SPOOLOGIC Turbo Lower Oil Drain Line

The SPOOLOGIC Turbo Lower Oil Drain Line SL-350-034 connects the upper turbo oil drain to the engine oil-return connection on 2017–2026 Chevrolet Silverado 2500 3500 and GMC Sierra 2500 3500 trucks with the 6.6L Duramax L5P engine.

Features

• Connects the upper turbo oil drain to the engine oil-return connection
• Formed lower drain tube with bolted flange connections

What’s Included

• 1 turbo lower oil drain line
• 2 flange gaskets
• 4 mounting bolts

Fitment

• 2017-2026 Chevrolet Silverado GMC Sierra 2500 3500 6.6L Duramax L5P
• 2019-2026 Chevrolet Silverado 4500 5500 6500 6.6L Duramax L5D

OEM and Manufacturer References

• GM 12705525 — lower oil-return pipe reference
• GM 12737099 — oil-return pipe gasket reference
• GM 12737100 — oil-return pipe gasket reference

These references identify individual service components, not a complete-kit interchange.

1-Year Limited Warranty

Every SPOOLOGIC Turbo Lower Oil Drain Line carries a 1-Year Limited Warranty against defects in materials and workmanship for the original purchaser from the original purchase date. Coverage excludes damage caused by improper installation, contaminated or damaged connections, reused installation seals, and physical damage. Claims require dated proof of purchase. Contact SPOOLOGIC for return authorization before shipping the component for inspection. If inspection confirms a covered defect, SPOOLOGIC will replace the covered component. Customers pay warranty shipping in both directions; labor and related costs are not covered. See the SPOOLOGIC Warranty Policy for full terms.