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HomeShop by DepartmentPerformanceTransmissionsRebuild KitsSuncoast Category 4 48RE Rebuild Kit (WITH CONVERTER) - 03-07 Dodge Cummins 48RE

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Suncoast Category 4 48RE Rebuild Kit (WITH CONVERTER) - 03-07 Dodge Cummins 48RE

Thoroughbred Sku #: SUNSC-48-4-CRE

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$6,395.00 On Sale! $5,755.50

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Terms & Conditions for Cores

Many stock replacement parts such as turbos, injectors, injection pumps, and high pressure oil pumps have a core charge that is associated with the new replacement part. You must return the old part to receive a refund on the core charge.

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.
Cores that have been disassembled and/or have missing and/or damaged major components will not receive full core credit.
Returned cores must be on a "like-for-like" basis, meaning that the returned core has the exact same fitment as the remanufactured component that was purchased. If the core is not "like-for-like," your core may not be eligible for return/credit.
You are responsible for core return shipping cost.

If you plan on returning your core you have two options.

Thoroughbred Diesel offers defer the upfront core charge when purchasing via credit card payment.

OPTION 1: You can accept the core charge, which means you will be charged for the part AND the core at time of purchase. You still have the option to send it back, and if you do, the core will be refunded back on the card used, presuming the core meets core criteria and the core is returned within 30 days from the time your order is received. If you return your core after 30 days you may refer to the Core Charge Timeline below as to how you will be refunded.

Core Charge Timeline

If the core is returned after 30 days, 90% of the core will be refunded.
If the core is returned after 60 days, 70% of the core will be refunded.
If the core is returned after 90 days, 50% of the core will be refunded.
After 6 months cores will be accepted at Thoroughbred’s discretion.

OPTION 2: You can defer the core charge. If you defer, you will not be charged for the core at the time of purchase. You will have 21 days from the time your order is received to send the core back. If the core is not received within the 21 days, your credit card will be charged for the core amount on your order. If you return your core after 21 days, you may refer to the Core Charge Timeline below as to how you will be refunded. When Core deferral (Pay Core Charge Later) is limited to payment by credit card only. ***When using PayPal or Affirm as your method of payment “Core Deferral (Pay Core Charge Later)” is not available. The core must be paid at time of purchase. ***

Core Charge Timeline

If the core is returned after 21 days, 90% of the core will be refunded.
If the core is returned after 60 days, 70% of the core will be refunded.
If the core is returned after 90 days, 50% of the core will be refunded.
After 6 months cores will be accepted at Thoroughbred’s discretion.

Core Return Procedure

Please keep all original packaging of your new item to be used for the core return.
Drain all fluids: oil, fuel, etc. out of the core before it is returned.
Place any plastic plugs or caps received on the new item back onto the core.
To insure UPS, Fed Ex, or USPS will not reject the package due to fuel or oil leakage, please wrap the core in a plastic garbage bag.
Place core inside the box.
If core return paperwork was inside the box, please complete the form and send back with the core.
Please provide a tracking number to [email protected]. Without a confirmed tracking number we cannot guarantee your core refund
If you have questions please call our core department 859-737-4966 ext. 5

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Product Details

Product Name: Suncoast Category 4 48RE Rebuild Kit
Manufacturer: Suncoast
Manufacturer Part #: SC-48-4
Thoroughbred Diesel Part #: SUNSC-48-4
Fitment Notes: 2003-2007 Dodge Cummins 48RE

Suncoast's Category 4 48RE rebuild kit includes everything necessary to rebuild your 48RE transmission. This high-performance rebuild kit is for customers seeking improvement over the stock unit along with improvements to the band, band actuation, servos, accumulator piston, torque converter, input shaft, output shaft and forward drum.

The addition of the billet intermediate servo, billet band anchor and billet band strut allows this kit to address the common know shortcomings of this 48RE transmission. This kit also comes with a new billet blueprinted 4.4 band lever. The new thrust washer kit also contains selective for setting endplay.

The triple disc billet torque converter that comes with this kit comes with a 2,000 stall speed. This comes standard with Suncoast's 48re billet triple disc torque converter (Part #: 2361848-3D), with other stall speeds available, depending on your needs. The torque converter is lined with carbon graphitic clutch material and equipped with a precision CNC machined forged billet apply piston to ensure no deflection occurs. This is an upgrade from the single disc billet converter that comes in the #SC-48-1.

This kit also includes Suncoast's one-piece billet 23-spline input shaft. This shaft is made from 300 maraging steel and is then heat treated and stress relieved to handle the additional demands of higher torque and stress loads. This shaft is precision ground to make it a true drop in replacement.

This Category 4 48RE master rebuild kit also includes a band upgrade. While some of Suncoast's other kits include a Raybestos Pro Series carbon fiber flex band, in this kit Suncoast use thier billet rigid band. This band is CNC machined from billet steel and then lined with carbon graphitic lining to ensure unmatched performance by any other manufacturer.

Suncoast's Category 4 48RE rebuild kit also includes upgrades to the flexplate. The factory 48RE flexplate is replaced with Suncoast's billet 48RE one piece unit. This new 48RE flexplate exceeds 29.3 SFI certification. This new billet one piece design is CNC machined from a single forging, and specific reliefs are machined out between the converter mounting area and the crank flange to enable minimal designed torsional flex.

We also include the addition of new apply pistons for both forward and direct. SunCoast Category 4 48RE master rebuild kits replace the factory cast pistons with new billet apply pistons. The direct piston is also included with new custom calibrated springs. The forward piston is also replaced with a new billet piece. These two improvements allow higher clamping forces without any deflection occurring. Giving a much more direct shift feel and eliminating potential cross leaks within the drum.

Another piece included in this kit is our full billet rear clutch retaining hub, made from 4140 heat-treated, stress-relieved billet steel versus the OE cast piece. The factory cast retainer is known to fail in high torsional fatigue situations such as higher line pressure, commercial use and heavy Duty towing and hauling. This new billet piece is the correction you've been looking for.

Lastly, we include a billet output shaft. Designed for higher horsepower/torque engines, this performance product has been tested in excess of 1,400 ft/lbs of torque. Shaft is machined from 300M material then Heat Treated for torsional strength and precision ground on all critical diameters.

This kit fits all 4WD 48RE transmissions.

Suncoast Category 4 48RE Rebuild Kit Features:

4 Raybestos GPZ forward frictions with steels
6 Raybestos GPZ clutches with steels
10 Raybestos overdrive clutches with steels
Custom machined overdrive pressure plate
.073 custom snap ring for forward clutch pack
High flow 48RE transmission filter
48RE front pump bushing
SunCoast custom billet carbon fiber band
SunCoast 48RE paper/rubber/gasket kit
48RE thrust washer kit
SunCoast Billet accumulator piston
SunCoast billet intermediate servo
4.4 billet band lever
Billet band strut
Billet band anchor
SunCoast Billet triple disc torque converterÊ
Billet Input Shaft
Billet Forward and Direct Piston
Billet Flexplate
Billet Output Shaft
Billet Forward Drum
For more information on Suncoast call us at 1-859-737-4966.

Reviews

Submit a question

Capable Hp rating?

Nick Dumford | 3/22/2024
700hp
What are the differences between category 3 and category 4 kits. What are the potential horse power and torque ratings of each kit. Any information will be appreciated. Thank you

Joe Stokes | 11/28/2023
· Billet Output Shaft

· Billet Forward Drum
What's the 350.00 core for on this the torque converter?

Richard Mosley | 12/4/2019
Yes, the torque convertor.

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