Sell Your Detroit Diesel Blower Cores — Diesel Pro Power Buys 6V71 & 12V71 Blower Cores

If you have used or rebuildable Detroit Diesel blowers sitting around your shop, on a shelf, or attached to an old engine, they’re worth more than scrap. At Diesel Pro Power, we buy blower cores for Detroit Diesel 6V71 and 12V71 engines, and we make the process fast, easy, and fair.

We’ve been rebuilding Detroit Diesel components for decades, supplying customers all over the world with the highest-quality rebuilt blowers, pumps, and engine parts. To keep that operation going strong, we’re always looking to buy good-quality blower cores — the used but rebuildable housings and assemblies that form the foundation for our professional rebuilds.

By selling your blower cores to Diesel Pro Power, you’re helping to keep these classic two-stroke engines alive — and putting cash back in your pocket.

What Exactly Is a Blower on a Detroit Diesel Engine?

The blower on a Detroit Diesel 6V71 or 12V71 isn’t just an accessory — it’s the very heart of the engine’s breathing system.

Unlike modern four-stroke diesels, Detroit Diesel’s classic two-stroke engines cannot draw in air on their own. They rely entirely on the roots-style blower to push air into the cylinders and scavenge (clear out) the exhaust gases from the previous combustion cycle. Without that constant flow of air, the engine would simply not run.

Blower Components for Detroit Diesel 6V71 Non – Turbo Engine

Blower Components for Detroit Diesel 6V71 Turbo Engine

Blower Components for Detroit Diesel 12V71 Non – Turbo Engine

Blower Components for Detroit Diesel 12V71 Turbo Engine

The blower provides:

• Air scavenging: It forces fresh air into the cylinders to push out exhaust gases.

• Combustion support: It ensures the right amount of oxygen is delivered for complete fuel burn.

• Cooling and lubrication balance: Proper airflow helps control combustion temperature and oil film integrity.

• Smooth performance: It helps maintain even idle, stable operation, and consistent torque across all engine speeds.

In short, the blower is to a Detroit Diesel two-stroke what lungs are to a person — it makes the entire system work. That’s why these components are so vital and why their condition matters so much.

What Is a Blower Core?

A blower core is a used blower that can be rebuilt. It typically includes the main housing, rotors, end plates, and gear drive assembly. Even if it’s worn, has minor scoring, or hasn’t been used for years, as long as the main structure is intact and rebuildable, it has value.

At Diesel Pro Power, we take these cores, disassemble them completely, and rebuild them from the ground up. We replace bearings, seals, and gaskets, machine the housings as needed, reset clearances, and test the finished blower to make sure it performs like new.

That’s why blower cores are so important — they allow us to continue supplying top-quality rebuilt blowers for the Detroit Diesel community.

If you have one or more of these blower cores, you’re sitting on a valuable piece of Detroit Diesel history — and Diesel Pro Power wants to buy it from you.

Why We Buy Blower Cores

We rebuild Detroit Diesel blowers for customers in over 200 countries. From tugboats and fishing vessels to generators and industrial engines, thousands of operators still rely on these classic two-stroke engines to get the job done.

But to keep up with global demand, we need a steady supply of rebuildable blower cores. Genuine Detroit Diesel housings and rotor assemblies are no longer made new, so quality used cores are essential to continue producing rebuilt units.

By selling your cores to Diesel Pro Power, you’re helping to support a worldwide community of marine engineers, mechanics, and operators who depend on Detroit Diesel engines every day. You’re also doing your part to recycle valuable components responsibly — extending the life of a proven design that’s still hard at work today.

What We’re Looking For

We’re currently buying blower cores for Detroit Diesel 6V71 and 12V71 engines — both single and twin blower setups.

We’re interested in:

• Cores removed from engines in running or restorable condition

• Complete assemblies with housings, rotors, and end plates

• Units with minimal or repairable wear

• OEM Detroit Diesel configurations

Even if the blower shows signs of surface rust, wear, or age, it may still qualify. If you’re unsure, just send us a few photos — we’ll evaluate the condition and give you an honest, fair assessment.

What Happens to Your Blower Core

Once your blower arrives at Diesel Pro Power, our technicians evaluate it for rebuild potential. The unit is completely disassembled, and each part is cleaned, measured, and inspected.

• The housing is checked for cracks or distortion.

• The rotors are examined for wear or contact marks.

• The end plates and gears are measured for clearance and alignment.

• New bearings, seals, and gaskets are installed.

• The rotors are timed and balanced to exact Detroit Diesel specifications.

Finally, the rebuilt blower is tested for air flow, pressure, and noise, ensuring it meets or exceeds factory standards.

That’s the kind of precision your old blower core helps make possible — turning a used part into a critical component for another running Detroit Diesel engine.

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