Quealzara Transmission Breather Cap – Honda/Acura Compatible (Replaces 21396-P20-000)

Overview

Quealzara's Transmission Breather Cap is a direct OEM replacement crafted for a broad family of Honda and Acura vehicles. It replaces OEM part numbers 21396-P20-000 and 21396P20000, offering a streamlined upgrade during routine service or when replacing a worn cap. This part is designed to integrate with a wide array of models, from compact cars to SUVs, helping you maintain a clean, well-sealed transmission environment without guesswork.

In everyday driving, small maintenance components like a breather cap can influence how smoothly the transmission breathes under temperature swings and road conditions. This cap is built to sit securely in the existing breather system, providing a dependable fit that supports steady operation under a range of driving scenarios, from daily commutes to longer trips.

Key benefits

• Maintains pressure balance in the gearbox to stabilize internal pressure
• Direct OEM replacement for reliable compatibility with listed part numbers
• Durable construction engineered for longevity under thermal and road conditions
• Simple installation suitable for DIY tasks or professional service
• Lightweight design with precise threading for a secure seal

Compatibility overview

• Honda: Del Sol (1993–1997), Civic (1993–2021), Prelude (1997–2001), CR-V (1997–2021), Accord (1998–2021), Element (2003–2010), Odyssey (2007–2017), Crosstour (2010–2015), Insight (2010–2014, 2019–2021), CR-Z (2011–2016), Accord Hybrid (2014–2021), Fit (2015–2020), HR-V (2016–2021), Clarity Plug‑In Hybrid (2018–2021), CR-V Hybrid (2020–2021)
• Acura: MDX (2017–2020), RLX (2014–2020), RDX (2007–2018), ILX (2013–2015), TL (2007–2014), TSX (2004–2014), RL (2009–2012), RSX (2002–2006), CL (1997–1999), Integra (1995–2001)

Real-world use and application

Whether you’re performing a standard fluids service or replacing a worn cap during a diagnostic, this part is designed to slot into the existing system with minimal fuss. Its compatibility across multiple years and models means you can source a single replacement for several vehicles, reducing inventory clutter and simplifying sourcing for a mixed fleet.

What to expect during installation

As a straightforward replacement component, the cap is intended to integrate with standard service workflows. A snug seal and consistent fit contribute to a tidy under-hood appearance and a quiet, confident feel as the engine runs. The packaging includes one cap, ready to pair with the corresponding breather housing.

Bottom line

This Breather Cap from Quealzara is a practical, cost-conscious option for Honda and Acura owners who value reliable maintenance compatibility and straightforward installation. It offers the potential to support consistent gearbox breathing during operation, with a design that emphasizes durability and ease of use, without asserting guaranteed outcomes.