Mishimoto Transmission Cooler Line Kit for 2001-2005 Chevrolet/GMC Silverado/Sierra 2500 HD/3500 (6.6L)

Fits 2001-2005 Chevrolet Silverado and GMC Sierra 2500 HD/3500 (6.6L Duramax LB7/LLY).

Protect your Allison transmission and ensure reliable fluid transfer with the Mishimoto Transmission Cooler Line Kit. Factory transmission lines are a known failure point on the Duramax platform, often developing leaks at the crimp joints over time. This performance kit replaces those vulnerable OE lines with heavy-duty, nylon-braided hoses designed to handle the high pressures and temperatures of heavy towing and performance driving.

These lines feature a durable PTFE inner liner that is exceptionally resistant to oil and heat. To prevent expansion and provide superior abrasion resistance, the lines are encased in a high-strength nylon braid. Each hose is terminated with -10AN fittings to provide a secure, leak-free connection that outperforms standard factory clips. With a working pressure of 2,000 psi and a burst pressure of 6,000 psi, this kit is engineered for a lifetime of service.

• Direct fit for 2001-2005 GM 6.6L Duramax (LB7/LLY) trucks
• PTFE inner liner offers maximum heat and oil resistance
• High-strength nylon outer braid prevents line expansion and abrasion
• Secure -10AN fittings for a reliable, leak-free seal
• Working Pressure: 2,000 psi
• Burst Pressure: 6,000 psi
• Includes all necessary lines for a complete installation
• Mishimoto Lifetime Warranty
• Manufacturer Part Number: MMTCL-DMAX-01