Genuine Honda Timing Cover / Oil Pump O-Ring 24.4X2.4 - 91326-PF4-004

Genuine Honda Timing Cover & Oil Pump O-Ring 24.4X2.4 - 91326-PF4-004

The Genuine Honda OEM O-Ring with dimensions 24.4X2.4 mm is a critical sealing component for the lubrication system and timing assembly in many Honda models. Manufactured from high-grade rubber resistant to extreme temperatures and long-term exposure to engine oil, it ensures a perfect seal where aftermarket alternatives often fail.

While this seal is used in various automotive subassemblies, it is most commonly sought after as an oil pump seal for L-series engines (Jazz, Civic 1.4) and as a timing cover O-ring for modern 1.0 VTEC Turbo engines. Precise fitment is essential for maintaining nominal oil pressure and preventing leaks in sensitive engine areas.

Applications

This product is highly versatile. Key engine applications (oil pump / timing cover) include:

• Honda Civic:
  • 2017-2021 (5D) & 2020 (4D): 1.0 Turbo engines – Timing cover O-ring
  • 2006-2016 (5D): 1.4 i-DSI / i-VTEC engines – Oil pump O-ring
  • 2009-2011 (3D): 1.4 engines – Oil pump O-ring
  • 2004-2011 (Hybrid): LDA1 / LDA2 engines – Oil pump O-ring
• Honda Jazz / Fit:
  • 2002-2020 (GD, GG, GK): All versions – Oil pump O-ring
  • 2021-2026 (E:HEV): Latest generation – Oil pump O-ring
• Honda HR-V:
  • 2016-2018: 1.5 NA engine – Oil pump O-ring
  • 2022-2026 (E:HEV): Oil pump O-ring
• Other Models (Oil / Drivetrain System):
  • Honda CR-Z (2011-2013), Insight (2010-2014), Honda E (2020-2023)
  • Acura MDX, RDX, TLX (2015-2024): Rear differential oil pump motor O-ring
  • Legacy application as an accumulator piston O-ring in AT transmissions (Civic, Accord, Legend, NSX, CR-V)

OEM Reference Numbers

This product is a direct replacement or successor to the following reference numbers:

• 91326-PF4-004 (Primary number)
• 91326-PWA-W01

When to Replace / Symptoms of Wear

This O-ring should be replaced whenever the oil pump or timing cover is disassembled. Over time, the rubber hardens and loses elasticity, which can lead to:

• Oil seepage or leaks around the timing assembly,
• Loss of pressure in the lubrication system (critical for turbocharger health),
• Fluid leaks from the differential pump motor in SH-AWD systems.

Installation & Service Tips

• Before installation, verify that the O-ring seat is perfectly clean and free of old deposits or debris.
• Important: Lightly coat the new O-ring with fresh oil before seating to prevent twisting or tearing during reassembly.
• For 1.0 VTEC Turbo engines, it is highly recommended to replace this seal during a "wet" timing belt service.

FAQ – Frequently Asked Questions about 91326-PF4-004

Does this O-ring fit every Honda Civic 1.0 Turbo?
Yes, it is the dedicated O-ring for sealing the timing cover in 1.0 VTEC Turbo units found in the 10th generation Civic.

Can I use a generic O-ring with similar dimensions?
We do not recommend this. The Honda OEM O-ring is made from a specific compound resistant to modern low-viscosity oils (like 0W20) and their additives, ensuring long-term reliability.