Big Diesel Parts Insights

Your go to resource for everything diesel: expert how-tos, in-depth part breakdowns, troubleshooting tips, and maintenance guides to keep your heavy-duty engines running stronger, longer.

Flexplate vs. Flywheel: What’s Bolted to Your Crank, and Why You Should Care

TL;DR (The Short Version) Let’s Get Real About the Link Between Your Engine and Transmission Every time you dump the clutch or just cruise down the highway, there’s a big piece of metal spinning thousands of times a minute that makes it all happen. It’s bolted right to the back of your engine’s crankshaft, and […]

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Illustration of a broken-down yellow semi-truck on the highway with smoke, showing diesel tank contamination and microbial sludge
How to Clean Your Semi-Truck’s Diesel Fuel Tank: The Complete 2025 Guide

TL;DR: A dirty fuel tank in your truck is a direct threat to your engine and your wallet, leading to expensive repairs and significant downtime. This article provides a detailed breakdown of how to identify the problem, how to clean the tank yourself (safely and step-by-step), and when it’s better to trust the job to […]

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Camshaft Wear – Causes, Symptoms, and Solutions

Key Takeaways What the Camshaft Does (And Why It Matters) Deep in your engine, the camshaft times the opening and closing of intake and exhaust valves. Its lobes are precision-machined and rely on a thin film of oil to slide smoothly under immense pressure. Even a tiny scratch or wear spot can knock horsepower off […]

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