Oil Drain Back Line


We have had many requests for this item, so we decided to offer them as a convenience to customers when installing an oil separator or other accessory. Some engines do not have all the tapped access holes in the accessory case making it difficult to return oil. This tube replaces the factory Lycoming or Superior (# SL-68761) rear right side rocker box oil return line for # 3 cyl on four cyl engines, and # 5 on the six’s. This one has an extra # 4 AN male fitting attached To simplify your oil separator installation, when no oil return tap is present on your accessory case. This location is a commonly used, excellent spot for this purpose and is actually standard equipment on many GA aircraft. This item works with our standard four and six cylinder installation kits, and uses the same length oil return hose.