6.7 Cummins Grid Heater Bolt Failures – A Serious Engine Destroying Problem

Thanks for @3GuysGarage sharing!

✅What issue will trouble you?

The stock grid heater design has a potentially serious risk: loose or detached nuts under the grid may be sucked into the engine, hit the piston, and cause serious engine failure. Once this happens, you may need to take high repair costs or replace a new engine.

Eliminate the issue of stock grid heater failure, avoid high repair costs, and improve engine reliability.

✅What did we make?

Spelab's grid heater delete plate effectively eliminates this risk. It removed the heater bolts. Instead, a hole was placed above the intake horn to house the heating wire. So, the heating function is being kept, but there is no gird heater failure.

We have made significant improvements in the design of the intake horn. The air intake is more than twice as large as the stock, and the internal cavity volume is also larger, which can accommodate more air simultaneously and improve intake efficiency. Heating wire to the intake manifold to supplement the heating function and set a 45° sensor port on the manifold to facilitate accurate installation and access of the sensor.

SPELAB retrofit program eliminates the risk of heater bolt breakage. Combined with a coil-over heater, the engine can still start smoothly in cold conditions.


✅This video documents Matt's process of modifying a truck, including the installation of a new camera to improve video quality, and performance upgrades using Spelab parts, such as exhaust, intake system, EGR system deletion, and grid heater. Finally, he also installed a new touchscreen radio to give the truck a brand-new look.

[00:00] New camera and modification plan
[00:49] Installation of Spelab accessories plan
[04:37] Removal of the EGR system and grid heater
[06:09] Removal of old parts and installation of new accessories
[07:11] Modification and parts introduction
[08:51] Checking the condition of the heater nut
[11:25] The heater nut is in good condition
[11:43] Explanation of the risk of heater damage and recommendation to remove it
[13:07] Summary of modification points
[14:23] Removal of old parts and installation of new accessories
[17:27] Intake manifold modification
[18:52] Pay attention to bolts and wiring harnesses during installation
[20:20] Installing new intake manifold
[22:59] Intake manifold installation completed
[24:57] Beginning EGR removal work
[26:15] Remove the EGR cooler and check for cracks
[27:50] Complete EGR removal, the truck is brand new
[28:45] Modification completed, show the effect
[30:00] Install the plug-in plate, complete the EGR modification
[31:12] Modification completed, ready to start

#spelab #spelabautoparts #cummins #exhaust #spelabintakehorn #spelab6.7cummins

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