2017-2019 Duramax Transmission Cooler Line Replacement Kit (L5P-FLU-A169)

Fits

Stop fighting the factory transmission cooler lines on your L5P. The OEM setup is mostly formed hard line with short flex sections, a pain to reroute for any custom work, and prone to rubbing against the frame, bumper, and surrounding components until the lines wear through and start leaking. Our Transmission Cooler Line Replacement Kit swaps those failure-prone hard lines out for full-length black PTFE stainless steel braided hose, terminated with anodized red AN fittings. The result is a more durable, fully flexible setup that's easier to route around modifications and finishes off the underside of your truck with a clean performance look.

Part Number: L5P-FLU-A169

Why Shop Dirty?

• Canadian-Made Performance: High-performing parts made in-house in our shop in West Kelowna and sourced from across North America with the highest quality standards.
• Born in the Shop: Our parts are engineered with real-world experience. Whether it's an OEM fix or a performance upgrade, we build what we know works. We make our parts to solve real-world problems.
• Dirty Made Quality: We aren't just designing the kits; we are installing them every day in our own shop. We use our own products every day. From the first weld to the last bolt, we build tough gear that actually fits, handles abuse, and looks the part.

• Full-length black PTFE stainless steel braided hose replaces failure-prone OEM hard lines.
• Flexible routing makes accommodating custom builds, transmission swaps, and aftermarket coolers far easier than the factory setup.
• Anodized red AN fittings deliver a clean performance look under the truck.
• Stainless braided exterior resists abrasion against the frame, bumper, and surrounding components.
• PTFE inner liner stands up to the heat and pressure of transmission fluid duty.
• Direct replacement for the 2017-2019 L5P 6.6L Duramax, no modifications required.

• 1x 39.5" Black PTFE Stainless Steel Braided Hose
• 1x 47" Black PTFE Stainless Steel Braided Hose
• 1x 89" Black PTFE Stainless Steel Braided Hose
• 6x 7/8"-14 ORB to -10 AN Fittings (Anodized Red)
• 2x Thin Sealing Washers
• 8x 15.25" Extra-Strong Nylon Cable Ties