Product Description
CNC Fabrication 425007 98.5-03 7.3L 4R100 Transmission Cooler Line Kit w/ 3/8 Inch Barbs
The CNC Fabrication 425007 4R100 Transmission Cooler Line Kit is a premium replacement solution for rusted, leaking, or damaged factory transmission cooler lines on 1999-2003 Ford 7.3L Power Stroke trucks equipped with the 4R100 automatic transmission. Manufactured from domestic 304 seamless stainless steel tubing and built in-house using CNC tubing bending equipment, this kit provides superior durability, corrosion resistance, and long-term reliability compared to factory transmission cooler lines.
Designed to connect directly to factory transmission coolers equipped with 3/8-inch ports, the CNC Fabrication 425007 utilizes genuine Brennan and Parker fittings and includes a mounting bracket for a professional installation. Whether you're restoring a daily driver, tow rig, or work truck, this stainless steel transmission cooler line kit helps eliminate common factory line failures while improving reliability for years to come.
Features
- Direct replacement for factory 4R100 transmission cooler lines
- Fits 1999-2003 Ford 7.3L Power Stroke applications
- Constructed from domestic 304 seamless stainless steel tubing
- Built in-house using CNC tube bending equipment
- 3/8-inch hose barb fittings designed to match factory cooler ports
- Includes genuine Brennan and Parker fittings
- Corrosion-resistant stainless steel construction
- Includes mounting bracket
- Designed for long-term durability and reliability
- Excellent solution for replacing rusted factory transmission lines
Fitment
- 1999 Ford F-Series 7.3L Power Stroke with 4R100 Transmission
- 2000 Ford F-Series 7.3L Power Stroke with 4R100 Transmission
- 2001 Ford F-Series 7.3L Power Stroke with 4R100 Transmission
- 2002 Ford F-Series 7.3L Power Stroke with 4R100 Transmission
- 2003 Ford F-Series 7.3L Power Stroke with 4R100 Transmission
- Factory transmission coolers utilizing 3/8-inch ports
Note: This kit is designed for factory-style transmission coolers utilizing 3/8-inch ports. Vehicles equipped with a 6.0L Power Stroke transmission cooler featuring 1/2-inch ports should use CNC Fabrication part number 425107 instead. CNC Fabrication recommends bypassing or removing transmission cooler lines routed through the radiator heat exchanger to prevent potential coolant contamination in the event of radiator failure.
What's Included
- (2) Stainless Steel Transmission Cooler Lines
- 3/8-Inch Hose Barb Fittings
- Genuine Brennan and Parker Fittings
- Transmission Line Mounting Bracket
Specifications
- Manufacturer: CNC Fabrication
- Part Number: 425007
- Application: Transmission Cooler Line Replacement Kit
- Vehicle Compatibility: 1999-2003 Ford 7.3L Power Stroke
- Transmission Compatibility: 4R100 Automatic Transmission
- Tubing Material: Domestic 304 Seamless Stainless Steel
- Fitting Brand: Genuine Brennan and Parker
- Cooler Connection Size: 3/8-Inch Hose Barb
- Line Construction: CNC-Bent One-Piece Tubing
- Corrosion Resistance: Stainless Steel Construction
- Mounting Hardware: Mounting Bracket Included
- Primary Use: Factory Cooler Replacement and Upgrade
Cross Reference Numbers
425007, CNC425007, 4R100 Transmission Cooler Line Kit, 7.3 Transmission Cooler Lines, 7.3 Power Stroke Transmission Line Kit, 4R100 Stainless Cooler Lines, Ford Transmission Cooler Upgrade, 425107
FAQ
What vehicles does the CNC Fabrication 425007 fit?
This kit is designed for 1999-2003 Ford 7.3L Power Stroke trucks equipped with the 4R100 automatic transmission.
Will this work with a 6.0L Power Stroke transmission cooler?
No. This kit is intended for factory coolers utilizing 3/8-inch ports. If your truck has been upgraded to a 6.0L transmission cooler with 1/2-inch ports, CNC Fabrication recommends using part number 425107.
What material are the transmission lines made from?
The lines are manufactured from domestic 304 seamless stainless steel tubing for excellent corrosion resistance and durability.
Are fittings included?
Yes. The kit includes genuine Brennan and Parker fittings along with the required mounting bracket.
Why should the radiator transmission cooler be bypassed?
If the internal heat exchanger inside the radiator fails, coolant can enter the transmission fluid system, potentially causing severe transmission and torque converter damage.
Can shipping damage the lines?
The transmission lines are manufactured from durable stainless steel tubing. Minor bends caused during shipping can typically be corrected without affecting performance.
