Engine Overhaul Rebuild Kit | Cummins ISB6.7 Engine

Bring your Cummins ISB 6.7L engine back to life with a comprehensive rebuild kit engineered to restore near‐factory performance, reliability, and durability. Perfect for engines that are high mileage, showing signs of wear like low compression, burning oil, or heavy blowby.

Details: Engine Overhaul Kit Cummins 6 Cylinder ISB Series Engine Application

OE Replacements: ISB631-076, 5633411

What’s Included in Rebuild Kit

Key Benefits of Rebuilding Engine

Restores compression and oil control

Reduces internal engine noise and blow-by

Helps prevent oil consumption and exhaust smoke

Extends engine life and improves fuel efficiency

More cost-effective than purchasing individual parts separately

Things to Confirm Before Purchase

Engine’s CPL (Critical Parts List) / Serial Number — different variants of the ISB may require different components

Whether you need standard size or oversized pistons / bearings

Whether crank seals are included (some kits leave them out)

Warranty terms (parts only vs. parts + labor)

Return / core charge policies, especially if worn components are involved