Duramax Allison Transmission Cooler Lines (2004-05)- Premium DOUBLE Braided Hose (4500 PSI WP-18,000 BPSI) Chevy GMC 6.6L Duramax Transmission Lines Upgrade- CR PERFORMANCE A17: Automotive. Buy Duramax Allison Transmission Cooler Lines (2004-05)- Premium DOUBLE Braided Hose (4500 PSI WP-18, 000 BPSI) Chevy GMC 6.6L Duramax Transmission Lines Upgrade- CR PERFORMANCE A17: Cooling Lines - ✓ FREE DELIVERY possible on eligible purchases. CR PERFORMANCE 2004-2005 Chevy,GMC 6.6L Duramax Transmission Lines. Includes (3) lines and all necessary fittings, zip ties, and easy to follow instructions. . 1/2" DOUBLE Steel Braided w/abrasion resistant exterior (3X the protection to prevent against rub through or road hazards) 4500 PSI (18,000 BPSI) Premium Hose - High Quality, crimped on. yellow or silver zinc plated (1) piece hose ends are used on our Duramax transmission lines. . Includes (3) Hoses, all necessary fittings, and Detailed Instructions with Photos . MADE IN USA - CR Performance has a trusted reputation manufacturing and selling the Duramax Transmission Lines . Free 1-3 Day Expedited Shipping - Same Day ship Out if ordered by 11 AM CST Including Saturdays - Lifetime Warranty . HEAVY DUTY /2" I.D. 2004-2005 Duramax Transmission Cooler Lines for 6.6L Duramax Diesel w/Allison Transmission. Fitment on non-OEM components is not guaranteed. May need (2) M22x.5 adapters if using an aftermarket transmission cooler. . . .