Honda J-Series Water Pipe O-Ring (91314-PH7-003) — NOK

This is the O-ring that seals the coolant water pipe — the metal crossover pipe that routes coolant across the engine — on Honda and Acura J-Series V6 engines. Over years of heat cycling the original seal hardens and cracks, which shows up as a coolant leak at the water pipe. It's an inexpensive part that's smart to replace any time you have the front of the engine apart for a timing belt service, water pump, or coolant-leak repair.

Manufactured by NOK, one of Honda's original-equipment seal suppliers, so it's a true OEM-replacement — not a generic aftermarket ring.

Specifications

• Honda / Acura part number: 91314-PH7-003
• Size: 31.2 mm inner diameter × 4.1 mm cross-section
• Sold individually (one O-ring)

Fitment

Fits the water pipe O-ring location on virtually all Honda & Acura J-Series V6 engines from roughly 1998–2026, covering the J30, J32, J35, and J37 engine families — a huge range of vehicles, including:

• Honda: Accord V6, Odyssey, Pilot, Ridgeline, Passport
• Acura: CL, TL, TL Type-S, TSX V6, RL, MDX, ZDX, RLX, TLX

Not sure which J-Series engine you have? See our Find Your J-Series Engine Code guide. The surest way to confirm fit is to match Honda part number 91314-PH7-003 to your vehicle.