells required; fits nearly all gasoline engines
Aluminum & Rubber Construction – Durable, lightweight materials built for professional shop use
Carrying Case Included – Keeps all components organized, protected, and ready for the next job
Wide Vehicle Compatibility – Suitable for cars, motorcycles, trucks, and most gasoline-powered internal combustion engines
Specifications
Spec
Detail
Model
TU-21
Material
Aluminum and Rubber
Dimensions
28.5 × 21 × 7.5 cm
Gauge Type
Dual gauge (pressure + leak rate)
Connectors
Universal push-on (straight & angled)
Compatible Engines
Gasoline / petrol engines
Includes
Compression tester, leak down tester, carrying case
Use Cases
Diagnosing low compression in car or motorcycle cylinders
Identifying worn piston rings, leaking valves, or blown head gaskets
Pre-purchase engine inspection on used vehicles
Routine engine health checks in professional auto shops
Motorcycle engine diagnostics before and after rebuilds
