LOSTAR Flexplate Flywheel Dust Cover for GM Turbo 350/400 & 700R4 (1965–1995) — Black Molded Plastic, Starter Protection

LOSTAR Flexplate Flywheel Dust Cover is a black, drop-in protective shield designed to keep dust, road debris, and contaminants away from the flexplate and starter area on most GM RWD automatic transmissions from 1965–1995.

This molded plastic dust cover replaces a worn or missing flexplate shield on Turbo 350, Turbo 400, TH350, TH400 and many 700R4 applications. Engineered for long service life, it provides a barrier that helps preserve the starter, flexplate, and surrounding components from abrasive particles and splatter. Installation may require minor starter modifications depending on your vehicle’s starter style, and the cover works with the majority of two-wheel-drive GM cars and light-duty trucks, but not 4x4s with bolted supports.

Will this cover fit my GM transmission and model year?

LOSTAR’s cover is intended for GM rear-wheel-drive automatic transmissions manufactured between 1965 and 1995 and is compatible with most Turbo 350/400 and 700R4 setups. Because vehicle hardware and starter designs vary, you may need to adjust or modify the starter mounting to clear the cover. It is not suitable for four-wheel-drive models that use supports bolted to the cover.

• Fits TH350, TH400, Turbo 350, Turbo 400, 700R4 in most RWD GM cars and light trucks
• Compatible model years: 1965–1995 (check starter clearance)
• Not compatible with 4x4 applications using bolted support brackets

How durable and protective is this dust cover?

The cover is molded from durable plastic formulated to resist road debris, dirt, and common contaminants. Each unit is produced under quality control to ensure consistent fit and performance, offering reliable protection for the flexplate and starter area without adding significant weight. It’s a practical replacement for brittle, broken, or missing OEM covers.

• High-quality plastic construction for long service life
• Shields flexplate, starter area, and surrounding components from debris
• Tested during production to meet consistent standards

What’s included and are there part numbers or guarantees?

The package comes with one flexplate flywheel dust cover and mounting hardware ready for installation. LOSTAR lists OEM reference number M463D for cross-referencing and provides a one-year quality guarantee. If you have fitment questions, contact the seller to confirm compatibility before installation.

• Includes: 1 dust cover plus mounting hardware
• OEM reference: M463D for parts lookup
• One-year quality guarantee and customer support

Who is this for? This LOSTAR dust cover is aimed at DIY mechanics, restoration enthusiasts, and professional technicians restoring or maintaining classic GM rear-wheel-drive cars and light trucks (1965–1995) with Turbo 350/400 or 700R4 transmissions. It’s particularly useful when the original cover is cracked, missing, or no longer protecting the flexplate area. Before ordering, verify starter clearance and confirm your vehicle is not a 4x4 application that uses bolted support brackets.