Caterpillar C15 ACERT Inframe Rebuild Kit 16:1 Low Compression – Piston 3466615 (MXS, NXS, BXS, SDP)

Interstate-McBee Caterpillar C15 ACERT Low Compression Conversion Kit — 16:1 CR (Piston 3466615)

Fits ESN Prefixes: MXS / NXS / BXS / SDP

Engineered by Interstate-McBee, a trusted American manufacturer with decades of experience in heavy-duty diesel components, this Low Compression Conversion Kit is specifically designed to convert C15 ACERT engines from the original 18:1 compression ratio to a more durable 16:1 configuration.

Reducing compression significantly lowers peak cylinder pressures and internal engine stress — a critical advantage for high-mileage engines operating under heavy loads. The result is improved durability, reduced risk of catastrophic failure, lower operating temperatures, and enhanced long-term reliability in severe-duty applications.

This kit is commonly used when converting a Twin Turbo ACERT (compound turbo) setup to a Single Turbo configuration, making it the preferred solution for fleets and rebuilders seeking simplicity, reliability, and reduced maintenance costs.

At the core of this kit are heavy-duty one-piece steel pistons, engineered to withstand extreme combustion forces while delivering superior strength, stability, and longevity compared to traditional multi-piece piston designs.

 Key Features

✔ 16:1 Low Compression Design
Reduces cylinder pressure, heat, and internal stress to extend engine life

✔ Twin Turbo → Single Turbo Conversion Ready
Ideal for de-mandating compound turbo systems

✔ One-Piece Steel Pistons
Maximum durability with superior resistance to cracking under extreme conditions

✔ Complete In-Frame Rebuild Solution
Allows engine rebuild without removal — saving time and labor costs

✔ Heavy-Duty Performance & Reliability
Manufactured to meet or exceed OEM specifications for on-highway and industrial applications

Why Choose Interstate-McBee?

Interstate-McBee is a well-established American brand known for producing high-quality aftermarket diesel engine components. Their products are engineered with precision machining, strict quality control, and proven field performance, making them a trusted choice among professional rebuilders, fleets, and repair shops.

Unlike generic alternatives, Interstate-McBee components are built to deliver consistent reliability, reduced downtime, and long service life in demanding environments.