STL010 Transmission Cooler Bypass Valve Kit – Upgrade for GM 6L80/90, 8L80/90, 10L90 (2014+). Thermal bypass improves cooling. Fits 6L80 & more. Superior Solutions Bypass Kit.

Achilioson

STL010 Transmission Cooler Bypass Valve Kit – Upgrade for GM 6L80/90, 8L80/90, 10L90 (2014+). Thermal bypass improves cooling. Fits 6L80 & more. Superior Solutions Bypass Kit.

Name: STL010 Transmission Cooler Bypass Valve Kit – Upgrade for GM 6L80/90, 8L80/90, 10L90 (2014+). Thermal bypass improves cooling. Fits 6L80 & more. Superior Solutions Bypass Kit.
Brand: Achilioson
SKU: B0FC2HMWW7
Price: 19.99 USD
Availability: InStock

✅ In stock

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0/100

Current Price

$19.99

Listed $19.99

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Price verified Oct 28, 2026 9:25 AM · Prices & availability subject to change

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📝 Product Overview

🏪 Sold by Achilioson Direct

📦 Fulfillment Fulfilled by Amazon

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Product Details

✓【Perfect Fit for 6L80/8L90/10L90】This STL010 cooler flow bypass valve kit is a direct replacement for OE# STL010, compatible with 2014-Up GM 6L80/6L90E transmissions (Cadillac, Chevy, GMC) and 2016-Up 8L80/8L90E/10L90 models (Trucks & SUVs). It functions as a 6L80 thermostat bypass kit, making it ideal for towing, performance upgrades, or overheating prevention.

✓【20% Cooler Transmission Temperatures】 The thermal bypass valve 6L80 design eliminates factory thermostat delays, delivering continuous cooler flow without warm-up wait, achieving up to 20% lower operating temperatures. This significantly reduces overheating risk under heavy loads while extending ATF(Automatic Transmission Fluid) lifespan by reducing fluid degradation and wear.

✓【OEM-Quality Upgrade】 Unlike fragile stock components, this transmission bypass 6L80 alternative features precision-machined materials with built-in safety bypass for pressure regulation. Rigorously tested to exceed OEM durability standards.

✓【Simple Plug-and-Play Installation】This 6L80 thermostat bypass kit features a user-friendly design that enables effortless installation with basic hand tools.

✓【Trusted Cooling Solution】Provides instant fluid level verification without warm-up cycle, outperforms factory STL010 valves, and comes with satisfaction guarantee for confident purchasing.