Inboard Hydraulic Steering Kit with BA135-7ATM | Dometic Seastar HK4420-3
Inboard Hydraulic Steering Kit with BA135-7ATM | Dometic Seastar HK4420-3
Dometic
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Inboard Hydraulic Steering Kit with BA135-7ATM | Dometic Seastar HK4420-3
SeaStar Inboard Hydraulic Steering Kit with BA135-7ATM | HK4420-3
Complete SeaStar hydraulic steering system for single or dual rudder inboard steering applications includes helm pump, steering cylinder HC5313-3, 60 ft. of tubing, & 2 quarts of hydraulic steering fluid.
- SeaStar inboard steering kit with BA135-7ATM cylinder
- Designed for single or dual rudder inboard steering applications
- For single engine planing hulls up to 32 ft. in length and dual engine planing hulls to 38 ft. in length
- Kit includes HH5271-3 helm, HC5313-3 cylinder, 60 ft. of 3/8 in. nylon tubing and 2 quarts of HA5430 hydraulic steering fluid
- Smooth low friction system makes steering effortless compared to mechanical steering systems
- Anodized aluminum steering cylinder with 2 axis articulation
- 5.0 turns from lock-to-lock
- 1.7 front mount helm has a small 4 7/16 in. footprint
- 3 in. helm cut-out hole size
- Standard 3/4 in. tapered steering shaft
- Accepts up to 28 in. diameter steering wheels
- Second station can be added with the purchase of additional components
- Meets A.B.Y.C. and N.M.M.A. standards and certifications

! Compatibility references are provided for informational purposes only and do not constitute a fitment guarantee. Part numbers, application listings, and "replaces" cross-references are based on manufacturer data and are intended as a starting point for identification — not a guarantee of fit for your specific engine, hull, or installation.
Buyer is solely responsible for verifying compatibility with their engine model, serial number, model year, and trim configuration before purchase. If you are unsure whether this part fits your application, contact MacombMarineParts.com before you buy — we're available via text, email, or online chat to help verify compatibility for your specific application.
MacombMarineParts.com is not liable for parts ordered based on assumed fitment. Returns due to buyer-selected incorrect fitment are subject to our standard return and restocking fee policies.