Mishimoto Transmission Cooler — Fits 01-03 Chevy/GMC 6.6L Duramax

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SKU: MISMMTC-DMAX-01SL
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Sale price$498.95 Regular price$549.00
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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Transmission Cooler for 2001-2003 Chevy/GMC 6.6L Duramax (LB7)

Protect your transmission from the damaging effects of heat with the Mishimoto Direct-Fit Transmission Cooler, engineered specifically for the 2001-2003 Chevrolet and GMC 6.6L Duramax (LB7) trucks. Excessive transmission temperatures can lead to premature wear and costly failures, whether you're towing heavy loads, working hard, or enjoying spirited driving. This robust cooler ensures your transmission operates within optimal temperature ranges, enhancing its longevity and performance.

Key Features & Benefits:

  • Superior Cooling Performance: Utilizes a high-efficiency stacked-plate design for maximum heat dissipation and durability.
  • Increased Capacity: Boasts a 174% larger core volume compared to the stock transmission cooler, providing significantly enhanced cooling capability.
  • Expanded Surface Area: Features a 192% greater fin surface area, allowing for more efficient heat transfer away from the transmission fluid.
  • Direct Fit Installation: Designed for a straightforward installation using included CNC-machined adapters, ensuring a leak-free connection.
  • Durable Construction: Built to withstand the demanding conditions of heavy-duty truck applications.

This Mishimoto transmission cooler is an essential upgrade for any Duramax owner who pushes their truck's limits. By maintaining lower transmission fluid temperatures, it helps prevent overheating, reduces wear on internal components, and ensures reliable performance under all conditions. Invest in the reliability and longevity of your Duramax's transmission with this high-performance cooler.

Upgrade your Duramax cooling system with Mishimoto transmission coolers from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Chevrolet Silverado 2500 HD Base
2001-2003 Chevrolet Silverado 2500 HD LS
2001-2003 Chevrolet Silverado 2500 HD LT
2001-2003 Chevrolet Silverado 3500 Base
2001-2003 Chevrolet Silverado 3500 LS
2001-2003 Chevrolet Silverado 3500 LT
2001-2002 GMC Sierra 2500 HD SL
2001-2003 GMC Sierra 2500 HD SLE
2001-2003 GMC Sierra 2500 HD SLT
2003 GMC Sierra 2500 HD WT
2001-2002 GMC Sierra 3500 SL
2001-2003 GMC Sierra 3500 SLE
2001-2003 GMC Sierra 3500 SLT
2002-2003 GMC Sierra 3500 Base

Product Details

Product Description
Part Numbers
Sizing & Fit

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Transmission Cooler for 2001-2003 Chevy/GMC 6.6L Duramax (LB7)

Protect your transmission from the damaging effects of heat with the Mishimoto Direct-Fit Transmission Cooler, engineered specifically for the 2001-2003 Chevrolet and GMC 6.6L Duramax (LB7) trucks. Excessive transmission temperatures can lead to premature wear and costly failures, whether you're towing heavy loads, working hard, or enjoying spirited driving. This robust cooler ensures your transmission operates within optimal temperature ranges, enhancing its longevity and performance.

Key Features & Benefits:

  • Superior Cooling Performance: Utilizes a high-efficiency stacked-plate design for maximum heat dissipation and durability.
  • Increased Capacity: Boasts a 174% larger core volume compared to the stock transmission cooler, providing significantly enhanced cooling capability.
  • Expanded Surface Area: Features a 192% greater fin surface area, allowing for more efficient heat transfer away from the transmission fluid.
  • Direct Fit Installation: Designed for a straightforward installation using included CNC-machined adapters, ensuring a leak-free connection.
  • Durable Construction: Built to withstand the demanding conditions of heavy-duty truck applications.

This Mishimoto transmission cooler is an essential upgrade for any Duramax owner who pushes their truck's limits. By maintaining lower transmission fluid temperatures, it helps prevent overheating, reduces wear on internal components, and ensures reliable performance under all conditions. Invest in the reliability and longevity of your Duramax's transmission with this high-performance cooler.

Upgrade your Duramax cooling system with Mishimoto transmission coolers from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Chevrolet Silverado 2500 HD Base
2001-2003 Chevrolet Silverado 2500 HD LS
2001-2003 Chevrolet Silverado 2500 HD LT
2001-2003 Chevrolet Silverado 3500 Base
2001-2003 Chevrolet Silverado 3500 LS
2001-2003 Chevrolet Silverado 3500 LT
2001-2002 GMC Sierra 2500 HD SL
2001-2003 GMC Sierra 2500 HD SLE
2001-2003 GMC Sierra 2500 HD SLT
2003 GMC Sierra 2500 HD WT
2001-2002 GMC Sierra 3500 SL
2001-2003 GMC Sierra 3500 SLE
2001-2003 GMC Sierra 3500 SLT
2002-2003 GMC Sierra 3500 Base

Product Details

Product Description

About Mishimoto

Mishimoto is the modern leader in performance cooling — aluminum radiators, oil coolers, intercoolers, and silicone hoses for street, track, and tuner builds. Lifetime warranty on every Mishimoto product, with engineering tested at Bondurant and on track teams.

Watch in action

Mishimoto Transmission Cooler for 2001-2003 Chevy/GMC 6.6L Duramax (LB7)

Protect your transmission from the damaging effects of heat with the Mishimoto Direct-Fit Transmission Cooler, engineered specifically for the 2001-2003 Chevrolet and GMC 6.6L Duramax (LB7) trucks. Excessive transmission temperatures can lead to premature wear and costly failures, whether you're towing heavy loads, working hard, or enjoying spirited driving. This robust cooler ensures your transmission operates within optimal temperature ranges, enhancing its longevity and performance.

Key Features & Benefits:

  • Superior Cooling Performance: Utilizes a high-efficiency stacked-plate design for maximum heat dissipation and durability.
  • Increased Capacity: Boasts a 174% larger core volume compared to the stock transmission cooler, providing significantly enhanced cooling capability.
  • Expanded Surface Area: Features a 192% greater fin surface area, allowing for more efficient heat transfer away from the transmission fluid.
  • Direct Fit Installation: Designed for a straightforward installation using included CNC-machined adapters, ensuring a leak-free connection.
  • Durable Construction: Built to withstand the demanding conditions of heavy-duty truck applications.

This Mishimoto transmission cooler is an essential upgrade for any Duramax owner who pushes their truck's limits. By maintaining lower transmission fluid temperatures, it helps prevent overheating, reduces wear on internal components, and ensures reliable performance under all conditions. Invest in the reliability and longevity of your Duramax's transmission with this high-performance cooler.

Upgrade your Duramax cooling system with Mishimoto transmission coolers from GGCRACING.

Vehicle Fitment

Years Make Model Trim
2001-2003 Chevrolet Silverado 2500 HD Base
2001-2003 Chevrolet Silverado 2500 HD LS
2001-2003 Chevrolet Silverado 2500 HD LT
2001-2003 Chevrolet Silverado 3500 Base
2001-2003 Chevrolet Silverado 3500 LS
2001-2003 Chevrolet Silverado 3500 LT
2001-2002 GMC Sierra 2500 HD SL
2001-2003 GMC Sierra 2500 HD SLE
2001-2003 GMC Sierra 2500 HD SLT
2003 GMC Sierra 2500 HD WT
2001-2002 GMC Sierra 3500 SL
2001-2003 GMC Sierra 3500 SLE
2001-2003 GMC Sierra 3500 SLT
2002-2003 GMC Sierra 3500 Base

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