Honda ATF DW-1 Automatic Transmission Fluid 4-Quart Kit with 18mm Drain Plug Washer — OEM formulation for consistent shift feel

Honda Genuine ATF DW-1 4-quart kit contains factory-approved automatic transmission fluid plus an 18 mm aluminum drain plug washer for proper service and fitment.

If your Honda's service manual specifies DW-1, this kit gives you the exact OEM fluid formulation designed for Honda automatic transmissions, bundled with a correct-size washer for a tidy drain plug seal. Using the specified fluid helps preserve the intended friction properties and hydraulic behavior engineered into your transmission, and the included washer reduces the risk of leaks after a pan or drain plug service.

Why choose Honda Genuine ATF DW-1 over aftermarket fluids?

DW-1 is a factory-formulated automatic transmission fluid developed to match Honda's frictional, viscosity, and anti-wear requirements. Aftermarket fluids can differ in additive chemistry and friction modifiers, which may change shift quality or compatibility with internal seals.

• OEM-approved formula specifically tuned for Honda automatic transmissions
• Consistent shift feel and hydraulic control across operating temperatures
• Maintains compatibility with seals and clutch materials used by Honda

How do I use this 4-quart kit and the included 18 mm washer?

This kit supplies four 1-quart bottles of ATF DW-1—enough for drain-and-fill jobs specified in many Honda models—and a single aluminum 18 mm drain plug washer to replace the old gasket when reinstalling the drain plug. Follow your vehicle’s service manual for fluid capacity, filter replacement, and torque specs for the drain plug.

• Pour fluid directly from the quart bottles to avoid contamination
• Replace the old drain plug washer with the included 18 mm aluminum washer
• Check and top to the correct level using the dipstick or fill plug method per model

Will this fluid work with my Honda model and preserve warranty requirements?

If your vehicle’s owner manual or dealer service information calls out DW-1, this is the correct factory fluid to use. Using Honda-approved ATF helps ensure compliance with manufacturer service recommendations and avoids potential issues related to incompatible fluid chemistry.

• Designed for Hondas originally filled with DW-1
• Supports intended clutch and band friction characteristics
• Maintains service conformity for warranty-sensitive maintenance

What benefits should I expect after replacing with genuine DW-1?

Using the right ATF can result in stable, predictable shift quality and reliable lubrication for transmission components. While fluids don’t restore worn parts, the OEM formula helps preserve the transmission’s designed behavior and can reduce the likelihood of fluid-related issues.

• Consistent shift feel under varied temperatures
• Optimized wear protection for gears and bearings
• Proper seal compatibility to minimize leaks

Who is this for: This kit is intended for Honda owners, independent shops, and DIY technicians who need the factory-specified ATF DW-1 for periodic service or fluid replacement. It’s ideal for vehicles that list DW-1 in their maintenance documentation and for anyone who prefers genuine Honda parts and fluids to match original equipment specifications.