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SKU #: ATS-3099142290-Main ATS Stage 1 Transmission Package 04.5-07 5.9L Cummins

Purchase ATS Stage 1 Transmission Package 04.5-07 5.9L Cummins
    • 2004.5-2007 5.9L Dodge Cummins
    • 48RE Automatic Transmission
  • Choose One: Core Charge: ?

    Terms & Conditions

    We at Diesel Power Products offer a deferred core program in which we allow you to defer the typical upfront core charge when purchasing via credit card payment. All cores, whether the core charge was deferred or not, must be returned within 21 days from delivery date of product requiring core charge. Failure to do so can result in forfeiture of the entire core charge return. In the event you originally deferred the core charge, you authorize Diesel Power Products to charge you for the core charge.

    All cores must be returned to the original warehouse that original shipment was sent from. If a return label is provided in the original shipment, use this tag. If one is not included, contact us immediately, and we can provide you with the correct address of where the core(s) must be returned to, as well as an RMA (Return Merchandise Authorization) number. DO NOT rely on the return address on the original label as a source for where to ship to.

    If cores are shipped to the incorrect warehouse, your core money will be returned less the shipping cost for us to send the core(s) to the correct warehouse, or if you deferred the core you may be charged for the shipping amount.

    Cores that have been disassembled and/or have missing and/or damaged major components will not receive full core credit.

    Diesel Power Products has the right to alter this policy (i.e. extend the terms) for any reason. If you have an outstanding circumstance, contact us.

    What is a "Core Charge"?

    In order to understand what a core charge is, you must first understand what a core is. In the automotive industry, most products are manufactured from brand new materials. However, numerous products are also remanufactured, meaning that the manufacturer of the product takes a used product, typically removed from a vehicle, disassembles, and replaces all worn components of the master product. A great example of this is in regards to automatic transmissions in which the manufacturer takes an existing transmission, replaces all of the inner working components, such as the torque converter, valve body, etc. and merely reuses the case.

    Because aftermarket manufacturers require a steady stream of incoming cores to build, they charge a deposit on the core, known as a core charge, that is refunded upon receipt. In some cases, the core is not reusable, such as in the event of a cracked case, at which point the core deposit would not be credited as the core component is not reusable.


Ensure that the power of your Cummins is getting to the ground with an ATS Transmission Package. The 48RE transmission is the weakest point on a Dodge Cummins truck. Not only do they fail on trucks wi ... read more

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Ensure that the power of your Cummins is getting to the ground with an ATS Transmission Package. The 48RE transmission is the weakest point on a Dodge Cummins truck. Not only do they fail on trucks with minor upgrades, but even trucks in stock form have been known to be too powerful. A heavy duty truck needs parts which can stand up to heavy trailers, stop-and-go commutes to work, or high-horsepower applications. That's why ATS modifies the transmission to make it the strongest and most reliable part of your drivetrain.

With the many shortcomings of the 48RE, none are more important than the clutch packs. This is what takes the power load and transmits it to the rear wheels. ATS transmissions increase the clutch count in the Forward, Overdrive, and Overdrive Brake clutch packs which allow much higher torque capacity in each gear. Clutch material is also essential which is why ATS uses Borg Warner and Raybestos clutches which has both high torque strength, as well as longevity and reliability.

Another important aspect is the hard parts on the transmission. The factory sheet metal strut anchor is replaced with a much stronger billet strut anchor, allowing more precision application of the band. The factory plastic accumulator piston is replaced with a billet unit, as well. The apply lever is a 1:5.0 ratio apply arm, which applies the Borg Warner red lining band. This band features a performance friction material capable of holding higher power levels.

The valve body receives extensive modifications, as well. The ATS valve body has the ability to lock the torque converter in 1st and 2nd gear and circulate transmission fluid in park/reverse/neutral. ATS also machines the TV valve passage and they install their own proprietary TV valve sleeve, and increase the line pressure. You can choose between a towing or a racing valve body. The towing version will deliver smooth, quick, crisp shifts that enhance the drivability and operation of your transmission on the street and attached to a trailer. This is the valve body of choice for a street driven all-purpose truck. The race valve body is their hardcore power build. It is made to sacrifice as little time as possible between shifts, shift hard and fast, and leave nothing behind. It is a very aggressive valve body and a minimum of billet input shaft and flex plate are recommended.

IMPORTANT NOTE: This Stage 1 Transmission Package comes standard with a Towing Valve Body. If you prefer a more aggressive shift pattern please leave a note in the comment section of your order to switch to a Racing Valve Body. No additional charge necessary.

SHIPPING POLICY - PLEASE READ - Due to the size and weight of transmissions, they cannot be shipped through traditional couriers, such as UPS, FedEx, USPS, etc. and MUST be shipped via truck freight. For this reason, we cannot offer free shipping on transmissions. However, we do offer the option to pay for return shipping up front. If you select this option once your core transmission is ready to be picked up, you just need to give us a call with your original order number and the core tag on the transmission, and we'll take care of the rest. As always, if you have any questions, give us a call or send us an e-mail.


  • ManufacturerATS Diesel Performance
  • MPN3099142290 | 3099142308
  • New performance forward clutch pack and steels with 1 added friction
  • New performance direct clutch pack and steels with 1 added friction
  • New performance overdrive brake clutch pack and steels with 1 added friction
  • New performance overdrive clutch pack and steels
  • Low/reverse band replaced with Borg Warner Red Lining performance band
  • Intermediate/2nd gear band replaced with Borg Warner Red Lining performance band
  • 1:5.0 band apply lever
  • Billet Band strut
  • Billet accumulator piston
  • Precision machined forward pressure plate (machined step)
  • Precision machined lower forward pressure plate (machined flat)
  • Precision machined overdrive brake pressure plate (machined flat)
  • New direct pressure plate
  • Performance low/reverse one-way clutch
  • Machined TV valve sleeve (prevents sticking TV valve)
  • Ability to achieve 1st and 2nd gear lockup
  • Ability to circulate fluid to the torque converter in park/reverse/neutral
  • Increase line pressure
  • Improve shift quality and firmness
  • Gasket and seal overhaul kit
  • Bearings and bushing
  • Industry best 5 year / 500,000 mile warranty!
  • ATS Built 48-RE Auto Trans
  • ATS 5 Star Viskus Clutch Drive Torque Converter
  • ATS Extra Deep Transmission Pan


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How much can the stage one handle?

We do not list power / torque, this is due to different usages. 500hp towing will be much different than a 500hp sled pull truck. I would recommend to shoot us a call so we can point you into the correct stage transmission.


Do you use thrust washers in your build or do you use Torrington bearings? Serviced my transmission and found about 1/2 cup of finely ground, shiney metal fines stuck to the magnet in the pan. I know that it was the remnants of the thrust washers after talking to the local dealership.I see where some are using the bearings claiming better service and longer life expectancy for the transmission. Thanks.?

Yes, all thrust applications have been removed and replaced in favor for a true machined part or bearing.


I'm interested in the Stage 1 transmission. I didn't read if the solid thrust washers were replaced with the Torrington Bearings. Does this transmission use bearings or still the stock style washers? If it uses the washers, what upgraded trans uses the bearings? I have a stock 5.9 so its not a hi performance engine. Just use it for towing my RV. Thanks.?

It will be upgraded with the torrington style bearings to replace all the popular ones.


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ATS Stage 1 Transmission Package 04.5-07 5.9L Cummins

ATS Stage 1 Transmission Package 04.5-07 5.9L Cummins

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