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Thumbnail Filmstrip of L5P Duramax Transmission Cooler - Mishimoto MMTC-DMAX-20 Images
Towing and heavy hauling push transmission fluid temps up fast on a 2020-2026 L5P Duramax, and heat is the number one thing that wears out a transmission. The factory cooler is sized for stock duty, so trucks that work hard can use more cooling capacity.
The Mishimoto MMTC-DMAX-20 replaces the stock transmission cooler with a much bigger all-aluminum tube-and-fin core. It hooks up to the factory transmission lines, so there are no adapters to buy and no cutting or drilling.
What you get:
- One new Mishimoto aluminum transmission cooler, silver finish
- Two M6 studs
- About 245% more core volume, 137% more frontal area, and 173% more fin area than the stock cooler
- Bolts in using the factory line connections
- Fits 2020-2026 Chevrolet/GMC L5P Duramax with the Allison 10L1000 10-speed
- Mishimoto Lifetime Warranty
Specs:
- Core construction: tube-and-fin aluminum
- Rows: 20
- Core size: 33.4 in long x 8.3 in tall x 1.3 in thick
- Transmission: Allison 10L1000 10-speed
A smart upgrade for L5P owners who tow, haul, or run added power and want to keep transmission temps under control. Order today and give your Allison more cooling headroom. Verify fitment for your truck before ordering.
Towing and heavy hauling push transmission fluid temps up fast on a 2020-2026 L5P Duramax, and heat is the number one thing that wears out a transmission. The factory cooler is sized for stock duty, so trucks that work hard can use more cooling capacity.
The Mishimoto MMTC-DMAX-20 replaces the stock transmission cooler with a much bigger all-aluminum tube-and-fin core. It hooks up to the factory transmission lines, so there are no adapters to buy and no cutting or drilling.
What you get:
One new Mishimoto aluminum transmission cooler, silver finish
Two M6 studs
About 245% more core volume, 137% more frontal area, and 173% more fin area than the stock cooler
Bolts in using the factory line connections
Fits 2020-2026 Chevrolet/GMC L5P Duramax with the Allison 10L1000 10-speed
Mishimoto Lifetime Warranty
Specs:
Core construction: tube-and-fin aluminum
Rows: 20
Core size: 33.4 in long x 8.3 in tall x 1.3 in thick
Transmission: Allison 10L1000 10-speed
A smart upgrade for L5P owners who tow, haul, or run added power and want to keep transmission temps under[...]
Towing and heavy hauling push transmission fluid temps up fast on a 2020-2026 L5P Duramax, and heat is the number one thing that wears out a transmission. The factory cooler is sized for stock duty, so trucks that work hard can use more cooling capacity.
The Mishimoto MMTC-DMAX-20 replaces the stock transmission cooler with a much bigger all-aluminum tube-and-fin core. It hooks up to the factory transmission lines, so there are no adapters to buy and no cutting or drilling.
What you get:
- One new Mishimoto aluminum transmission cooler, silver finish
- Two M6 studs
- About 245% more core volume, 137% more frontal area, and 173% more fin area than the stock cooler
- Bolts in using the factory line connections
- Fits 2020-2026 Chevrolet/GMC L5P Duramax with the Allison 10L1000 10-speed
- Mishimoto Lifetime Warranty
Specs:
- Core construction: tube-and-fin aluminum
- Rows: 20
- Core size: 33.4 in long x 8.3 in tall x 1.3 in thick
- Transmission: Allison 10L1000 10-speed
A smart upgrade for L5P owners who tow, haul, or run added power and want to keep transmission temps under control. Order today and give your Allison more cooling headroom. Verify fitment for your truck before ordering.