{"product_id":"mishimoto-99-13-chevrolet-silverado-gmc-sierra-transmission-cooler","title":"Mishimoto Transmission Cooler 99-13 Chevrolet Silverado \/ GMC Sierra","description":"\u003ch3\u003eMishimoto Transmission Cooler 99-13 Chevrolet Silverado \/ GMC Sierra | 521% Larger Core | Performance Transmission Cooler\u003c\/h3\u003e\n\n\u003ch4\u003eOverview\u003c\/h4\u003e\n\u003cp\u003eThe Mishimoto Transmission Cooler for 1999-2013 Chevrolet Silverado and GMC Sierra trucks is engineered to combat one of the most critical threats to transmission longevity: excessive heat. Whether your GMT800 or GMT900 platform truck serves as a heavy-duty tow vehicle, a hardworking fleet truck, or a daily driver, maintaining optimal transmission temperatures is essential to prevent premature wear and costly repairs. This cooler is designed specifically to enhance cooling capacity and ensure reliable transmission performance under demanding conditions.\u003c\/p\u003e\n\u003cp\u003eBuilt around a robust stacked-plate core design, this Mishimoto cooler stands out with its massive size—521% larger than the factory unit—and a 278% increase in frontal area. The internal and external louvered fins optimize airflow and fluid circulation, maximizing heat dissipation. Precision-machined -6ORB quick-disconnect fittings allow for seamless integration with stock transmission lines or the option to upgrade to -6AN lines, while the included relocation bracket preserves the ambient air temperature sensor’s functionality. This thoughtful engineering reflects Mishimoto’s commitment to durable, high-performance cooling solutions.\u003c\/p\u003e\n\u003cp\u003eFor Silverado and Sierra owners, this transmission cooler translates to tangible benefits: improved transmission temperature control during towing, off-road, or stop-and-go driving, which extends transmission life and enhances drivetrain reliability. The adjustable mounting bracket simplifies installation, making it accessible for enthusiasts who want to upgrade their truck’s cooling system without extensive modifications. Backed by Mishimoto’s Lifetime Warranty with Accident Protection, this cooler offers peace of mind alongside proven performance.\u003c\/p\u003e\n\n\u003ch4\u003eFeatures \u0026amp; Specifications\u003c\/h4\u003e\n\u003cp\u003eThis Mishimoto transmission cooler is engineered for 1999-2013 Chevrolet Silverado and GMC Sierra trucks and features a stacked-plate core design that is 521% larger than stock. Constructed from durable aluminum, it delivers superior heat dissipation for truck owners seeking reliable transmission cooling under heavy load and demanding conditions.\u003c\/p\u003e\n\u003cul style=\"list-style:none;padding:0;margin:0;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Mishimoto\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProduct:\u003c\/strong\u003e Transmission Cooler 99-13 Chevrolet Silverado \/ GMC Sierra\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e MMTC-GMT-99\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e 1999-2013 Chevrolet Silverado \/ GMC Sierra\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Aluminum\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Black powder coat\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eConstruction:\u003c\/strong\u003e Stacked-plate core with louvered fins\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOrigin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCore Size Increase:\u003c\/strong\u003e 521% larger than stock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrontal Area Increase:\u003c\/strong\u003e 278% larger than stock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFittings:\u003c\/strong\u003e -6ORB quick-disconnects, compatible with -6AN lines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncluded Accessories:\u003c\/strong\u003e Ambient air temperature sensor relocation bracket, adjustable mounting bracket\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eKey Benefits\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePerformance:\u003c\/strong\u003e Significantly reduces transmission temperatures under heavy towing and low-speed conditions to prevent overheating.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDurability:\u003c\/strong\u003e Robust stacked-plate aluminum core resists corrosion and damage for long-lasting reliability.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFitment:\u003c\/strong\u003e Designed specifically for 1999-2013 Silverado and Sierra trucks ensuring direct compatibility and easy installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEase of Installation:\u003c\/strong\u003e Adjustable mounting bracket and quick-disconnect fittings simplify the upgrade process.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFunctionality:\u003c\/strong\u003e Retains full ambient air temperature sensor operation with included relocation bracket.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Lifetime Warranty with Accident Protection provides confidence in product longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eWhat's Included\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Mishimoto Transmission Cooler for 99-13 Chevrolet Silverado \/ GMC Sierra\u003c\/li\u003e\n  \u003cli\u003e2× -6ORB quick-disconnect fittings\u003c\/li\u003e\n  \u003cli\u003e1× Ambient air temperature sensor relocation bracket\u003c\/li\u003e\n  \u003cli\u003e1× Adjustable mounting bracket\u003c\/li\u003e\n  \u003cli\u003eInstallation instructions\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eInstallation \u0026amp; Compatibility\u003c\/h4\u003e\n\u003cp\u003eInstallation of the Mishimoto transmission cooler is straightforward and can typically be completed within an hour using basic hand tools. The adjustable mounting bracket allows for flexible placement in the engine bay, and the quick-disconnect fittings enable easy connection to stock transmission lines or optional -6AN lines for custom setups. No major modifications are required, making this a DIY-friendly upgrade for most Silverado and Sierra owners. Maintaining the ambient air temperature sensor’s function is ensured by the included relocation bracket. This cooler is compatible with all 1999-2013 GMT800 and GMT900 Chevrolet Silverado and GMC Sierra models, but verifying fitment for your specific year and trim is recommended.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProfessional Installation:\u003c\/strong\u003e Recommended for those unfamiliar with transmission line work\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModifications Required:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVerify Compatibility:\u003c\/strong\u003e Confirm fitment for your specific year and trim level\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eShop with confidence at Subimods—your Subaru parts specialists.\u003c\/p\u003e","brand":"Mishimoto","offers":[{"title":"Default Title","offer_id":46677411725487,"sku":"MMTC-GMT-99","price":399.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/3598\/4815\/files\/mishimoto-transmission-cooler-99-13-chevrolet-silverado-gmc-sierra-mmtc-gmt-99-7478200.jpg?v=1776331824","url":"https:\/\/subimods.com\/products\/mishimoto-99-13-chevrolet-silverado-gmc-sierra-transmission-cooler","provider":"Subimods.com","version":"1.0","type":"link"}