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Drivetrain› Automatic Transmissions and Components

Sun Coast Converters

4R100 GUARDIAN 350 HP REBUILD KIT (WITHOUT CONVERTER)

$1,995.00 $1,935.15 Save $59.85

SKU: S02K SC-4R100SC-GUARDIAN-LC

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Special Order
Ships in 4–6 weeks
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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Advanced — 4+ hours

Description

The SunCoast Guardian 4R100 Rebuild Kit with Guardian Torque Converter upgrades 1999-2003 Ford 7.3L Power Stroke 4R100 transmissions for increased strength, especially with power adders. It includes a bushing kit, TransGo Tugger Kit, solenoid pack, 45-element intermediate sprag, intermediate band, and a SunCoast Guardian Torque Converter. Features Alto Red Eagle clutches with Kolene steels, heavy-duty sprags, and a TransGo HD2 Tugger Kit for improved shift quality and cooling. The Guardian torque converter is designed for heavy-duty towing/hauling with a 3-year warranty and includes a billet lockup apply piston, CNC-machined billet steel cover, and 3 carbon-graphitic clutch discs.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSun Coast Converters
Part NumberS02K SC-4R100SC-GUARDIAN-LC

Videos

How to Install a Torque Converter on a Ford 4R100/E4OD Automatic Transmission

How to Install a Torque Converter on a Ford 4R100/E4OD Automatic Transmission
Don't break your pump! How to Install a 4r100 Transmission Torque Converter in a Ford f250 f350 7.3

Don't break your pump! How to Install a 4r100 Transmission Torque Converter in a Ford f250 f350 7.3
2 Tips for Installing a 4r100 Transmission And Torque Converter Properly 7.3 Powerstroke

2 Tips for Installing a 4r100 Transmission And Torque Converter Properly 7.3 Powerstroke
Was it WORTH it?! | Testing and Review of the Suncoast Torque Converter

Was it WORTH it?! | Testing and Review of the Suncoast Torque Converter
2000 F350 7.3 Powerstroke complete fuel system install overview.

2000 F350 7.3 Powerstroke complete fuel system install overview.
Ford 7.3 and 6.0 Powerstroke Diesel FASS Fuel Filter System Lift Pump Installation Airdog Comparison

Ford 7.3 and 6.0 Powerstroke Diesel FASS Fuel Filter System Lift Pump Installation Airdog Comparison
7.3 Powerstroke Fuel System Upgrade: Sump & Pre Filter Install - NO MORE 1/4 Tank Issues!

7.3 Powerstroke Fuel System Upgrade: Sump & Pre Filter Install - NO MORE 1/4 Tank Issues!
Watch BEFORE buying: Drop-In vs. Titanium Signature Series

Watch BEFORE buying: Drop-In vs. Titanium Signature Series
7.3 Powerstroke CNC Fab 4-Line Feed Kit Install Overview

7.3 Powerstroke CNC Fab 4-Line Feed Kit Install Overview
7.3 Diesel FORD Excursion FASS Install

7.3 Diesel FORD Excursion FASS Install
Don't break your pump! How to Install a 4r100 Transmission Torque Converter in a Ford f250 f350 7.3

Don't break your pump! How to Install a 4r100 Transmission Torque Converter in a Ford f250 f350 7.3
How to Install a Torque Converter on a Ford 4R100/E4OD Automatic Transmission

How to Install a Torque Converter on a Ford 4R100/E4OD Automatic Transmission
2 Tips for Installing a 4r100 Transmission And Torque Converter Properly 7.3 Powerstroke

2 Tips for Installing a 4r100 Transmission And Torque Converter Properly 7.3 Powerstroke
1. Ford 4R100 Rebuild - Overview and Required Updates

1. Ford 4R100 Rebuild - Overview and Required Updates

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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