SKU: 28024428807

SunCoast 68RFE Catagory 1 450HP Transmission With Converter 07.5-18 Ram 6.7L Cummins

Sale price$3732.75 Regular price$4147.50
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Description

SunCoast 68RFE Catagory 1 450HP Transmission With Converter 07.5-18 Ram 6.7L CumminsThe 68RFE in the Ram 6. 7L Cummins has been around longer than a certain popular touchscreen tablet. In the last 14 years, some of those have been through many owners, towing jobs, stoplight to stoplight pulls, and teaching youngsters how to drive. They've suffered through a lot of heat, and electronic tuning. SunCoast offers a cost effective solution to revive your drivetrain in your 2007. 5 2019 Ram with their Category 1 Transmission. With an

The 68RFE in the Ram 6.7L Cummins has been around longer than a certain popular touchscreen tablet. In the last 14 years, some of those have been through many owners, towing jobs, stoplight to stoplight pulls, and teaching youngsters how to drive. They've suffered through a lot of heat, and electronic tuning. SunCoast offers a cost-effective solution to revive your drivetrain in your 2007.5-2019 Ram with their Category 1 Transmission. With an approach centered in science and study, this 450HP capable transmission has been built with heavy towing and street driving in mind. Below are some of the highlights of their build.

The Torque Converter

The Guardian SunCoast Torque Converter fits 68RFE transmissions and is engineered to handle everyday duties. Towing a camper or hauling dirt to a job site, this torque converter is configured to improve vehicle response and give you years of solid, reliable performance. It comes with furnace-brazed fins and hardened turbine splines. Improving on a common factory failing point, the clutches in this converter are carbon-graphitic for precise and accurate lock-up. While there is an increase the in performance over the factory unit and is a cost-effective solution, this converter is great for heavy duty towing and hauling, however it not intended for racing. Plan accordingly.

The Category Transmissions

The SunCoast Category 68RFE transmissions are designed and developed with the systematic approach to solving the issues with the 68RFE transmission.  SunCoast approaches each deficiency and failure point and need from a scientific approach.

The Smart Tech Drum

The 68RFE's factory overdrive clutches are at high risk of failure when towing or installing aftermarket programmers, delete kits, or larger turbos. This is in large part to the fragile and thin (.034) single-sided clutches. When exposed to increased torque or higher temperatures, they will distort, causing additional clearance and uneven pressure application. This will always result in burnt clutches. The clutches in the overdrive housing are by far, reportedly, the weakest link in the 68RFE transmission design.

SunCoast utilizes Sonnax Smart Tech 68RFE overdrive drums to address these issues. The new billet clutch housing holds a physically taller clutch pack, allowing the overdrive clutch area to increase 16%. In addition to the increased application to surface area, the thicker clutches and steels increase clutch steel mass by 28%, drastically improving the heat dissipation and aiding in transmission longevity.

The new 68RFE overdrive clutch drum also comes with a top bolt-on plate to help eliminate clutch pack flexing and distortion that contribute to premature failure.

The 2C Piston

The factory molded piston is prone to uneven application which leads to excessive heat in the clutches and steel leading to premature failure. In the 68RFE Category 1 Transmission, SunCoast replaces the factory piston with a greatly improved billet piece that also allows for an additional clutch further increasing surface supply area.

The Ducenti

SunCoast is proud of its Pro-Loc Ducenti 200psi Shift Calibration Kit for the 68RFE. SunCoast put together a solution after years of continuing research and refinement. In this valve-body, several key issues within this hydraulic circuit were addressed using a multi-faceted approach. The kit includes everything you will need to achieve 200psi without any additional tuning and is designed to be a complete drop-in, resulting in firmer, quicker gear changes aiding further in transmission longevity.

Features and benefits of this shift calibration kit include a new pump half, TCC limit valve, TCC switch valve, five billet three-ring accumulator pistons, billet upgraded valve-body plate, an upgraded heavy duty accumulator plate, and custom-calibrated spring rates for PR circuit.

The Solenoid Pack

Every new SunCoast transmission receives a new OEM solenoid back from Mopar.

Zero Cavitation Filter Kit

The factory 68RFE has had many issues with the pressure relief check valve system in the transmission pan filters. Initially, there were issues with the plastic filter splitting in half. This was later remedied by adding a pressure relief valve on top of the filter. This later proved to be an issue, as the valve would release itself from the filter all together.

The Zero Cavitation Filter Kit is a bottom feed filter kit allowing the usage of a torqueflite filter. This filter conversion will not only prevent pump cavitation, but it will also allow a higher volume of fluid to be passed through the system.
Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 28024428807

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Carnegie, US
★★★★★ 5
Like it so far after 2 weeks of swimming.
Like it so far after 2 weeks of swimming. Have been careful nio to press buttons underwater. I Like the large numerals, backlight, countdown timer, stopwatch and alarm. My last Timex 1440 lasted 10 years before the battery was low enough that the backlight was too weak to see at night. I replaced the battery on it but did not seal the o ring well enough with silicon grease so it leaked and quit working. I also had also replaced the band once.
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Reviewed in the United States on September 9, 2024
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Andrei
Lake Worth, US
★★★★★ 5
Good product.
A very nice and comfortable watch. Display is easy to read (I have poor eyesight). The menu is simple and intuitive. Fast delivery to Israel.
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Reviewed in the United States on October 1, 2025
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francisco
Alexandria, US
★★★★★ 5
Little Small On The Wrist
Really cool timepiece, been loving timex a lot recently, this is me coming over Casio/G-shocks. Although it is a bit smaller on the wrist it still looks very nice and I really love the gray and like green color contrast. Really easy to read the time as well.
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Reviewed in the United States on May 27, 2024
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William D
Draper, US
★★★★★ 1
Sturdy and digital
This watch has “ fake screws” holding the band on . The band is actually held on by the usual pins holding it on most watches but weaker . The pin came off while I was putting it on for the first time! This is the second time I bought off Amazon in 2 weeks where the watch appeared to be sturdy and the pins fell off . Going back to military watches that have material straps that go completely around wrist and do not have pressure on pins
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Reviewed in the United States on May 8, 2026
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Enri
Lake Worth, US
★★★★★ 5
Ten years of ownership…Thank you, Timex!
Color: Black, Size: One Size
Solid watch for everyday wear. I have worn this watch for over 10 years. I let a watch shop replace the battery about every 18 months. Other than the original band (which lasted 5 years) I have had zero problems. Still looks great, rugged and manly😇 Overall I recommend this watch for its value, reliability, simple clear design, legible hands in all light conditions. Great watch!!!
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Reviewed in the United States on February 13, 2026

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