KPALAG Transmission Oil Fill Adapter for Infiniti 7-Speed — 304 Stainless Steel with O-Ring, Quick-Connect & Hose Barb

KPALAG transmission oil fill adapter is a 304 stainless steel replacement that lets you fill and top up 7-speed Infiniti and compatible Nissan transmissions cleanly, accurately, and without leaks.

If you service an Infiniti or Nissan 7-speed transmission, this adapter replaces factory fill fittings (7425, 304) and provides a corrosion-resistant, easy-to-use interface for pumps, funnels, or quick-connect hoses. Built from 304 stainless steel with included O-rings, the part is meant to withstand transmission fluid exposure, resist deformation, and give a reliable seal during routine maintenance or fluid changes.

Which cars and transmissions will this adapter fit?

This adapter is designed for a wide range of Infiniti 7-speed models and later Nissan applications. Verify fit against the listed model years and your transmission service port before purchase to ensure compatibility.

• Compatible with Infiniti: M35H (2012–2013), M37 (2011–2013), M56 (2011–2013)
• Also fits G25/G37, EX35/EX37, FX35/FX37/FX50 across stated years
• Works with Q50, Q70, QX50/QX56/QX60/QX70/QX80 (2014+ as noted) and Nissan 370Z (2009+)

How does the dual connection design make filling easier?

The adapter offers two attachment options so you can choose the fastest or most secure method for your job. A quick-connect coupling enables tool-free hookups for pump hoses, while the plain hose end accepts standard funnel or pump hoses for manual fills.

• Quick-connect fitting for instant, tool-free hose attachment
• Straight hose barb accepts manual pump or funnel hoses
• Facilitates both shop and DIY filling workflows

What features improve sealing and durability?

Construction and sealing were prioritized to avoid leaks and long-term wear. The adapter body is 304 stainless steel for corrosion resistance, and the supplied O-rings deliver a tight, compressive seal at the transmission port.

• 304 stainless steel resists rust, corrosion, and deformation
• Supplied rubber O-rings for reliable leak prevention
• Hex and knurled sections for secure wrench or hand tightening

Can I tighten this without tools and still get a secure seal?

Yes — the design balances quick hand operation with the option to apply tool torque when needed. A knurled section allows firm hand-tightening; a hex section accepts a wrench for tight spaces or when additional torque is required.

• Knurled grip for fast hand-tight installs and removals
• Hexagonal head for wrench tightening in confined areas
• Dual operating areas reduce chance of cross-threading or under-tightening

Who is this for: This KPALAG adapter is intended for DIY mechanics, independent technicians, and fleet maintenance teams who service Infiniti and compatible Nissan 7-speed transmissions. If you need a corrosion-resistant fill interface that supports both pump and quick-connect hoses and helps control fluid volume precisely, this part offers a durable, service-friendly solution. The package includes one adapter and two spare O-rings so you can install and reseal with confidence.