Kirby Morgan Genuine Parts510-531 SL-17A/B Cold Water Neck Dam (Pre-’84), MediumSKU: 510-531 510-531 Neck Dam Instructions Add to quote Description Description Part # Description Qty. 510-531 SL-17A/B Cold Water Neck Dam (pre-’84), Medium 1 Related products Kirby Morgan Genuine Parts505-097 SL-27 Large Neck Ring Assembly View product Kirby Morgan Genuine PartsThe REX® Regulator Parts525-764 REX® Whisker Exhaust Kit View product Kirby Morgan Genuine PartsSuperFlow® 450 Regulator Parts525-718 Stainless Steel Balanced Regulator Rebuild Kit (for SuperFlow® 450) View product