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Posted on March 23, 2021 by David Ley

What are Supply and Dosing Modules? A Guide to Bosch Denoxtronic Systems

At Highway & Heavy Parts, we do parts differently! We won’t sell you just any part. We won’t just sell you the lowest price part. And we certainly won’t sell you a part from an inferior supplier.

Posted on March 15, 2021August 25, 2025 by David Ley

Why Did My Diesel Cummins ISX Camshaft Fail?

Are you hearing a sudden engine knock? Is your engine running rough?

Posted on March 7, 2021 by David Ley

What Are The Primary Differences Between Cummins Diesel ISX and N14?

Cummins has a history of producing strong, long-lasting diesel engines, including some of the most popular ones for on-highway applications. Two of their engines in particular, the N14 and the ISX, continue to remain popular diesel choices.

Posted on February 24, 2021 by David Ley

Why Did My VGT Turbo Fail? 3 Common Symptoms

Has your turbo failed? Are you looking at a very expensive repair?

Posted on February 21, 2021 by David Ley

What’s The Difference Between Detroit Diesel Series 60 12.7L and 14L Engines?

If you’ve heard of Detroit Diesel, odds are you’ve heard of their Series 60 line of engines. It includes three different engines, a 11.1L, a 12.7L, and a 14L.

Posted on February 18, 2021 by David Ley

How Does a Cylinder Head Work On A Diesel Engine?

Today we’re going to go over a little bit about cylinder heads. Before diving head first into the cylinder head market, its important to have an understanding of what you’re working with.

Posted on February 17, 2021 by David Ley

What Caused A Crack In My Diesel Engine Cylinder Head?

We know how frustrating it can be when your cylinder head cracks. You’re losing coolant, have compression in your cooling system, or seeing excessive smoke, and you’re looking at lost time and money and an expensive repair.

Posted on February 16, 2021 by David Ley

When Can I Reuse My Cylinder Head Bolts? How To Clean And Inspect

Head bolts might seem like a minor or unimportant part, but without them, combustion wouldn’t be possible and your diesel engine wouldn’t work. They hold your cylinder head to the engine block and help the head gasket to seal properly.

Posted on February 16, 2021August 14, 2025 by David Ley

When Does Your Cummins N14 Need A Rebuild?

We know that rebuilding your engine is a time consuming and expensive process. And that’s not even mentioning the profits you lose when your engine is out of commission.