Choosing the Right Rebuild Kit by Compression Ratio

Compression ratio is one of the most important factors when selecting an overhaul kit. It impacts combustion temperature, torque curve, fuel efficiency, and emissions. The KTA 19 engine uses three common compression ratios depending on CPL and intended use:

13.9:1 Compression Ratio

This lower compression variant is commonly used in continuous-duty industrial or marine engines where lower combustion heat reduces component stress. Ideal for applications running at constant RPM or high altitude.

Compatible CPLs: 951, 1170, 1253, 1319, 1430, 1455, 1456, 1457, 1458, 1499, 2635, 2636, 4150, 4151, 4153

14.5:1 Compression Ratio

This medium compression ratio provides a balance between fuel economy and power. Common in mixed-use industrial equipment or generator sets where engines must ramp up to load quickly without over-stressing internal parts.

Compatible CPLs: 184, 245, 251, 292, 386, 441, 442, 447, 475, 520, 672, 739, 801, 885, 886, 888, 1190, 2039, 2634, 3849

15.5:1 Compression Ratio

This is the high-compression variant used in high-output KTA configurations. It increases power density and thermal efficiency but generates more combustion pressure and heat. Common in applications requiring high torque from idle or extreme load environments like mining or oilfield pumping.

Compatible CPLs: 153, 159, 171, 183, 185, 213, 219, 232, 274, 290, 291, 293, 297, 302, 334, 379, 385, 398, 415, 438, 439, 440, 444, 445, 446, 474, 584, 640, 724, 884, 952, 969, 2184

What’s Included in a Cummins KTA 19 Rebuild Kit?

Every Diesel Pro Power rebuild kit is engineered for inframe service and includes all the core components required to restore the cylinder and bottom end:

• Pistons (matched to compression ratio)

• Piston Rings

• Cylinder Liners

• Main Bearings

• Rod Bearings

• Thrust Washers

• Top Gasket Set

• Lower Gasket Set

• Oil Seals

• Liner O-Rings and Shims

All components are sourced from OEM-quality manufacturers with proven performance in heavy-duty environments.

Additional KTA 19 Engine Components to Support Your Rebuild

Rebuilding your engine offers an ideal opportunity to service critical systems that support reliability and performance. Here are a few essential components and tools available for the KTA 19:

Piston Cooling Nozzles

High-performance diesel engines like the KTA use piston cooling nozzles to spray oil onto the underside of the pistons, preventing overheating. Replacing worn nozzles during an overhaul ensures even thermal regulation and longer piston life.

• Compatible with KTA 19 and QSK19 engines

• 6 required per engine

Turbo Mounting Gasket

If you’re removing or replacing the turbo during your rebuild, it’s essential to install a new turbo mounting gasket. This ensures proper sealing and prevents boost leaks.

• For water-cooled turbo setups only

Exhaust Manifold Outlet Gasket

A critical component for maintaining exhaust backpressure and preventing soot blow-by. Replacing this gasket during overhaul ensures safe operation and better exhaust flow management.

Commonly Paired Filters and Service Tools

To fully complete an inframe rebuild, Diesel Pro Power also offers the following items tailored for the KTA 19:

• Oil Filter: Spin-on style, optimized for extended drain intervals

• Fuel Filter / Water Separator: Protects injectors from water and particulates

• Feeler Gauge: .002” to .025” range for precise valve lash adjustment

• Piston Ring Tool: Prevents ring damage during piston installation

• Fuel Filter Removal Wrench: Compatible with Cummins and Detroit Diesel filters

• Oil Filter Removal Wrench: Adjustable to large-format spin-on filters

• Radiator Cleaner: Flush out scaling or debris from cooling passages

• Temperature Switch: Critical for temperature-based warning or shutdown systems

Replacing filters and gaskets during a rebuild reduces the risk of contaminating new internals and maximizes longevity post-installation.

Gauges and Instrumentation

Upgrading your gauges during a rebuild is a smart preventative move. Cummins KTA 19 engines are typically paired with:

• Mechanical Oil Pressure Gauges

• Coolant Temperature Gauges

• Voltage Meters

• Alarm-equipped Gauges for Remote Monitoring

Gauges are available in both 12V and 24V configurations.

Trusted by Heavy-Duty Operators Worldwide

With over 40,000 satisfied customers globally, Diesel Pro Power has become the go-to source for Cummins KTA 19 rebuild kits and engine parts. We ship fast, stock what we sell, and provide customer service that speaks your language—literally and technically.

Whether you’re overhauling a marine generator, oilfield engine, or industrial prime mover, our kits deliver the exact fit, form, and function you need to put your Cummins KTA 19 back in service with confidence.