Description

Caterpillar C15 Low Compression 16:1 Conversion Inframe Rebuild Kit

Thinking about converting your twin turbo C15 to a single turbo? Start here.

If you’re working on a Caterpillar C15 Acert engine and planning to switch from a twin turbo setup to a single turbo, this is the rebuild kit you’ll want in your toolbox.

The McBee Low Compression Inframe Conversion Kit is designed specifically to drop your engine’s compression from 18:1 down to 16:1—the sweet spot for single turbo applications. Lowering the compression helps reduce combustion temps, which is especially important when you’re tuning for more power or improving reliability in high-heat environments.

What sets this kit apart? McBee’s signature steel-welded pistons. These aren’t your average pistons. They’re built tough to handle serious power, high cylinder pressures, and extended engine life.

Why Choose This Kit?

Perfect for Single Turbo Conversions
This kit is the go-to choice for drivers converting their C15 from twin turbo to single turbo. It’s been used in countless builds with excellent results.

Lower Compression = Cooler Running Engine
Dropping to 16:1 compression helps reduce EGTs (Exhaust Gas Temperatures), minimizes engine stress, and gives you more room to tune.

McBee-Quality Components
From steel-welded pistons to precision-fit liners and gaskets—everything in this kit is built for durability and trusted by diesel professionals.

Complete Inframe Solution
No guesswork. You get everything needed to overhaul the internals of your engine—all in one package.

What’s Inside the Kit?

• 6 x 16:1 Compression Steel Pistons

• 6 x Piston Ring Sets

• 6 x Piston Pins & Retainers

• 6 x Cylinder Liners

• Rod Bearings

• Main Bearings

• Thrust Washers

• Inframe Gasket Set

• Seals, O-Rings, and More

Why convert from 18:1 to 16:1 compression on a C15 Acert?

Great question! Lowering the compression makes the engine run cooler and smoother, especially when switching to a single turbo. It also opens the door for safer tuning and better turbo efficiency.

Is this the right kit for a twin turbo to single turbo swap?

Yes—this kit is built exactly for that purpose. If you’re upgrading or simplifying your setup, this 16:1 conversion rebuild kit is a solid foundation.

Will I need other parts for the single turbo conversion?

You will. This kit covers the internal engine components—you’ll still need to source a compatible turbo, manifold, and possibly reprogram or tune your ECM.

Can I use this with stock injectors and fuel system?

Yes, but if you’re chasing power, upgrading your fuel system and turbo setup will help maximize the benefits of this lower compression ratio.

Who is McBee, and why are their pistons better?

McBee is a well-known name in the diesel engine parts industry. Their steel-welded pistons are stronger and more heat-resistant than cast pistons—great for performance and reliability.

Why Buy From Heavy Duty Kits?

We’re more than just an online parts store—we’re diesel people. Whether you’re a shop owner, fleet manager, or just wrenching on your own rig, we’re here to help.

• Fast, Nationwide Shipping

• Talk to Real Diesel Experts

• Top Brands Like McBee

• Great Prices Without Cutting Corners

Still have questions? Give us a call or use live chat—we’ll help you make the right call for your build.