Optional Upgrades:
SRT STAGE I 48RE
TransGo (SK-48RE) Shift Kit Installed
TransGo (TF-TV) TV Valve Kit Installed
Superior Heavy Duty Band Strut
Adapt-A-Case Power Wedge
6 Direct Clutches and 6 Koleene Steels (1 Additional Clutch using modified pressure plate)
3 Koleene Forward Steels
SRT STAGE II 48RE
Sonnax Kryptonite 6-tab Teflon Coated Rear Planet Thrust Washers
TransGo (SK-48RE) Shift Kit Installed
TransGo (TF-TV) TV Valve Kit Installed
Superior Heavy Duty Band Strut
Adapt-A-Case Power Wedge
6 Direct Clutches and 6 Koleene Steels (1 Additional Clutch using modified pressure plate)
5 Forward Clutches and 4 Koleene Steels (1 Additional Clutch using modified pressure plate and modified apply plate)
Rigid 2ND Band
Billet Accumulator Piston
SRT STAGE III 48RE
Sonnax Kryptonite 6-tab Teflon Coated Rear Planet Thrust Washers
TransGo (SK-48RE) Shift Kit Installed
TransGo (TF-TV) TV Valve Kit Installed
Superior Heavy Duty Band Strut
Adapt-A-Case Power Wedge
6 Direct Clutches and 6 Koleene Steels (1 Additional Clutch using modified pressure plate)
5 Forward Clutches and 4 Koleene Steels (1 Additional Clutch using modified pressure plate and modified apply plate)
Rigid 2ND Band
Billet Accumulator Piston
Sonnax Billet Steel Input Shaft
Updates to the Transmission:
- Updated Overdrive Snap Ring
Updated Overdrive Snap Ring, The OEM Overdrive Snap Ring is very common to break, which can cause major failure in the overdrive unit or even cause it to lock up, which can be a major problem. WE REPLACE IT EVERY BUILD EVERY TIME, we do not CHECK IF OK, we do it the correct way! - Updated Sonnax Reverse Servo Pin
The OEM aluminum servo pin/plug is subject to wear, galling, and breaking at the spring seat area due to high stresses in reverse. The Sonnax replacement plug 22912-01K has been manufactured from hardened steel to more than double the tensile strength of the part. - Updated 3/4 Accumulator Spring
it is common for the OEM 3-4 accumulator spring to fatigue, causing sluggish shifts, or to break. This is replaced with a specially designed 3-4 accumulator spring to restore the proper shift feel and is resistant to breaking or fatigue. - Updated TransGo TV Valve
Restores TV System Functionality. Allows Re-use of valvebodies with worn Throttle Valve Bores. New TV valve has relocated lands that provides the valve with support from an unworn area of the bore restoring normal function. - Updated Sonnax Detent Ball & Sleeve Kit
The detent ball in the valve body wears into the aluminum bore due to continuous movement and vibration of the linkage. This creates excessive looseness in the manual valve lever and allows the manual valve to move out of alignment. No start or being stuck in Park can occur from the manual valve being out of position due to extra clearance. The bore is reamed oversized allowing installation of a precision steel sleeve restores worn valve body and properly supports the detent ball restoring detent ball function.
Compatible Vehicles:
| Year | Make | Model | Engine |
|---|---|---|---|
| Year | Make | Model | Engine |
| 1991 | Chevrolet | K2500 | 5.7L |
| 2003 | Dodge | Ram 2500 | |
| 2003 | Dodge | Ram 3500 | |
| 2004 | Dodge | Ram 2500 | 5.9L (diesel) |
| 2004 | Dodge | Ram 3500 | 5.9L (diesel) |
| 2010 | Dodge | Ram 2500 | |
| 2010 | Dodge | Ram 3500 |
Warranty:
At Shift Rite Transmissions, we’ve got you covered with our standard 1-year 36,000-mile transmission warranty when you purchase a new torque converter, giving you peace of mind from the start. For even greater protection, we offer upgraded warranty options: a 2-year, 50,000-mile warranty and a 3-year, 100,000-mile warranty, available for an additional cost. What’s even better? You don’t have to decide right away! You can upgrade your warranty at any time during your original 1-year coverage period. Stay protected for longer, on your terms.
At Shift Rite Transmissions, we want to ensure your transmission performs at its best! Our warranty covers everything under normal use, but it won’t cover damage to cases or shafts caused by misuse, abuse, or burn down due to operator error. For the warranty to remain valid, all warranty-related work must be completed at our facility in Kankakee, IL. The vehicle owner is responsible for shipping the transmission or vehicle to us for any necessary repairs. Please note that any unauthorized repairs made to the transmission will void the warranty. Please note that our warranty is non-transferable. We’re here to support you and keep your transmission in top shape!
Core Information:
Buyer is required to pay the core deposit up front. Core must NOT have any internal hard part damage or case damage, otherwise there will be additional charges deducted from your core deposit for the damaged hard part(s) or case. Initial shipping cost only covers one-way shipping. Return shipping cost for the transmission core is not included. Return shipping cost is deducted from your core deposit refund, after returned core passes inspection. All Cores must be returned within 30 days from date of purchase. Please visit our Core Return Section for more details.
Availability:
Majority of units are in stock, in the unlikely case we do not have one in stock, they are quickly available, in most cases, as little as one business day. There are many different variations of this transmission model available so please make sure we get a VIN number when or after you place the order.
2003.5-2004 48RE 4X4 TRANSMISSION 5.9L DIESEL
Built Better, Shifts Rite Every Time, Guaranteed
Parts List:
TransTec Overhaul Kit – Rubber Seals, Metal Clad Seals, Sealing Rings, Paper Gaskets
Master Rebuild Kit with all clutches and steels, name brand clutches such as Borg Warner or Raybestos
Filtran Brand Transmission Filter
Raybestos Reverse Band
Raybestos Kickdown (2nd) Band
Sonnax Steel Reverse Servo Pin
3/4 Accumulator Spring
Overdrive Snap Ring
Overdrive Sun Gear bearing & plate kit
Internal Harness
Overdrive / TCC Solenoid
Governor Pressure Sensor (Transducer)
Heavy Duty Borg Warner Governor Pressure Solenoid
Pump Gears
Sonnax MLPS Insulator
Bonded Pan Gasket
TransGo TV Valve
Sonnax Detent Ball & Sleeve Kit
Minimum Requirements for 48RE Builds & Core Exchanges:
– 6 pinion steel front planetary
– 6 pinion steel overdrive planetary
– 6 pinion steel rear planetary
– extra thick heavy duty sun shell
– 5 clutch direct drum
– true 48re valve body ending in AA casting
– true 48re pump with larger pump gears & sealing ring on stator
– 5 or 6 clutch overdrive brake clutch
– overdrive direct – 9 thin steels 0.054, 10 clutches, 0.085 stepped to 0.215 pressure plate
Let's Get You Rolling
What Our Customers Say
Needed a transmission for my dodge 5500. They shipped it quickly to my mechanic then let me bring the core in since I was going to be in the area, so I didn’t have to spend a bunch on shipping to get my core deposit back! Molly is the best to deal with! Can’t go wrong with them!
The owner was very involved with my 4l80e swap. Had an internal harness connector o-ring leak they helped me resolve to prevent fluid from leaching up into the main input harness. After that the trans performed flawlessly. Great communications and shipping crate professionally done. I will use them again I am sure. I would proudly wear a shirt or hat with their logo. Thanks team.
If you have any doubt about purchasing your transmission from Shift Rite put it to the side. I can promise you they stand on their work because it’s top shelf and the small chance they do make a mistake they will rectify it I assure you. In my case the mistake was on my end Bret still helped me resolve the problem . Thanks again Bret and the team at Shift Rite. I appreciate it!
As a first time customer, I was extremely pleased with how efficient and professional this company is. I had the pleasure of dealing with Molly who was very knowledgeable and pleasant. Molly was timely with returning calls/text messages. She is a great asset to the company. I would highly recommend their services if needed. Lisa Sewell
I purchased a 48RE Transmission from ShiftRite! It arrived quickly, installed it, and I was back on the road! So far all is well! The communication was outstanding and the people at ShiftRite really take care of their customers! Thanks!