Honda B/F/H/J/L/R Series Water Connecting Pipe Gasket 91314-PH7-003

Genuine Honda Water Pipe O-Ring Gasket (91314-PH7-003) - B, F, H, J, L & R Series

This is the O-ring that seals your water connecting pipe, and it's one of those parts that costs almost nothing and causes real headaches when it's ignored. The connecting pipe is a major coolant passage running through your engine, with a flared end on each side where the gasket seats. When that rubber hardens with age, it stops sealing and you get a coolant leak that's annoying to trace because it's tucked away where you can't easily see it. This is the genuine Honda replacement.

Make Sure You've Got The Right One

Important, because Honda uses a similar-looking O-ring in a different size elsewhere. This is 91314-PH7-003, covering B, F, H, J, L, and R series engines.

If you're working on a D-series, you need a different part. Same style of gasket, completely different dimensions, and they aren't interchangeable. Check your engine before ordering rather than going by appearance, since these look nearly identical side by side.

One specific correction worth noting: the 2007-2013 Honda Fit uses this part number, not the D-series gasket. If you've seen it listed elsewhere under the D-series O-ring, that's wrong.

You Need Two

Read this before you check out, since these are sold individually. The water connecting pipe has a gasket at each end, so a complete job takes two. Order one and you'll be halfway through with a leak still on the other side.

And there's no good reason to reuse the second one. Both gaskets have lived the same life under the same heat for the same number of years, so if one has hardened up, the other is right behind it. They're cheap, you're already in there, buy the pair.

Do It While You're In There

Getting to the water connecting pipe usually means having other things apart, so this is a part you replace opportunistically. If you're doing a water pump, a timing belt, a head gasket, a coolant system refresh, or building an engine on a stand, put fresh gaskets on the pipe while you have access. Rubber this old is a known wear item, and coming back for it later means tearing things apart a second time over a couple of dollars in parts.

Use The Genuine Gasket

This seals a coolant passage, so it's not a spot to gamble. The gasket has to seat correctly in that flared end and stay pliable through years of heat cycling, and a generic O-ring that's close on dimensions but wrong on material will harden and leak sooner. This is the exact part Honda spec'd, so it fits the flare properly and seals the way it's supposed to. On something this inexpensive, buying the correct piece is an easy call.

Fitment

This O-ring covers B, F, H, J, L, and R series engines across a wide range of Honda and Acura:

• 1997-2003 Acura CL
• 2013-2015 Acura ILX (automatic)
• 1990-2001 Acura Integra GS / GS-R / LS / RS / Type R
• 2023-2026 Acura Integra Base / A-Spec
• 1986-1990 Acura Legend
• 2001-2026 Acura MDX
• 2013-2018 Acura RDX
• 2005-2012 Acura RL
• 2014-2020 Acura RLX
• 1995-2014 Acura TL
• 2015-2025 Acura TLX
• 2010-2014 Acura TSX V6
• 1992-1994 Acura Vigor
• 2010-2013 Acura ZDX
• 1990-2002 Honda Accord (F-series / V6)
• 2003-2017 Honda Accord V6
• 2018-2025 Honda Accord 1.5T
• 1999-2000 Honda Civic Si
• 2006-2015 Honda Civic DX / EX / LX
• 2016-2026 Honda Civic 1.5T / Si
• 1997-2001 Honda CR-V
• 2017-2026 Honda CR-V
• 2011-2016 Honda CR-Z
• 2010-2015 Honda Crosstour
• 1994-1997 Honda Del Sol VTEC
• 2007-2013 Honda Fit
• 2016-2022 Honda HR-V
• 2010-2014 Honda Insight
• 1995-1998 Honda Odyssey
• 1999-2026 Honda Odyssey
• 2019-2025 Honda Passport
• 2003-2025 Honda Pilot
• 1988-1996 Honda Prelude S / Si
• 2026+ Honda Prelude
• 2006-2026 Honda Ridgeline

With coverage this broad, it's worth confirming the part against your engine's parts diagram before ordering.

Who Should Grab These

This is for anyone chasing a coolant leak around the water pipe, refreshing an older engine's cooling system, or building an engine and putting it back together with fresh seals throughout. It's a cheap part doing an important job. Confirm your engine, grab two, and stop worrying about that pipe.

Fits: Honda and Acura B, F, H, J, L, and R series engines, see the application list above. Part number: 91314-PH7-003. Type: genuine Honda water connecting pipe O-ring gasket. Quantity: sold individually, two required per water connecting pipe. Note: D-series engines use a different gasket.