ZONFANT Engine Oil Pan & Pump Gasket Set for GM 4.8L–6.2L Vortec — OE-fit, Silica Seal

This kit bundles a valve cover-style oil pan gasket (OS30693R) and an oil pump gasket (B32790) in one package, designed to replace several OE reference numbers for Chevy, GMC, Cadillac, and Buick vehicles. The components are molded from high-grade sealing compound and shaped to match original profiles so you can return the engine to a factory-like seal without expensive dealer parts. The set ships new and includes a one-year warranty, plus customer support for fitment or installation questions.

Which vehicles and engines will this gasket set fit?

This set fits many GM vehicles equipped with 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L Vortec family engines across model years spanning late 1990s through 2019 depending on model. Check the list of supported models—Chevy, GMC, Cadillac and Buick applications are included—and compare the OE numbers before ordering to ensure compatibility.

• Common Chevy fits: Silverado (1500/2500/3500), Tahoe, Suburban, Avalanche, Camaro, Corvette, Express vans.
• GMC models: Sierra, Yukon, Savana, Sierra HD and other truck/van variants.
• Cadillac and Buick: Escalade family and CTS plus Rainier where applicable.
• Cross-reference part numbers like #12612350, OS30693R, PG3165, and B32790 to confirm match.

How does this gasket set improve a leaking oil pan or pump area?

The gaskets are formed from a durable silica-based sealing compound that resists oil soak and temperature cycles, recreating a continuous barrier where the pan and pump meet the block. Installing new gaskets eliminates hardened, cracked, or compressed seals that commonly cause seepage, helping to stop drips and reduce contaminant entry.

• Silica gel composition maintains elasticity and resists oil breakdown.
• Precision-molded profile follows OEM sealing surfaces for tight contact.
• Replaces worn OE numbers to restore original sealing clearances.
• Helps prevent oil leakage and maintains proper lubrication sump integrity.

What should I know about installation and compatibility before buying?

Installation is straightforward for anyone comfortable with basic engine service: drain oil, remove the pan and pump components, clean mating surfaces, then install the new gaskets following torque specs. Confirm the engine displacement and OEM part references listed on your vehicle and inspect the mating surfaces for damage; damaged flanges or warped pans may need repair or replacement for a reliable seal.

• Drain oil and work on a cooled engine to avoid burns and contamination.
• Clean all sealing surfaces of old gasket material and oil residue thoroughly.
• Use manufacturer torque values and tightening sequence for the oil pan.
• Replace any damaged hardware or corroded fasteners for best results.

Who is this kit intended for? DIY mechanics, independent repair shops, and fleet technicians who service GM Vortec engines and need a cost-effective, OEM-replacement style gasket solution. It's suitable for owners repairing oil leaks, performing engine bottom-end maintenance, or replacing the oil pump where the pump-to-pan seal must be renewed. If you maintain Chevy, GMC, Cadillac, or Buick trucks, vans, or performance cars listed in the compatibility section and want a direct-fit gasket set with a one-year warranty, this kit is designed for you.

Note: Always verify fitment against your vehicle's year, engine size, and OEM part numbers before purchase. If you are unsure about compatibility or installation, contact support for guidance.