BD Diesel Xtruded Double-Stacked Auxiliary Trans Cooler Kit 1/2 In Tube (1030606-DS-12) for 1994-2016 Cummins 5.9L / 6.7L & 2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
$1,050.95
The BD Diesel Xtruded Double-Stacked Auxiliary Trans Cooler Kit (1030606-DS-12) is a heavy-duty transmission cooling upgrade for 1994–2016 Cummins and 2001–2016 Duramax diesel engines. Made from durable aluminum with 1/2-inch tubing, its double-stacked, extruded design enhances heat dissipation and airflow, lowering transmission temperatures—especially during towing or hauling. Ideal for diesel truck owners seeking better performance and transmission durability in demanding conditions.
The BD Diesel Xtruded Double-Stacked Auxiliary Trans Cooler Kit (1030606-DS-12) is a high-performance cooling solution designed for heavy-duty applications, specifically engineered to fit 1994–2016 Cummins 5.9L and 6.7L engines, as well as 2001–2016 Duramax LB7, LLY, LBZ, LMM, and LML engines. Featuring a durable aluminum construction and 1/2-inch tubing, this double-stacked cooler provides significantly improved heat dissipation compared to stock transmission coolers. Its extruded design maximizes surface area for optimal airflow and cooling efficiency, helping to reduce transmission temperatures under load, especially when towing or hauling. This kit is ideal for diesel truck owners seeking enhanced transmission longevity and consistent performance in demanding driving conditions.
| Weight | 22.7 lbs |
|---|---|
| Dimensions | 22 × 15.6 × 10.8 in |
Fitment
1994-2016 Cummins 5.9L / 6.7L
2001-2016 Duramax LB7 / LLY / LBZ / LMM / LML
Features
- 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 pressure
- Thermostatically controlled 80-watt, 10-inch, 800 CFM electric fan
- Kits complete with all fittings, clamps, hoses and hardware
- Build-It-Yourself galvanized bracket kit for quick and easy installation – no wasting time fabricating brackets out of scrap metal
- The pre-wired loomed harness with fuse and relay comes with plug-in connectors
- Dodge 47RH / 47RE / 48RE / 68RFE – 1/2-inch Cooler Lines
- Ford 5R110/6R140 – 1/2-inch Cooler Lines)
- Double stacked cores deliver over 40,000 BTU/HR of cooling
- Over 350% temperature drop versus the factory system
- 136% better temperature drop than XTRUDED single core kit
Installation
Warning
Intended to be used in conjunction with factory transmission coolers and not as stand-alone units
