View our Black Friday Specials! Coupon Code: BlackFriday
Looking for aftermarket parts to modify or upgrade your 2003 Chevrolet Silverado 3500 with transmission coolers? At Tunersports.com we carry a huge selection of the top name brand performance transmission cooler parts and accessories for your Silverado 3500.
Whether you have a 2003 Chevrolet Silverado 3500 in Base to LT trim we have you covered. We have 6 transmission coolers available parts to mod your Silverado 3500. All parts have free shipping to the Continental US 48 States.
 IN STOCK - DROPSHIPS 1030606-5/822% more cooling over other designs; 200 Micro Extruded passages; Large surface area to transfer heat for external air flow cooling; Turbulent oil flow design promotes a more complete cooling; Large 5/8-inch ports prevents inlet/outlet restriction; Furnace brazed rails have been tested to 300psi of ... BD Diesel Xtruded Trans Oil Cooler - 5/8 inch Cooler Lines 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS / LT $699.95 |
 IN STOCK - DROPSHIPS 1030606-DS-58Large surface area to transfer heat for external air flow cooling; Turbulent oil flow design promotes a more complete cooling; Large 5/8-inch ports prevents inlet/outlet restriction; Furnace brazed rails have been tested to 300psi of pressure; Thermostatically controlled 80-watt, 10-inch, 800 CFM el... BD Diesel Xtrude Double Stacked Transmission Cooler Kit - Universial 5/8in Tubing 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS / LT $1,019.95 |
 IN STOCK MMTC-DMAX-01SLThere's no greater enemy for a transmission than heat. Whether your 2001-2003 Chevy/GMC 6.6L Duramax is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the drag-strip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct... Mishimoto 01-03 Chevrolet / GMC 6.6L Duramax (LB7) Transmission Cooler 2001-2003 Chevrolet Silverado 3500 Base / LS / LT $435.95 SALE VIEW PRICE IN CART |
 IN STOCK MMTC-DMAX-03SLThere's no greater enemy for a transmission than heat. Whether your 2003-2005 Chevy/GMC 6.6L Duramax is a dedicated tow vehicle, hardworking fleet truck, or a daily driver with a liking for the drag-strip, you need to ensure that your transmission runs cool. Luckily, Mishimoto has developed a direct... Mishimoto 03-05 Chevrolet / GMC 6.6L Duramax (LB7/LLY) Transmission Cooler 2003-2005 Chevrolet Silverado 3500 Base / LS / LT $435.95 SALE VIEW PRICE IN CART |
 IN STOCK MMTC-GMT-99Mishimoto 99-13 Chevrolet Silverado / GMC Sierra Transmission Cooler 2001-2005 Chevrolet Silverado 3500 Base 2001-2006 Chevrolet Silverado 3500 LS / LT $349.95 SALE VIEW PRICE IN CART |
 IN STOCK MMTCL-DMAX-01Every truck owner knows that it doesn't matter how powerful or reliable your engine is if you can't get any power to the wheels. The transmission mated to your 2001-2005 LB7/LLY Duramax is essential to everything your truck does, and keeping it cool is crucial. Upgrading your transmission cooler wit... Mishimoto 01-05 Chevrolet/GMC 6.6L Duramax (LB7/LLY) Transmission Cooler Line Kit 2001-2005 Chevrolet Silverado 3500 Base / LS / LT $321.95 SALE VIEW PRICE IN CART |