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GM ATF Refill Adapter - Mityvac

Part #: MVA590

The Mityvac MVA590 GM ATF Refill Adapter is an essential tool for professional technicians and mechanics performing automatic transmission fluid service on late-model GM vehicles. This adapter provides a reliable connection to the transmission fill port, enabling efficient and clean refilling or topping off of automatic transmission fluid, particularly in systems where a traditional dipstick has been eliminated. Its robust design ensures a secure and leak-free connection, streamlining a critical maintenance procedure.

Key Features

  • GM-Specific Compatibility: Designed for use with GM 6-speed 6L80 and 6L90 automatic transmissions.
  • Precision Threading: Features an M12 x 1.75 thread for a secure fit into the transmission fill port.
  • Durable Construction: Manufactured from high tolerance zinc-plated steel, ensuring longevity and resistance to corrosion in a demanding shop environment.
  • Quick-Change Coupler: Equipped with a Mityvac-style quick-change coupler for rapid attachment and detachment to compatible fluid dispensing equipment.
  • OEM Equivalent: Comparable to GM tool DT-47784, providing an equivalent level of performance and fit.

Applications

This GM ATF refill adapter is specifically engineered for a range of GM truck and SUV models, as well as other vehicles utilizing the specified 6-speed automatic transmissions. Common applications include servicing transmissions in GM models such as the Avalanche, Cadillac, Camaro, Silverado, Tahoe, and Yukon. It facilitates controlled fluid transfer, preventing spills and ensuring accurate fluid levels during transmission maintenance and repair.

We have 11 in stock Inventory available from other suppliers, prices may be different

$17.16

Free shipping on orders over $250
Lower 48 states and DC. Excludes freight and oversize items.
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  • Model: 442819
  • Shipping Weight: 5.5lbs
  • UPC: 646541006714
  • Manufacturers Part #: MVA590
  • Manufactured by: Mityvac
  • Also Known As: MTY-MVA590, MITMVA590

This product was added to our catalog on Saturday 30 May, 2026.

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