FITMENT
- 2010-Present Cummins Volvo, Peterbilt, Mack, International, Freightliner, Kenworth with the ISX15 CM2250 / CM2350 engines.
DESCRIPTION
Product Overview
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Capping off EGR loops on 2010+ Cummins ISX15 (CM2250/CM2350) platforms subjects open exhaust manifold connections to extreme thermal stress and intense drive pressure. Standard flat plates often warp under continuous high-temp exhaust pulsation, leading to severe drive-pressure leaks, turbo boost loss, and soot spray across the engine bay.
- Engineered for high-pressure exhaust retention, this Cummins ISX15 Heavy-Duty EGR Block Off Plate provides a rigid, high-temp seal across the factory EGR exhaust port. Machined to withstand extreme thermal expansion without warping, it contains hot-side exhaust gas, maintains maximum turbine drive pressure, and anchors your Stage 2 delete setup for long-haul reliability.
Key Features
- Machined from 6061-T6 aircraft-grade aluminum, the plate holds its shape under boost pressure without flexing.
- Laser-cut and CNC-finished to the factory EGR valve mounting port for a precise, leak-tight fit.
- Keeps boost from leaking and blocks exhaust soot from recirculating into the intake, so the charge air stays clean.
- An anodized coating guards against heat cycling, engine fluids, and corrosion for years of service.
FAQ
Q: What’s this rectangular plate mainly meant to do?
A: On 2010+ Cummins ISX15 engines, it permanently seals the intake manifold after the EGR comes off — that stops boost leaks and keeps exhaust soot from looping back into the engine.
Q: What location does this block-off plate bolt into?
A: Once the stock EGR valve assembly is off the ISX15 CM2250 or CM2350, the plate goes over the factory EGR valve mounting port / EGR exhaust connection.
Q: Will this plate help stop coolant leaks from the EGR cooler?
A: Yes — sealing the unused EGR coolant passages after the components are gone cuts down the chance of any remaining EGR connection leaking.
Q: Can this one plate stand in for the full Stage 2 kit?
A: No. You’re only getting the single block-off plate here — it seals the intake manifold entry, but that’s just one sealing point. The complete Stage 2 EGR Delete Kit adds the remaining plates, threaded plugs, and fittings needed to seal the exhaust manifold, EGR valve, and EGR cooler coolant lines.
