LAFORMO Flexplate Dust Cover for GM TH350/TH400/700R4 — Black Direct-Fit Protective Housing

LAFORMO's Black Flexplate Flywheel Dust Cover is a direct-fit protective housing designed for GM rear-wheel-drive automatic transmissions, including TH350, TH400 and 700R4 units used in many 1965–1995 cars and light trucks.

This heavy-duty plastic dust cover replaces worn or missing bellhousing shields to protect the flexplate/flywheel area from road debris and dust while maintaining correct clearance for starter and transmission components. Supplied with mounting hardware, the cover fits the majority of GM rear-wheel-drive automatic transmissions made between 1965 and 1995, but it is not compatible with 4x4 applications that use external support brackets bolting to the cover.

Will this cover fit my GM TH350, TH400 or 700R4 transmission?

Yes—LAFORMO designed this dust cover to match the common bolt patterns and clearances used across most GM rear-wheel-drive automatic transmissions produced from 1965 through 1995. Confirm compatibility by checking that your vehicle is not a 4x4 application with extra support brackets that mount to the cover.

• Fits TH350, TH400, 700R4 and similar GM RWD automatics.
• Intended for cars and light duty trucks built 1965–1995.
• Not for 4x4 drivetrains that require bolted support brackets.
• Ships with mounting hardware for straightforward installation.

How durable and easy to install is the LAFORMO dust cover?

The cover is molded from quality plastic engineered for impact resistance and dimensional stability under under-hood temperatures. It’s supplied as a complete unit with hardware so you can replace a damaged cover quickly without fabricating mounts.

• 100% brand-new manufactured part with consistent dimensions.
• High-quality plastic resists road debris and minor impacts.
• Includes mounting bolts and hardware for direct replacement.
• Designed for a straightforward bolt-on installation—no welding.

What does this part protect and why is that important?

The dust cover shields the flexplate/flywheel, starter ring gear and surrounding bellhousing area from contamination, helping maintain proper starter engagement and preventing foreign material from interfering with moving parts. That protection reduces the chance of premature wear or noisy operation caused by grime or kicked-up debris.

• Covers flexplate and flywheel exposed areas from road debris.
• Helps keep starter engagement areas clean for reliable starts.
• Prevents loose material from contacting moving transmission parts.
• Maintains factory clearances to avoid interference with hardware.

Are there any vehicle types or setups where this won’t work?

Yes—vehicles with 4x4 drivetrains that use support brackets bolted to the dust cover are incompatible with this part. Also verify fitment on modified bellhousings or custom engine-transmission combinations where bolt patterns or clearances may differ.

• Not compatible with 4x4 setups that bolt supports to the cover.
• May require fit confirmation for highly modified or custom builds.
• Designed for OEM-style bellhousings; confirm bolt pattern match.
• Contact a mechanic if your application has unusual clearances.

Who is this for? If you own or restore a GM rear-wheel-drive car or light truck from the 1965–1995 era and need a clean, reliable replacement for a missing, cracked or corroded flexplate/flywheel dust cover—or if you’re finishing a transmission swap and require a direct-fit bellhousing shield—this LAFORMO part delivers a cost-effective, ready-to-install solution. It’s aimed at mechanics, restorers and DIY enthusiasts who want OEM-style protection without fabrication; avoid ordering if your vehicle is a 4x4 with special support brackets that attach to the cover.