The original holding tank for the 2006 Lexington RV is no longer available. This is common for older RV models as manufacturers often retire tank molds and suppliers change. However, Elkhart RV Parts offers a large inventory of high-quality replacement holding tanks that can fit your unit and may even exceed the original capacity. To find the best replacement, provide the exact installation space dimensions (length, width, height in inches), drain location details (center or side and which side), outlet size (usually 3 inches), and photos of the existing tank and plumbing. With this information, we can recommend a compatible replacement from our inventory to meet your needs.