5.9 cummins Crack Reinforcement

When cast-metal repair pros start seeing a crack on one specific type of engine over and over in the same place, there is a reason. For the 5.9-liter Cummins engines, a common issue is a crack under the core plus on the passenger side of the block. Welding on an assembled engine is never the answer and usually results in many leaks and additional cracks.

After seeing this particular crack numerous times in Cummins 5.9-liter engines built between 1999 and 2001, the repair experts at LOCK-N-STITCH Inc. knew they needed to get to the root of the problem. The LOCK-N-STITCH Inc. technicians interviewed driver after driver to seek out the similarities and differences in those with the Cummins crack issue. What they found was surprising.

Most drivers assume that cracks happen due to heavy loads or increased horsepower. The Cummins crack, however, happens during engine warm-up, and specifically when a driver hits the road before the engine is fully heated through. The area that cracks is the thinnest and weakest part of the side of the block so this is where the crack forms.

LOCK-N-STITCH Inc. offers the only real, long-term solution to the issue of this 5.9-liter Cummins engine crack issue. Using their patented metal stitching and a new reinforcing bracket for extra strength, the LNS team brings their 30 years of experience to an otherwise tricky problem. For more information, call LOCK-N-STITCH Inc. today at 800-736-8261 or 209-632-2345. Or email your questions to gary@locknstitch.com.