93104 Transmission Oil Pan Gasket for GM 4L60E & 700R4 —

lodfGL's 93104 transmission oil pan gasket is a direct-fit replacement for GM 4L60E and 700R4 transmissions, built with a steel shim core laminated to vulcanized high-durometer rubber for a durable, leak-resistant seal.

If you’re servicing a GM 4L60E or 700R4 transmission and need a reliable pan gasket, this lodfGL 93104 replacement matches Moroso 93104 fitment and OEM-style form. The steel-shimmed laminate and 3/16" overall thickness keep the profile stable under heat and torque, while the high-durometer rubber surface resists extrusion and long-term creep. It’s designed for repeatable alignment during installation and minimizes the need for additional sealant when mating surfaces are prepared correctly.

How does this gasket improve sealing compared with a thin paper or cork gasket?

The laminated steel shim adds rigidity so the gasket maintains its shape and load distribution across the pan flange. The vulcanized high-durometer rubber layer resists compression set and extrusion, preserving the sealing bead under elevated transmission temperatures. Together these materials reduce the chance of leaks that commonly occur with softer or thinner gaskets.

• 3/16" thickness prevents over-compression and warping
• Steel shim core keeps bolt-hole alignment accurate
• Vulcanized rubber resists heat-related deformation
• OEM-equivalent dimensions for direct replacement

Will this gasket fit my GM 4L60E or 700R4 pan, and is it a true Moroso 93104 substitute?

Yes — the lodfGL 93104 is manufactured to match the dimensional profile and bolt pattern used by GM for 4L60E and 700R4 pans, making it a direct replacement for the Moroso 93104. That means bolt holes, outer contours, and sealing surface width align for easy installation without modification.

• Exact bolt-hole pattern for 4L60E and 700R4 applications
• Contoured flange fit mirrors OEM and aftermarket Moroso parts
• Drop-in replacement reduces installation time and errors

What should I do during installation to ensure the best long-term performance?

Clean and flatten both mating surfaces before fitting the gasket; remove old gasket material and any oil, dirt, or corrosion. Hand-start all pan bolts to ensure alignment with the steel shim, then torque in a crisscross pattern to the manufacturer’s spec to avoid distortion. When surfaces are clean and flat, additional sealant is typically unnecessary.

• Thoroughly clean mating surfaces; no substrate residue
• Hand-thread bolts, then torque in cross pattern to spec
• Sealant not required if surfaces are flat and uncontaminated
• Inspect for pan damage or warpage before reusing bolts

How does the material construction affect longevity under heavy use?

The combination of a rigid steel shim and vulcanized high-durometer rubber provides dimensional stability and resistance to the compression set that causes leaks over time. The full 3/16" thickness reduces the risk of cracking or tearing during repeated service cycles, making it suitable for vehicles exposed to higher temperatures or towing loads.

• Steel core prevents gasket creep under repeated torque
• High-durometer rubber resists tearing and extrusion
• Thicker profile withstands heat cycles and pressure spikes

Who is this for? The lodfGL 93104 transmission oil pan gasket is aimed at professional technicians, DIY mechanics, and fleet owners who need a dependable, OEM-equivalent replacement for GM 4L60E and 700R4 transmissions. If you value a precise fit, rigid alignment during installation, and a durable seal that holds up under heat and load, this gasket offers a cost-effective, drop-in solution that matches Moroso 93104 form and function. Contact our support team if you need fitment confirmation or assistance — we stand behind our OEM-equivalent manufacturing standards.