FITMENT
- 2010-Present Cummins Volvo, Peterbilt, Mack, International, Freightliner, Kenworth with the ISX15 CM2250 / CM2350 engines.
DESCRIPTION
Product Overview
- Sticking EGR valves, severe soot coking, and internal cooler failures cause excessive maintenance downtime and costly repairs on Cummins ISX15 CM2250 and CM2350 engines. Standard Stage 1 block-offs only cover surface ports, leaving internal cooler passages vulnerable to residual leaks and pressure loss.
- Fully secure your engine’s top end with this heavy-duty ISX15 Stage 2 EGR Plug Kit. Designed to completely seal off all EGR valve, crossover, and cooler passages after component removal, this kit eliminates internal coolant leak risks, prevents boost/exhaust leaks, and delivers long-term reliability for demanding long-haul applications.
Key Features
- Combines anodized, CNC precision-machined surfaces for flat, corrosion-resistant sealing across every intake passage.
- Shields the engine and drops EGTs by keeping sticky carbon soot off the intake valves and stopping coolant from reaching the cylinder walls.
- Seals both the EGR valve and EGR cooler ports completely with precision block plates and high-pressure threaded plug fittings.
- Suits turbo-delete conversions, making it the go-to choice for trucks running a non-VGT aftermarket turbo or a full emissions-bypass setup.
FAQ
Q: What is the difference between a Stage 1 and a Stage 2 hardware kit for the Cummins ISX15?
A: Stage 1 kit generally consists of basic block-off plates that leave the stock EGR cooler in place. This Stage 2 kit includes the necessary block-off plates AND coolant bypass hardware, allowing you to completely seal off or remove the stock cooler assembly from the coolant loop.
Q: How do I identify whether my ISX15 engine is a CM2250 or CM2350 model?
A: Check the engine data tag located on the side of the front gear housing cover or ECM door. CM2250 modules were typically used from 2010 to 2013, while CM2350 modules were introduced in 2013/2014 and continue into newer model years.
Q: Will this kit prevent internal coolant loss on my ISX15 truck?
A: Yes! A cracked factory ISX15 EGR cooler is one of the most common causes of unexplained coolant loss and high crankcase pressure. Installing this kit closes off the cooler path, eliminating cooler-related coolant consumption entirely.
Q: Is this 2010–Present kit compatible with my CM870 or CM871 truck?
A: No—while all share the 15.0L Cummins ISX platform, hardware designs differ by generation: CM870 (2002–2007) requires dual-cooler plates, CM871 (2007–2010) needs single-cooler plates.
