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Thoroughbred Sku #: SUN6R140-GUARDIAN-CRE
$1,989.75
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.
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
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 Return Procedure
2011 - 2019 Ford F250
2011 - 2019 Ford F350
2011 - 2019 Ford F450
2011 - 2019 Ford F550
Product Name: Suncoast Guardian 6R140 Torque Converter Manufacturer: Suncoast Manufacturer Part #: 6R140-GUARDIAN Thoroughbred Diesel Part #: SUN6R140-GUARDIAN Fitment Notes: 2011-2019 Ford Powerstroke
The Ford 6R140 platform was designed and built in-house by Ford Motor Company. With a deep first gear (3.97:1), double overdrive, and a one-piece deep skirt case it is easy to see why the 6R140 transmission is such a workhorse.
Ford, when designing the 6R140, also added Sinter-brazed gear carriers and a dual media filter that can extend service intervals up to 150,000 miles.
The 6R140 Transmission also has an integrated live PTO with a higher torque capacity than its Allison counterpart, while coming in at a stealthy 25lbs lighter, as well.
Captive clutch failure in the Ford 6R140 is a chronic problem that is difficult to address with stock components or traditional methods.
Unlike most lockup converters, the 6R140 clutch does not engage the front cover - it moves away from the engine block and engages a stamped, steel backing plate, which is relatively thin and prone to flex. SunCoast addresses these issues by using a custom rigid backing plate that reduces deflection, improving apply conformity. This process provides a more durable reaction surface than OE, improving longevity and reliability for years to come.
Another weak point is the OE clutch, which is held together by a set of small, weak leaf springs. These springs are often broken or on the verge of breaking, causing the OE steel clutch plates to break loose and gouge the cover splines. Clutch failure occurs when damage and debris become severe, a particularly frequent issue in heavy-Duty trucks that put massive stress on converter components. SunCoast improves the factory spring system on this 6R140 torque converter with a much more robust system, while also utilizing our ZERO-DRAG technology.
This new 6R140 torque converter is a perfect replacement for customers who do a lot of heavy towing or work out of their vehicles and put reliability as a priority.
Suncoast Guardian Torque Converter Features:
Why Choose SunCoast? Our products are engineered for superior strength, reliability, and optimized performance under heavy-duty conditions. Whether you're towing, racing, or daily driving, SunCoast ensures your transmission components deliver maximum durability and efficiency.
Shop SunCoast Diesel Products Today! Experience unmatched quality and innovation with SunCoast's industry-leading parts. Upgrade your diesel performance with confidence.