Fluidyne Allison 1000 High Performance Transmission Fluid Cooler 17-19 GM 6.6L Duramax L5P
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
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- Ships from Fluidyne High Performance
If you tow, haul, or use your Duramax as a daily workhorse, keeping transmission temperatures under control can make a big difference in how your truck performs and holds up over time. This Fluidyne Allison 1000 High Performance Transmission Fluid Cooler is designed for GM 6.6L L5P Duramax trucks, giving you a serious cooling upgrade over the factory cooler.
Built with aerospace-grade aluminum bar plate construction, a proprietary fin design, and one of the densest fins-per-inch layouts available, this cooler delivers over 4 times the heat exchanging capacity compared to the stock unit while maintaining minimal pressure drop. Fully welded internal splitter plates help prevent fluid contamination between hot and cold side fluids, improving durability and long-term reliability.
This direct bolt-in replacement uses the factory mounting locations for an easier installation and cleaner fit. Finished with a durable powder coat and proprietary heat-wicking compound, it is built to handle towing, hauling, hot weather, and demanding driving conditions with confidence.
If you tow, haul, or use your Duramax as a daily workhorse, keeping transmission temperatures under control can make a big difference in how your truck performs and holds up over time. This Fluidyne Allison 1000 High Performance Transmission Fluid Cooler is designed for GM 6.6L L5P Duramax trucks, giving you a serious cooling upgrade over the factory cooler.
Built with aerospace-grade aluminum bar plate construction, a proprietary fin design, and one of the densest fins-per-inch layouts available, this cooler delivers over 4 times the heat exchanging capacity compared to the stock unit while maintaining minimal pressure drop. Fully welded internal splitter plates help prevent fluid contamination between hot and cold side fluids, improving durability and long-term reliability.
This direct bolt-in replacement uses the factory mounting locations for an easier installation and cleaner fit. Finished with a durable powder coat and proprietary heat-wicking compound, it is built to handle towing, hauling, hot weather, and demanding driving conditions with confidence.
Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Diesel Power Products warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- Diesel Power Products
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–7 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Diesel Power Products
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.