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Transmission Cooling
Duramax 2006-2010 Radiator & Transmission Cooler Ultimate Bundle Mishimoto MMB-DMAX-002
$2,479.95
Fits: LLY|LBZ|LMM Duramax 2006-2010
Duramax 2006-2010 X-Tra Cool Direct-Fit Transmission Oil Cooler XDP XD310
$258.95
Fits: Duramax 2006-2010
Xtruded Double-Stacked Auxiliary Trans Cooler Kit 1/2 In Tube BD 1030606-DS-12
$999.95
Fits: Cummins 1994-2016 & GM 2001-2016
Xtruded Double-Stacked Auxiliary Trans Cooler Kit 5/8 In Tube BD 1030606-DS-58
$1,072.95
Fits: Cummins 1994-2016 & GM 2001-2016
Universal Transmission Fluid Cooler Mishimoto MMTC-TF-1575
$88.95
Fits: Universal - 15" X 7.5" X 0.75" (3/8" Fittings)
LBZ|LMM Duramax Allison Transmission Cooler Lines Fleece FPE-TL-LBZ-LMM
$289.99
Fits: LBZ/LMM Duramax 2006-2010
Duramax Allison 1000 Transmission Cooler Line Clip - Blue GM 88960976
$11.43
Fits: Duramax 2001-2010 | 2017-2019
Duramax 03-19 Allison 1000 Transmission Cooler Line Fitting AcDelco 88996645
$50.84
Fits: 2500/3500HD Silverado | Sierra 2003-2019
LBZ|LMM Duramax Transmission Cooler Line Kit Mishimoto MMTCL-DMAX-06
$349.95
Fits: LBZ|LMM Duramax 2006-2010
Transmission Cooling for Your LMM Duramax Silverado & Sierra
Heat is the number one killer of the Allison automatic behind your LMM Duramax, especially under heavy towing. Shop direct-fit coolers from Mishimoto and XDP, or step up to BD's Xtruded double-stacked auxiliary coolers for serious cooling capacity — with universal options available for custom setups. For a complete solution, the Mishimoto Radiator & Transmission Cooler Ultimate Bundle combines both systems in one premium package. Round out your install with Allison 1000 cooler lines, fittings, and connector clips from Fleece, AcDelco, ATS, and GM, correctly matched to your LBZ or LMM build. Keep fluid temps down, and your Allison transmission will thank you for years of towing to come.
Heat is the number one killer of the Allison automatic behind your LMM Duramax, especially under heavy towing. Shop direct-fit coolers from Mishimoto and XDP, or step up to BD's Xtruded double-stacked auxiliary coolers for serious cooling capacity — with universal options available for custom setups. For a complete solution, the Mishimoto Radiator & Transmission Cooler Ultimate Bundle combines both systems in one premium package. Round out your install with Allison 1000 cooler lines, fittings, and connector clips from Fleece, AcDelco, ATS, and GM, correctly matched to your LBZ or LMM build. Keep fluid temps down, and your Allison transmission will thank you for years of towing to come.