Dieselsite Ford Transmission Filtration Systems

DieselSite Ford Transmission Filtration System – External Spin-On Filter Kit

Protect your transmission the way the factory never did with the DieselSite External Transmission Filtration System. Designed to provide true fine filtration on the pressure (push) side of the pump, this system captures clutch dust, metal particles, and debris before they return to the transmission pan — dramatically extending transmission life and improving shift quality.

This updated system features a billet aluminum bypass mount, stainless braided high-pressure hoses, and OEM-style fittings for a clean, no-cut installation.

🔥 Why External Filtration Matters:

Factory transmission filters are designed only to catch large particles and sit on the suction side of the pump. Fine filtration isn’t possible internally without restricting flow. DieselSite solves this by filtering fluid after it exits the transmission, where fine filtration is both safe and effective.

✅ Key Features & Benefits:

• 22-Micron Spin-On Filter – Captures fine clutch material and wear debris

• Full-Flow Design – Filters 100% of the fluid on every pass

• Built-In Bypass Valve – Opens at 25 PSI to ensure fluid flow if the filter becomes restricted

• Billet Aluminum Housing – Durable, corrosion-resistant, and serviceable

• Stainless Braided Hoses – High-pressure rated with OEM-style connections

• No Cutting or Modifying Lines – Fully reversible installation

• Spin-On Filter Changes – No more dropping the transmission pan

• Acts as a Mini Cooler – Airflow over the filter helps dissipate heat

• Optional Pressure Gauge Support – Monitor filter condition and service intervals

🛠️ Transmission Protection You Can See:

• Keeps transmission fluid clean

• Protects valve body and solenoids

• Helps prevent failure after torque converter issues

• OEM pan filter becomes a simple pickup — rarely needs replacement

📏 Line Size Compatibility (Verify Before Ordering):

• 5/16″ Line

  • Most cars & light trucks

  • Most pre-1997 E4OD

• 3/8″ Line

  • Some 1997 E4OD

  • 1999–2003 4R100

  • Ford 6-Speed Manual

• 1/2″ Line

  • Ford 5R110 Automatic

How to Check Line Size:

• 1/2″ wrench = 5/16″ line

• 5/8″ wrench = 3/8″ line

• 3/4″ wrench = 1/2″ line

📦 What’s Included:

• DieselSite billet filter housing with internal bypass

• Stainless braided hoses & OEM-style fittings

• Spin-on transmission filter

• Mounting hardware

📋 Installation Notes:

• Installs on the return line at the rear of the transmission

• No cutting, flaring, or permanent modifications required

• Optional pressure gauge available (shown in photos)

• Works on automatic transmissions and manual transmissions with an internal pump

🚗 Applications:

• Ford E4OD / 4R100 / 5R110

• Ford 6-Speed Manual (with internal pump)

• Many additional applications using common line sizes

If you want maximum transmission protection, cleaner fluid, smoother shifts, and easier service, the DieselSite Transmission Filtration System is one of the smartest upgrades you can make — proven, engineered, and built to last.