Dieselsite

Dieselsite DieselSite.com is your source for diesel parts and accessories to boost your power, performance, and fuel mileage.

WHAT GOOD IS A TRANSMISSION COOLER IF THE FLUID CAN’T GET TO IT? 🌡️The factory bypass tube on the Ford 4R100 can malfunc...
09/04/2026

WHAT GOOD IS A TRANSMISSION COOLER IF THE FLUID CAN’T GET TO IT? 🌡️

The factory bypass tube on the Ford 4R100 can malfunction—and even when it’s working, it never sends full fluid flow through the cooler.

The DIESELSITE 4R100 Transmission Cooler Bypass Delete Kit eliminates the troublesome bypass tube and replaces the restrictive factory banjo bolts, allowing 100% fluid flow to the cooler. Better cooling means less heat, less stress and a better shot at keeping your transmission alive.

It fits 4R100-equipped Ford trucks, gas or diesel. There’s a separate kit also available for E-Series applications.

Kill the restriction—not your transmission. Go to Dieselsite.com to get yours today!

09/02/2026

Happy Wednesday Everyone!

Website Update:

We’re currently experiencing an issue with our website, and we’re aware of the situation. Our team is working to get everything back up and running as quickly as possible.

We apologize for any inconvenience this may have caused and will have this resolved shortly.

If you have any questions or need to place an order, please call us at 888-414-3457!

We can’t thank you all enough for your support!

KEEP THE FUEL FLOWING.Heath Diesel’s Heavy-Duty Lift Pump fits 1992–2000 Chevy and GMC trucks with the 6.5L Turbo Diesel...
08/29/2026

KEEP THE FUEL FLOWING.

Heath Diesel’s Heavy-Duty Lift Pump fits 1992–2000 Chevy and GMC trucks with the 6.5L Turbo Diesel, providing better fuel pressure under increased demand.

It installs in the factory location with an OEM-style plug-in harness—no modifications required. Better fuel flow also reduces stress and improves cooling for the injection pump, helping extend fuel-system life.

It even includes a new mounting bracket in case the original is rusted.
https://www.dieselsite.com/65HeavyDutyLiftPump.aspx

WAKE UP YOUR 6.5L.Heath Diesel’s Max-E-Tork Programming is custom tailored for 1996–2000 Chevrolet and GMC C/K trucks eq...
08/28/2026

WAKE UP YOUR 6.5L.

Heath Diesel’s Max-E-Tork Programming is custom tailored for 1996–2000 Chevrolet and GMC C/K trucks equipped with the 6.5L Turbo Diesel.

Choose up to 50 additional horsepower for towing or up to 80 horsepower for performance—plus approximately 100 lb-ft of torque. Paired with the Turbo-Master, it also improves turbo response, transmission operation, fuel delivery and timing.

Make your old-body Chevy or GMC feel stronger where it counts.
https://www.dieselsite.com/maxetork96.aspx

YOUR 6.5L DOESN’T HAVE TO FEEL ITS AGE.Heath Diesel’s Max-E-Tork Programming wakes up 1994–1995 GM 6.5L Turbo Diesel tru...
08/28/2026

YOUR 6.5L DOESN’T HAVE TO FEEL ITS AGE.

Heath Diesel’s Max-E-Tork Programming wakes up 1994–1995 GM 6.5L Turbo Diesel trucks with tuning tailored to your specific application.

Choose the setup that matches how you use your truck:

🔧 Towing tune: gains of 40–50 horsepower and 100 lb-ft of torque
🔥 Performance tune: gains of 70–80 horsepower and 100 lb-ft of torque

Paired with the Turbo-Master boost controller, Max-E-Tork improves the fuel and timing curves, transmission operation and turbo response while helping lower exhaust temperatures—and it may even improve fuel mileage.

Purchase a new programmed EPROM or send in your original for tuning. No core required.

You’ll like the way your truck feels.
https://www.dieselsite.com/maxetork94.aspx

STOP WASTING BOOST. 💨The factory wastegate controller on the 1999.5–2003 Ford 7.3L Power Stroke begins bleeding off driv...
08/22/2026

STOP WASTING BOOST. 💨

The factory wastegate controller on the 1999.5–2003 Ford 7.3L Power Stroke begins bleeding off drive pressure well before the turbo reaches its target boost. The result? A lazier boost curve and power left on the table—especially through the midrange.

The DieselSite Turbo-Master Wastegate Controller replaces the factory spring-loaded canister with a fully adjustable mechanical system that keeps the wastegate firmly closed until the preset bypass point is reached. That means steadier boost, sharper response and more efficient turbocharger performance across the operating range.

CNC-machined from billet aluminum, the Turbo-Master is a direct bolt-on upgrade for the factory turbo and also fits the Garrett GTP38R.

KEEP THE WASTEGATE CLOSED. KEEP THE POWER COMING.

👉 Take control of your boost! Go to Dieselsite.com

HEAT KILLS TRANSMISSIONS. 🔥More horsepower, heavy trailers and long grades can push transmission temperatures into the d...
08/21/2026

HEAT KILLS TRANSMISSIONS. 🔥

More horsepower, heavy trailers and long grades can push transmission temperatures into the danger zone—especially when you’re relying on the undersized factory cooler in a 7.3L or 6.0L Ford Power Stroke.

The DieselSite 40-Row Transmission Cooler uses a massive stacked-plate design to dramatically increase cooling surface area and fluid capacity. With an estimated 90,000+ GVW rating, it completely outclasses the stock cooler found on 1999–2003 7.3L trucks, which was rated at just 28,000 GVW.

Whether you’re towing heavy, making more power or simply trying to extend the life of your transmission, keeping temperatures under control is one of the smartest upgrades you can make. Application-specific fittings and hardware options are available for 1994–2007 Power Stroke trucks.

Cooler fluid. Longer transmission life. Greater peace of mind.

👉 Upgrade your cooling capacity! Go to Dieselsite.com.

YOUR 6.5L COOLANT TANK WON’T LAST FOREVER.After three decades under the hood, the original plastic coolant bottle in you...
08/21/2026

YOUR 6.5L COOLANT TANK WON’T LAST FOREVER.

After three decades under the hood, the original plastic coolant bottle in your 1994–2000 Chevy or GMC 6.5L diesel may be brittle, discolored and one heat cycle away from cracking. Making matters worse, the factory replacement has been discontinued.

DieselSite’s solution is built to last: an all-aluminum coolant expansion tank designed as a durable replacement for the aging factory bottle. It features a proper threaded 16 PSI pressure cap, an air-purge valve and an easy way to monitor the coolant level—without depending on old, failure-prone plastic.

Don’t wait for a cracked tank and disappearing coolant to tell you it was time for an upgrade.

👉 Protect your 6.5L cooling system:
https://www.dieselsite.com/1993-200065lchevygmccoolantbottle.aspx

☀️ THE DOG DAYS OF SUMMER ARE BRUTAL ON TRANSMISSION TEMPS.Hot pavement. Heavy trailers. Long grades. Stop-and-go traffi...
08/15/2026

☀️ THE DOG DAYS OF SUMMER ARE BRUTAL ON TRANSMISSION TEMPS.

Hot pavement. Heavy trailers. Long grades. Stop-and-go traffic. It all adds HEAT—and heat is one of the fastest ways to cook an automatic transmission.

Once transmission temps climb, fluid starts losing its ability to protect. Keep pushing it and you’re risking slipping clutches, accelerated wear, and eventually a transmission failure that can cost THOUSANDS.

The DIESELSITE COOLERMAX 17-Row Transmission Cooler fights back with nearly 59,000 BTUs of cooling capacity, compared to just 31,000 BTUs from the stock 1999–2003 7.3L cooler.

A transmission cooler is a whole lot cheaper than a transmission.

Keep towing. Keep working. KEEP IT COOL. ❄️

MORE POWER FINDS THE WEAK LINKS.On a hard-working or modified 6.7L Power Stroke, the factory flex plate can become one o...
08/15/2026

MORE POWER FINDS THE WEAK LINKS.

On a hard-working or modified 6.7L Power Stroke, the factory flex plate can become one of them.

The DIESELSITE 6.7L 6R140 Billet FlexPlate is machined from high-speed alloy billet steel to combat the cracking and fatigue failures that can show up with high mileage and higher horsepower.

Built for 2011–2019 6.7L Power Stroke trucks with the 6-stud 6R140 setup, it even includes new DIESELSITE chromoly flex plate bolts.

If the transmission is coming out, don’t overlook what’s sitting behind it.

💪 Upgrade the flex plate while you’re already in there.

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7400 W Industrial Lane
Homosassa, FL
34448

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