Heating and Cooling› Heaters

Superior

Thermal Control Bypass Valve

$90.00

SKU: STL009

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
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Easy — 1–2 hours

Overview

The Superior STL009 is a Sure-Cool Cooler Flow Control Valve designed for Ford 6R60, 6R75, and 6R80 transmissions. This valve offers full-time cooler flow, resulting in lower average fluid temperatures and includes a high-pressure safety bypass into the lube circuit. It also allows for immediate and accurate fluid level checks without a warm-up cycle, saving technician time.
Show original supplier description
The Superior STL009 Sure-Cool Thermal Control Bypass Valve is an upgrade for Ford 6R60, 6R75, and 6R80 transmissions manufactured between 2006 and 2016. This valve, made in the USA, addresses the limitations of the OEM wax pellet system, which can default to a cooler flow OFF state, leading to transmission overheating. Unlike the OEM system that requires a preheat cycle to engage cooler flow, the Sure-Cool system defaults to cooler flow ON. This ensures instant fill and air purge of the cooler and lines, allowing for accurate fluid level checks during initial start-up after repairs without a lengthy warm-up. This not only saves technician time but also allows installers to avoid handling hot transmissions. The STL009 maintains stable ATF operating temperatures around 160 degrees Fahrenheit under working conditions, extending fluid life and preventing over-temp malfunctions. It also features a crucial safety bypass. If cooler lines become blocked, the Sure-Cool system immediately reroutes flow directly into the lube circuits, maintaining essential lubrication to the transmission's components and preventing catastrophic failure. It is compatible with the 6R60 Explorer, 6R75 Expedition/Navigator, and 6R80 Mustang/F-150 models from 2006-2016 and includes US Patent 9,249,875 B1.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandSuperior
Part NumberSTL009
CategoryHeating and Cooling
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Returns & Fitment

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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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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