Cummins ISB 6.7L Valve Collett, New (3940123)

Is your Cummins ISB 6.7L on the fritz? We can help! New cylinder head parts will prevent the risk of damage and overheating to your engine.

We all know in order to get a million miles out of your ISB 6.7L you need to keep it cool, well-lubricated and perform regular maintenance. Let one of those slip and your rig is going to wind up in the shop with you stuck waiting for the repair. We know additional cylinder head parts for your ISB 6.7L – like a 3940123 Valve Collett, head valves or other parts of a cylinder block – can cost an arm and a leg. That’s where 4BTdiesel steps in; we offer premium aftermarket parts for the cylinder head assembly at a much lower price than the OE.

Don’t settle for subpar parts in your ISB 6.7L. Our products are crafted with state-of-the-art tooling and machining to ensure supreme quality. Plus, they’ve been pressure- and vacuum-tested for quality assurance.  Take your Cummins ISB 6.7L back to its glory days! 

There’s no need to stress about the hassle of installation either, because when you buy a 3940123 Valve Collett for a cylinder block from us, the components come ready to install to save you time while also ensuring that specifications are within proper tolerances. Even better, you’ll get support from our professionally certified factory mechanics who are available to answer any of your questions from purchase to installation. Reach out to the 4Btdiesel team to benefit from our technical insight, premium parts, fast shipping and customer-first service.