Description 2004.5 – 2005 6.6L LLY Duramax BulletProof Diesel H-Core EGR Cooler The 8th digit of the VIN will be 2 for LLY Engines This new version of the LLY EGR cooler features our patented H-Core technology. What is H-Core? Well – it’s cool and it’s something that makes EGR coolers VERY reliable! It works by using twisted sets of tubing in place of traditional straight or rigid tubes. By twisting the tubing, they are able to flex and move – greatly reducing stress on the bulkheads and seams. This also allows us to stack the tubing very close together, allowing for more tubing – and cooler EGR gas – than would be with traditional straight tubes. Features: Stainless Steel Tubing that is stronger and more resistant to fatigue and heat stress failure Patented H-Core Technology to Increase Reliability Direct Fit – Replaces GM # 97303654 Gaskets NOT Included BulletProof Diesel Lifetime Warranty $100 Core Charge *Never pay a core charge if returned within 30 days* Please Read our Core Policy
