• 19251-ZW1-900 Water Tube | Genuine Used Part
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19251-ZW1-900 Water Tube | Genuine Used Part

19251-ZW1-900 Water Tube | Genuine Used Part

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🔧 Product Description

Genuine Honda Long Water Tube - Part Number: 19251-ZW1-900

A genuine Honda long cooling-water tube for selected BF75, BF90, BF115 and BF130 four-stroke outboards.

The approximately 14-inch tube carries pressurised cooling water upward from the lower-unit water pump to the powerhead and cooling passages. Correct seating at both ends is essential for maintaining engine cooling-water pressure.

⚙️ Key Features

  • Genuine Honda OEM long water tube
  • Correct Honda part number 19251-ZW1-900
  • Approximately 14 inches in length
  • Transfers water from the lower-unit pump to the powerhead
  • Used on selected 75HP to 130HP Honda four-stroke outboards

🚤 Compatibility

Commonly used on

  • Honda ZW1 and ZW5 extension-case cooling-water systems
  • Long-shaft and extra-long-shaft midsection assemblies

Typically suits

  • Engine models:
  • Honda BF75A
  • Honda BF75AT
  • Honda BF90A
  • Honda BF90AT
  • Honda BF115A
  • Honda BF115A1
  • Honda BF115A2
  • Honda BF115A3
  • Honda BF115A4
  • Honda BF115A5
  • Honda BF115A6
  • Honda BF115AK0
  • Honda BF130A
  • Honda BF130A1
  • Honda BF130A2
  • Honda BF130A3
  • Honda BF130A4
  • HP Range: 75HP - 130HP
  • Engine Type: Honda inline four-cylinder four-stroke outboard
  • Year Range: Approximately 1997 - 2007

🔌 Function

The tube carries cooling water from the impeller pump in the gearcase to the engine block and cylinder-head cooling passages.

⚠️ Common Signs of Failure

  • Engine overheats despite a serviceable impeller
  • Weak cooling-water flow
  • Tube corroded, cracked or perforated
  • Tube end damaged and unable to seal
  • Tube misaligned during lower-unit installation

🔄 Supersession & Cross Reference

OEM Supersession Chain

  • 19251-ZW1-900 current documented Honda long water-tube reference

OEM / Related Numbers

  • 19251-ZW1-900
  • 19251ZW1900
  • 19241-ZW1-B02 related water-pump housing
  • 19242-ZW1-B00 related water-pump gasket
  • Related upper and lower water-tube seals
  • Related extension-case water-pipe components

Aftermarket / Verified Equivalents

  • No aftermarket equivalent

📦 Condition

  • Genuine used part
  • Removed from running engine where applicable
  • In good working condition unless otherwise stated

Shipping & Delivery

Flat-rate shipping Australia-wide — $14.99 per order, no matter how many parts you add. Orders dispatch from our Kadina, South Australia store. Need it urgently or want to collect in person? Call us on 0412 532 984 before ordering.

Returns & Warranty

14-day change-of-mind returns — if it's not right or you ordered the wrong part, send it back within 14 days in the condition you received it for a refund or exchange. Full details in our Refunds & Returns policy.

Not sure this fits?

Ask us before you buy — we check part numbers and fitment every day. Call 0412 532 984 (Mon–Fri 8.30am–4.30pm) or message us through the contact page with your engine or vehicle details.

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