Towing & Trailering
Boat Towing & Trailering
Boat Trailer Parts, Towing Gear & Launch Ramp Essentials
Shop boat trailer parts and towing accessories for safer road trips, easier launch days, and better protection between home, storage, service, and the ramp. Find bow rollers, bow stops, trailer winches, brake actuators, hubs, bearings, lights, wiring, tie-down straps, safety chains, couplers, bunks, guide-ons, jacks, and trailer maintenance parts.
Trailer fitment can depend on boat weight, hull shape, axle rating, coupler size, brake type, wheel size, roller shaft size, and local towing requirements.
Popular Towing & Trailering Searches
Find the Trailer Part or Towing Accessory You Need
Use these links to narrow the collection by the part or job. When a dedicated collection is not available, the link opens a Marisol Marine product search.
Support & Retrieval
Rollers, Bunks, Winches, Stops, and Guide-Ons
The trailer should support the hull evenly, hold the bow securely, and help the boat load straight at the ramp. Match rollers, bunks, stops, shafts, brackets, and guide-ons to the trailer frame, hull shape, and boat weight.
Road Gear
Brakes, Bearings, Lights, Couplers, and Tie-Downs
Road safety depends on the trailer being rated, visible, connected, and secured properly. Check hubs, bearings, brakes, lights, tire condition, coupler fit, safety chains, and tie-downs before towing.
Secure the Boat
Use a bow connection, stern tie-downs, and properly rated straps so the boat cannot shift during braking, turns, or rough road conditions.
Check the Running Gear
Inspect tires, hubs, bearings, brakes, lights, wiring, coupler latch, safety chains, and the jack before every longer tow.
Launch With Control
Guide-ons, bunks, rollers, winches, and bow stops help line up the boat and reduce hull, trailer, and ramp stress.
Fitment Help
Measure Before Ordering Trailer Parts
Trailer parts often look similar but fit differently. Check roller width, shaft diameter, coupler ball size, axle rating, hub bolt pattern, brake type, light plug style, bunk bracket dimensions, and trailer frame size before ordering.
Related Boating Categories
Helpful Gear Around the Ramp, Dock, and Trailer
Towing & Trailering FAQ
Choosing Boat Trailer Parts
What should I check before towing a boat?
Check tire condition and pressure, wheel bearings, hub temperature, brake operation, lights, wiring, coupler latch, hitch ball size, safety chains, winch strap, bow eye connection, and stern tie-downs.
How do I choose the right bow roller or bow stop?
Match the roller or stop to the shaft diameter, bracket width, trailer geometry, hull contact point, and boat weight. Measure the old part when possible.
Are disc and drum brake actuators interchangeable?
No. Trailer brake actuators must be matched to disc or drum brakes, trailer weight rating, coupler size, brake-line layout, and the braking system installed on the trailer.
When should trailer bearings be inspected?
Inspect bearings before long trips, after submersion-heavy use, if a hub runs hot, if grease looks contaminated, or if you notice noise, wobble, vibration, or uneven tire wear.
Shop Boat Towing & Trailering Equipment
Find trailer parts, towing gear, launch accessories, and maintenance items for safer road trips and smoother ramp days.
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Seachoice Marine Boat Trailer Wheel Bearing Kit, 1-1/16 In. Axle, Set of 2
Trailers vary greatly depending on their payload and construction, but one common factor is the importance of bearing maintenance. Subject to repea...
View full detailsSeachoice Frame Tie Plates (Pair Per Pack)
Frame tie plates are used in applications such as mounting boat trailer brackets and fastening spring sliders. Made of 1/4" plated steel with radiu...
View full detailsSeachoice Molded Spool Roller w/ Plastic Sleeve, Black Rubber, 4 In. Wide, 1/2 In. ID Hole
Seachoice Molded Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. They are idea as a repla...
View full detailsSeachoice 52279 2-Way Winch Replacement Handle
Features Quick-Attach—makes installing/removing the handle quick and easy For Seachoice winch models: 52251 & 52261
Seachoice Molded Spool Roller w/ Plastic Sleeve, Black, Boat Trailer, 4 In. X 5/8 In.
Seachoice Molded Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. They are idea as a repla...
View full detailsSeachoice Frame Tie Plates (Pair Per Pack)
Frame tie plates are used in applications such as mounting boat trailer brackets and fastening spring sliders. Made of 1/4" plated steel with radiu...
View full detailsSeachoice 52261 Trailer Winch, Strap with Hook, Two Speed, Max Load 3,000 Lbs.
This Seachoice Trailer Winch makes it easy to pull a boat or personal watercraft onto a trailer, and it keeps the craft securely under your control...
View full detailsSeachoice Dual Hitch Extender, Trailer Towing, 5,000-Lb. Capacity, Black Finish
The Seachoice Class III and IV Dual Hitch Extender gives you two 2-inch receivers so you can tow a trailer and use an accessory, such as a bike rac...
View full detailsSeachoice 55161 Heavy-Duty Axle U-Bolt Plate
For use on 2-3/8" round beam axles. For 1-3/4" springs. Use 1/2" Bolts. Use U-bolt model 57421.
Seachoice Trailer Winch, Strap with Hook, Max Load 1,200 Lbs.
Built for long lasting durability, this zinc plated steel trailer winch features a 4.1:1 gear ratio with 1,200 pound max load. Ergonomic roller gri...
View full detailsSeachoice 52278 Electric Jack Drop Foot
Provides excellent stability Powder coated
Seachoice Frame Tie Plates (Pair Per Pack)
Frame tie plates are used in applications such as mounting boat trailer brackets and fastening spring sliders. Made of 1/4" plated steel with radiu...
View full detailsSeachoice Trailer Wheel Bearing Kit
Model Cone/Bearing Cup/Race SealLM11949 LM11910 Single Lip, AE8439N
Med Duty Axle U-Bolt Plate(1/
Galvanized solid steel. For use on square beam and tube axles. 4-hole bolt pattern. Use spring 1-3/4".
Med Duty Axle U-Bolt Plate(3/
Galvanized solid steel. For use on square beam and tube axles. 4-hole bolt pattern. Use spring 1-3/4".
Seachoice Class II Hitch Extender, 14" x 2"
Prevents hitting trailer or propane tanks when making sharp turns Extends hitch (measurement is from center to center of hitch pin) Black powder c...
View full detailsSeachoice 56110 Heavy Duty Molded Keel Roller, Black, Boat Trailer, 12 in. X 5/8 in., Nylon Inserts
Seachoice Keel Rollers are designed to support the bottom of your boat and aid in launching and loading your boat. Heavy-duty steel sleeve and tape...
View full detailsSeachoice 50-52161 Trailer Winch, Max Load 1,000 Pounds, 25-Foot-Long 2-Inch-Wide Strap with Hook
This Seachoice Trailer Winch makes it easy to pull a boat or personal watercraft onto a trailer, and it keeps the craft securely under your control...
View full detailsSeachoice 52251 Trailer Winch, Strap with Hook, Two Speed, Max Load 2,000 Lbs.
This Seachoice Trailer Winch makes it easy to pull a boat or personal watercraft onto a trailer, and it keeps the craft securely under your control...
View full detailsSeachoice 52111 Electric Winch, 2000 lbs. Max Load
Four-stage planetary gear system for faster line speed Weather-resistant high-impact housing Rated for boats up to 18 ft. Includes: Connecting pla...
View full detailsSeachoice Class II Hitch Extender, 8" x 2"
Prevents hitting trailer or propane tanks when making sharp turns Extends hitch (measurement is from center to center of hitch pin) Black powder c...
View full detailsSeachoice Axle, U Bolt Plate Trailer, Galvanized, for Square Beam and Tube Axles
The Seachoice Medium-Duty Axle U-Bolt Plate features a 4-hole bolt pattern and is designed to be used with square beam and tube axles. Fits 1-3/4 i...
View full detailsSeachoice Trailer Shackle, 9/16 In., Zinc, Splined Bolt, 2 Pieces
Seachoice Shackle Bolts are used to mount a double-eye spring shackle inside a front or rear hanger. They measure 9/16-18 x 3 inches. Includes 2 sh...
View full detailsSeachoice Trailer Winch, Strap with Hook, Max Load 800 Lbs.
This Seachoice Trailer Winch makes it easy to pull a boat or personal watercraft onto a trailer, and it keeps the craft securely under your control...
View full detailsSeachoice Spring Shackles (2 Per Pack)
1/4" zinc plated steel.Punched to accept 9/16" splined shackle bolt Model 54911.
Seachoice Trailer Jack Stand Wheel Stop
Made of ABS plastic. Wheel stop prevents trailer from moving around or sinking in dirt or asphalt. For use with trailer jacks for boats and persona...
View full detailsSeachoice Heavy Duty Molded Keel Roller, Black, Boat Trailer, 10 in. X 5/8 in., Nylon Inserts
Seachoice Keel Rollers are designed to support the bottom of your boat and aid in launching and loading your boat. Heavy-duty steel sleeve and tape...
View full detailsSeachoice 55996 Bunk Carpet, 9 In. X 100 Ft., Black
This Seachoice Bunk Carpeting can be placed wherever needed to protect a boat hull from scratches and damage, especially during launching and loadi...
View full detailsSeachoice Replacement Wheel For Fold Up Boat Trailer Jack, 6 In.
If you routinely transport your boat to the local ramp, you want nothing to stand in the way. Trailer jack tires assist maneuverability when linkin...
View full detailsSeachoice Jack Foot for Round Table A-Frame Jacks, Fits 2-1/4 in. ID Tube, 8-1/2 in. Height, Zinc Plated
The Seachoice Jack Foot helps prevent sinking in softer ground by spreading out the load. It fits round tube A-frame jacks with a 2-1/4 inch inner ...
View full detailsLight-Duty Axle U-Bolt Plate
For use on 1-1/4" x 1-1/2" square beam axles and light-duty tube axles. For 1-3/4" wide springs. Use 1/2" bolts. Use U-bolt Model 57431.
Wheel Chock With Rope
Keeps your trailer in place so you can re-hitch safely Constructed of durable hard plastic with UV inhibitors Includes rope for convenient placeme...
View full detailsSeachoice Trailer Ball, 2 in., 3/4 X 2-5/16 in. Shank, 3,500 Lb. Capacity, Chrome Finish
The Seachoice SAE Class II Trailer Hitch Ball replaces a worn 2-inch hitch ball. It comes tow-ready, with a 3,500 pound towing capacity. This hitch...
View full detailsSeachoice Heavy Duty Molded Keel Roller, Black, Boat Trailer, 8 in. X 5/8 in., Nylon Inserts
Seachoice Keel Rollers are designed to support the bottom of your boat and aid in launching and loading your boat. Heavy-duty steel sleeve and tape...
View full detailsSeachoice Replacement Wheel Only for Trailer Jack
Black poly reinforced replacement wheel.
Seachoice Trailer Safety Chain, Galvanized, 1/4 In. X 42 In., 900 Lb. Max
The Seachoice Trailer Safety Chain provides a backup if your trailer is disengaged from the tow vehicle. This is welded link chain with safety hook...
View full detailsSeachoice SEA Class II Trailer Hitch Ball, 2 In. Ball, 3/4 X 1-1/2 In. Shank, Chrome Finish
The Seachoice SAE Class II Trailer Hitch Ball replaces a worn 2-inch hitch ball. It comes tow-ready, with a 3,500 pound towing capacity. This hitch...
View full detailsSeachoice Boat Trailer Winch Strap, Loop End, 20 Ft.
Cranking your boat out of the water is a breeze with this heavy duty trailer winch strap providing a 4,000 pound breaking strength and safe working...
View full detailsSeachoice 55997 Bunk Carpet 12 In. x100 Ft., Black
This Seachoice Bunk Carpeting can be placed wherever needed to protect a boat hull from scratches and damage, especially during launching and loadi...
View full detailsSeachoice Boat Trailer Coupler Ball 2 in. SAE Class III
This chrome-plated solid steel hitch ball is constructed to exacting specifications to ensure easier, safer towing. Complete with lock washer and n...
View full detailsSeachoice Trailer Ball, 2-5/16 in., 1 X 2 in. Shank, 6,000 Lb. Capacity, Chrome Finish
The Seachoice SAE Class IV Trailer Hitch Ball replaces a worn 2-5/16 inch hitch ball. It comes tow-ready, with a 6,000 pound towing capacity. This ...
View full detailsSeachoice Boat Trailer Winch Strap, Tail End, 20 Ft.
Cranking your boat out of the water is a breeze with this heavy duty trailer winch strap providing a 4,000 pound breaking strength and safe working...
View full detailsSeachoice Gunwale Trailer Tie Down Strap 2" Wide - Black
Black polyester strap with cadmium plated "J" hook.Quick release adjuster.
Seachoice Trailer Safety Chain
Zinc plated.Welded link chain with safety hooks.
Seachoice Winch Strap for PWC, Loop End, 2 in. X 12 Ft., 4,000-Lb. Break Strength
The Seachoice Winch Strap will help you get your personal water craft (PWC) in an out of the water with ease. This is a 2-inch wide high-strength d...
View full detailsSeachoice Triple Hook Ratchet Tie Down
Coated hooks Universal - for all PWC's and trailers, ATV's and motorcycles Strap (W x L): 1" x 8'
Seachoice Steel Winch Cable w/ Safety Hook, 3/16 In. X 25 Ft., 4,000-Lb. Tensile Strength
The Seachoice Steel Winch Cable With Safety Hook is designed for heavy-duty applications, with a tensile strength of 4,000 pounds. The 7 x 19 galva...
View full detailsSeachoice Gunwale Trailer Tie Down Strap 2" Wide - Black
Black polyester strap with cadmium plated "J" hook.Quick release adjuster.