19253-ZV5-000 Water Pump Water Tube Seal for Honda BF35A BF40A BF40D BF45A BF50A BF50D | JLM Marine

Water Pump Water Tube Seal – Fits Honda 35-50 HP Outboard Engines

This water pump water tube seal is engineered to fit Honda outboard engines ranging from 35 HP to 50 HP across multiple model series. Designed as a direct replacement for OEM part number 19253-ZV5-000, this seal ensures a reliable water-tight connection in your outboard's cooling system, preventing leaks and maintaining optimal engine temperature.

Compatible with Honda BF35A, BF40A, BF40D, BF45A, BF50A, and BF50D models across all production years, this seal is a critical component for routine water pump maintenance and rebuild operations.

• Direct replacement for Honda OEM part number 19253-ZV5-000
• Essential component for water pump service and cooling system integrity
• Fits multiple Honda 35-50 HP outboard models across all years

Part Number Cross-Reference

Use this table to confirm equivalent part numbers across OEM and aftermarket brands.

Compatible Engine Models

Confirm your engine model/year in the table below.

Technical Specifications

Package Contents

This package includes the following component:

• 1 × Water Pump Water Tube Seal (19253-ZV5-000)

Installation Guide

1. Disconnect the fuel line and remove the engine cowling to access the lower unit. Drain the lower unit gear oil completely.
2. Disconnect the shift linkage and remove the lower unit mounting bolts, then carefully separate the lower unit from the midsection.
3. Remove the water pump housing cover and extract the old impeller and plate. Note the impeller blade orientation for reassembly.
4. Carefully remove the old water tube seal from its groove using a pick or small screwdriver, taking care not to damage the sealing surface.
5. Clean the water tube seal groove thoroughly, removing all old seal material, corrosion, and debris.
6. Lubricate the new water tube seal with water-resistant marine grease and press it firmly into the groove, ensuring it seats evenly around the entire circumference.
7. Install the new impeller with blades oriented correctly, followed by the impeller plate and housing cover. Torque fasteners to manufacturer specifications.
8. Apply a thin bead of gasket sealant to the mating surfaces if required by your model, then carefully align and reattach the lower unit to the midsection.
9. Reinstall and torque all lower unit mounting bolts in a crisscross pattern to ensure even pressure and proper seal.
10. Reconnect the shift linkage and verify smooth operation through all gear positions. Refill the lower unit with fresh gear oil to the proper level.
11. Reinstall the engine cowling and reconnect the fuel line. Start the engine and verify strong water flow from the tell-tale indicator.
12. Check for leaks around the water pump area and lower unit seals during the first few minutes of operation.

Troubleshooting & FAQ

Q: How do I know if my water tube seal needs replacing?
A: Common signs include weak or no water flow from the tell-tale indicator, engine overheating, visible water leaks near the water pump area, or loss of cooling system pressure. The seal should be inspected and typically replaced during routine water pump impeller service.

Q: How often should I replace the water tube seal?
A: Replace the water tube seal whenever you service the water pump impeller, typically every 2-3 years or 200-300 hours of operation. Always install a new seal when rebuilding the water pump to prevent leaks and ensure proper cooling system function.

Q: Can I reuse the old seal if it looks okay?
A: No, water tube seals are single-use components. Even if the old seal appears intact, it has been compressed and may not provide a reliable seal upon reinstallation. Always use a new seal during water pump service to prevent costly cooling system failures.

Q: Will this seal fit my specific Honda model year?
A: This seal fits all production years of the Honda BF35A, BF40A, BF40D, BF45A, BF50A, and BF50D models. Verify your engine model designation matches one listed in the compatibility table above.

Q: What's the difference between OEM and aftermarket seals?
A: This listing is an aftermarket replacement part (not an OEM component). We build to OEM specifications using comparable-grade materials. Production is done in an ISO9002-certified facility, and each batch is inspected for consistent performance.

Q: How fast do you ship and how much does it cost?
A: We offer fast global shipping—typically 5–15 days worldwide—and standard shipping is free. Expedited options are available at checkout depending on your location.

Q: What is your warranty and return policy?
A: This product includes a 1-year warranty against manufacturing defects under normal use. If something goes wrong, contact our support team with your order details. Returns are accepted within our standard return window (unused & in original condition); please see our policy page or reach out for instructions.

Important Notes

• Verify that the product images and specifications match your original part. If discrepancies exist—even if your model is listed—do not proceed with the purchase.
• This product is an aftermarket replacement part and is not an OEM component.
• Professional installation is recommended to ensure safety and optimal performance.

Why Choose JLM MARINE?

• Quality Assured: As a trusted manufacturer for over 20 years, we supply top marine brands globally.
• Fast Global Shipping: Free delivery worldwide in 5–15 days.
• Direct from Manufacturer: Competitive pricing without compromising quality.