BayStar HP4600 Seal Kit With Glands for H Cylinders

BayStar HP4600 Seal Kit with Glands for “H” Cylinders

OEM End Gland Seal Kit for BayStar Compact Front Mount Cylinders

The Dometic BayStar HP4600 Seal Kit is designed specifically for BayStar Compact Front Mount Cylinders with NPT-threaded “H” fittings, including models HC4645H, HC4647H, HC4648H, and HC4658H. This complete kit includes both port and starboard end glands, O-rings, shaft seals, wipers, and new socket screws—everything needed for a full gland rebuild.

This is the NPT-thread version of the HP4601 kit (which is for ORB-threaded -3 models).

Key Features & Benefits

• Complete Seal & Gland Replacement – Includes everything needed for a full end gland service
• Designed for H Cylinders – Use only with cylinders that have H part numbers
• Includes All New Hardware – Discard old screws as new socket head screws are included
• OEM-Grade Components – Meets or exceeds manufacturer standards
• Easy, Step-by-Step Installation – No special tools required beyond common hand tools

Compatible Cylinder Models

Kit Contents (HP4600)

Downloads & Resources

• BayStar HP4600 Installation Instructions
• BayStar Front Mount Cylinder Installation Instructions
• Dometic Warranty Information

Important Notices

• Do NOT reuse old socket screws. New stainless screws are included in the kit.
• Debris may be present after screw removal—clean inside and around cylinder barrel thoroughly.
• Tee fittings can be oriented to either side as needed. Use Teflon-based sealant and tighten according to instructions
• Does not include Internal, Center Seal.

Installation Overview (not complete)

1. Turn steering hard over toward the side being serviced to minimize fluid loss.
2. Remove steering lines and fittings from the gland. Clean fitting threads.
3. Loosen socket cap screws securing the gland using a 5/32” Allen driver.
4. Remove piston and support rod nuts.
5. Remove screws and slide gland off the piston rod.
6. Lubricate new gland and slide into position using a seal guide.
7. Hand-tighten new screws, reinstall hardware, then torque screws to 60 in-lbs.
8. Apply Teflon-based sealant to tee fittings and tighten as specified.
9. Repeat for opposite side.
10. Bleed system according to BayStar Installation Manual #22 (P/N 946410).

Related & Spare Parts

Why Choose the HP4600 Seal Kit?

• OEM-approved replacement for BayStar Compact “H” cylinders
• Includes both end glands, all sealing components, and hardware
• Ideal for servicing NPT-style front mount cylinders
• Ensures continued steering reliability and smooth performance

Questions?

• Tech Support: Tech Support Page
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• No Sales Tax on Purchases Outside of California
• Buy Now Pay Later with Affirm or PayPal Pay Later
• Formerly Teleflex, Seastar is now Dometic Marine
• Seatech Marine Products, Inc. is an authorized dealer, and service center for Dometic Marine

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