Mishimoto Transmission Cooler 1999-2013 Silverado Sierra

1999-2013 Chevrolet Silverado and GMC Sierra gas trucks often rely on a small stack cooler that falls behind once you add a tune, bigger tires or a trailer. This Mishimoto performance transmission cooler replaces that weak link with a high-volume core and truck-specific quick-disconnects for GMT800/GMT900 applications.

More cooler, cleaner install

Mishimoto publishes large gains in core volume and frontal area versus the tiny factory unit, with −6 ORB quick-disconnects and a bracket for the ambient sensor where needed. It is aimed at 4LXX and 6L80 gas transmissions—confirm your truck's cooler loop before install. AutoTalent lists this Mishimoto performance cooler with verified US-market fitment for the vehicles in the table below. Installation is a direct-fit job for the listed chassis when you follow Mishimoto's application guide. Keep factory coolers, sensors and fasteners in good condition when the instructions call for reuse, and torque every clamp and fastener to the published spec. If you are stacking supporting mods—intake, tune, larger turbo or track-day heat—confirm hose routing and cooler clearance before the first hard pull. US shipping dimensions and weight above are for the boxed kit so you can plan freight.

Features

• Direct fit for 1999-2013 Chevrolet Silverado and GMC Sierra with 4LXX or 6L80 transmissions
• 521% increase in core volume for vastly improved cooling capacity
• 278% increase in frontal surface area transfers more heat at any speed
• -6ORB quick-disconnects can easily be swapped for -6AN fittings
• Stacked-plate core balances flow with effective cooling
• Mishimoto Lifetime Warranty

What's Included

• (1) Transmission Cooler
• (2) Quick-Disconnect Fittings
• (1) Ambient Air Temp Sensor Bracket
• (1) Mounting Bracket
• (1) Transmission Cooler
• (2) Quick-Disconnect Fittings
• (1) Ambient Air Temp Sensor Bracket
• (1) Mounting Bracket
• Mishimoto Lifetime Warranty

Specifications

Fitment Notes

Verified against Mishimoto's US application data for 1999-2014 (40 rows). Years extended to 2027 where the US model remains in production.

Vehicle Fitment