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.
Filters
Seachoice 57330 Sq U-Bolt-2 1/16X3 3/8-(Bulk)
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57430 Sq U-Bolt-3 1/16X3 13/16(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57220 Sq U-Bolt-3 1/16X2 13/16(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57230 Sq U-Bolt-3 1/16X4 5/16-(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 56640 Keel Pad, 12 In. X 3 In., TPR, Gold
The Seachoice Keel Pad mounts to trailer cross members to protect your boat's hull from banging against the trailer frame. TPR (Thermal Plasticized...
View full detailsSeachoice 57210 Sq U-Bolt-2 1/16X2 13/16(Bulk)
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57300 Rd U-Bolt-1 3/4X4 3/8-(Bulk)
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57201 Sq U-Bolt-1 9/16X3 9/16
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. One per card.
Seachoice Bow Roller w/ Bells, 4 In. TPR, Gold
Seachoice Bow Rollers with Bells replace the bow roller, end bells, shaft, and hardware on your boat trailer. They are designed to support the weig...
View full detailsSeachoice 57240 Sq U-Bolt-4 1/16X2 13/16(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice 57200 Sq U-Bolt-1 9/16X3 9/16(Bulk)
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice Bow Roller, 4 in., TPR, Gold
Seachoice Bow Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TPR ...
View full detailsSeachoice 57450 Sq U-Bolt-3 1/16X4 5/16-(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice Roller, End Cap, 3-1/2 in., TPR, Gold
The Seachoice Molded Roller End Cap mounts to a keel, spool, or bow roller for enhanced boat-to-roller contact area. Easy to install on same bracke...
View full detailsSeachoice 57470 Sq U-Bolt-3 1/16X6 5/16-(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice Bow Roller, 3 in., TPR, Gold
Seachoice Bow Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TPR ...
View full detailsSeachoice 57460 Sq U-Bolt-3 1/16X5 5/16-(Bulk
Solid galvanized steel u-bolts with nuts and lock washers. Covers most U-Bolt applications. Bulk Pack.
Seachoice Bunk Carpet, 12 in. X 12 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 Spring Shackles (2 Per Pack)
1/4" zinc plated steel.Punched to accept 9/16" splined shackle bolt Model 54911.
Seachoice Bow Roller w/ Bells, 3 In., TPR, Gold
Seachoice Bow Rollers with Bells replace the bow roller, end bells, shaft, and hardware on your boat trailer. They are designed to support the weig...
View full detailsSeachoice Spool Roller, 5 in. X 1/2 in., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice Ribbed Wobble Roller, 5 in., Gold
This ribbed roller will keep your boat’s hull protected when loading and unloading from the trailer. Heavy duty rubber construction delivers sturdy...
View full detailsSeachoice Bow Stop, 3 in., TPR, Gold
The Seachoice Molded "V" Bow Stop is employed as a bow stop for boats and personal watercraft. Made of TPR (Thermal Plasticized Rubber), which is r...
View full detailsSeachoice Spool Roller, 5 in. Length, 5/8 in. ID, Gold, 5 Year Warranty
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice 55983 Bunk Carpet, 8 In. X 12 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 Trailer Ball, 2 in., 1 X 2-1/8 in. Shank, 6,000 Lb. Capacity, Stainless Steel
The Seachoice SAE Class IV Trailer Hitch Ball replaces a worn 2 inch hitch ball. It comes tow-ready, with a 6,000 pound towing capacity. This hitch...
View full detailsSeachoice Trailer Ball 2-5/16 in., 1 X 2-1/8 in. Shank, 6,000 Lb. Capacity, Stainless Steel
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 Bunk Carpet, 12 in. X 12 Ft., Gray
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 Spare Wheel Bolts 1/2-20 (5 Per Pack)
Replacement parts for commonly used trailer wheels.
Seachoice Spring Shackles, 2-3/4 In. Center to Center, Accepts 9/16 In. Shackle Bolts, Pack of 2
Seachoice Spring Shackles connect double eye leaf spring to rear hanger or equalizer on boat trailer suspension systems. They are punched to accept...
View full detailsSeachoice Spool Roller, 4 in. X 1/2 in., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice Spool Roller, 4 in. X 5/8 in., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice Pal Nuts (10 Per Pack)
Zinc plated steel. Roller shaft comes complete with 2 pal nuts. Extra pal nuts sold in packs of 10.
Seachoice Trailer Wheel Lug Nuts, 1/2 in. X 20 Thread, Pack of 5
Designed and constructed to strict engineering quality standards, these spare lug nuts fit most common trailer wheel models. Seachoice is committed...
View full detailsSeachoice Side Mount Spare Tire Carrier for Boat Trailer
Seachoice Side-Mount Spare Tire Carriers are designed to mount your spare trailer wheel vertically to the side of the trailer tongue or frame rails...
View full detailsSeachoice Keel Roller, 8 in. X 5/8 in., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice 53161 Trailer Wheel Hub, 1.25 in. Axle, 5 Lug, Pregreased
The Seachoice 1 1/16-inch Trailer Wheel Hub will deliver smooth, reliable trailering and provide you with peace of mind as you enjoy trouble-free b...
View full detailsSeachoice Keel Roller, 10 In. X 5/8 In., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice SEA Class IV and V Trailer Hitch Ball, 2-5/16 in. Ball, 1-1/4 in. X 2-3/8 in. Shank, Chrome Finish
The Seachoice SAE Class IV and V Trailer Hitch Ball replaces a worn 2-5/16 inch hitch ball. It comes tow-ready, with a 10,000 pound towing capacity...
View full detailsSeachoice Lockable Spare Tire Carrier for Boat Trailer
Wherever the road takes you, enjoy the peace of mind knowing your valuables are secure. This zinc plated U-Bolt carrier locks a spare trailer tire ...
View full detailsSeachoice Keel Roller, 12 in. X 5/8 in., TPR, Gold
Seachoice Spool Rollers are designed to support the weight of your boat and aid in launching and loading your boat. Our boat rollers are made of TP...
View full detailsSeachoice 53121 Painted Trailer Wheel Hub
One piece cast hubs complete with pregreased bearings, seals, dust caps, cotter pin and lug nuts. 1/2"-20 Studs. Inner Bearing Code: L44643, Outer ...
View full detailsSeachoice SEA Class IV Trailer Hitch Ball, 2-5/16 in. Ball, 1-1/4 in. X 2-3/4 in. Shank, 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 10,000 pound towing capacity. This...
View full detailsSeachoice Roller Shaft w/ 2 Pal Nuts, Fits 12-In. Roller
Seachoice Roller Shafts With Pal Nuts are designed to accommodate a roller on your boat trailer. Our roller shafts are constructed of sturdy, zinc-...
View full detailsSeachoice Molded Roller End Cap, Black, Boat Trailer, 3-1/2 In. X 5/8 In.
The Seachoice Molded Roller End Cap mounts to a keel, spool, or bow roller for enhanced boat-to-roller contact area. Easy to install on same bracke...
View full detailsSeachoice Trailer Roller Shaft w/ 2 Pal Nuts, Fits 8-In. Roller
Seachoice Roller Shafts With Pal Nuts are designed to accommodate a roller on your boat trailer. Our roller shafts are constructed of sturdy, zinc-...
View full detailsSeachoice Pal Nuts (10 Per Pack)
Zinc plated steel. Roller shaft comes complete with 2 pal nuts. Extra pal nuts sold in packs of 10.
Seachoice 53141 Trailer Wheel Hub, 1 in. Axle, 5 Lug, Pregreased
Seachoice 1 Inch Trailer Wheel Painted Hub Kits include a one-piece, marine-grade cast hub. This kit includes bearings, seals, dust caps, cotter pi...
View full details