SPOOLOGIC Turbo Gasket Kit

The SPOOLOGIC SL-310-023 Turbo Gasket Kit supplies replacement sealing components for turbocharger removal and installation on 2004.5–2005 Chevrolet Silverado and GMC Sierra pickups with the 6.6L Duramax LLY. The set includes upper and lower up-pipe gaskets along with the oil-drain gaskets and additional seals listed below.

Features

• Four up-pipe gaskets for both exhaust connection pairs
• Two oil-drain flange gaskets
• Includes the pictured sealing washer assemblies
• Application-specific gasket selection for turbocharger service

Sealing and Service

The up-pipes carry exhaust from both manifolds to the turbocharger. Leaks at their flange connections can leave soot deposits and reduce the exhaust energy reaching the turbine. Oil-drain gaskets seal the return path from the turbocharger. Inspect each opened connection and use a new gasket when reassembling it.

What's Included

• 2 Lower Up-Pipe Gaskets
• 2 Upper Up-Pipe Gaskets
• 2 Turbo Oil-Drain Flange Gaskets
• 4 Sealing Washer Assemblies
• 1 Additional Two-Bolt Flange Gasket, in the application-specific profile pictured

Fitment

• 2004.5–2005 Chevrolet Silverado 2500 HD 3500 HD — 6.6L Duramax LLY
• 2004.5–2005 GMC Sierra 2500 HD 3500 HD — 6.6L Duramax LLY

Installation Notes

• Preparation: Clean the mating surfaces and keep debris out of open passages.
• Inspection: Repair damaged flanges, grooves, or lines before reassembly.
• Placement: Match each seal to its connection and keep it seated during assembly.
• Tightening: Follow the factory service procedure and torque specifications.
• Leak check: Inspect the serviced connections after installation.

Related Parts

For a separate replacement set of the four up-pipe gaskets, see SPOOLOGIC Up-Pipe Gasket Kit — SL-310-029.

OEM Cross-References

• GM: 97188685 — exhaust manifold-to-up-pipe gasket
• GM: 97192618 — up-pipe-to-turbo gasket
• GM: 97208191 — turbo oil-drain gasket
• GM: 97227012 — turbo oil-drain gasket

References identify individual components. Match alternate gasket profiles to the vehicle’s original configuration; not every supplied variant is used on every application.

1-Year Limited Warranty

This SPOOLOGIC gasket set carries a one-year limited warranty against defects in materials and workmanship from the original purchase date. Contact SPOOLOGIC for return authorization before sending the product for inspection. Approved defective gaskets will be replaced at SPOOLOGIC’s discretion. The customer is responsible for all warranty shipping charges. Damage from improper installation, incorrect application, contamination, or normal wear is not covered. Labor, removal, reinstallation, towing, and downtime are excluded, subject to applicable law. See the SPOOLOGIC Warranty Policy for complete terms.