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Nothing will kill the fun faster than a boat that won't start due to a mechanical malfunction. Avoid the headache and save yourself time and money by doing the proper preventative upkeep and repairs on your watercraft. At Discount Inboard Marine, we carry a wide variety of boat maintenance products to help keep your watercraft running at its very best. Shop for boat repair supplies, boat maintenance products, spark plugs, oils and fluids, flush kits and much more. Make Discount Inboard Marine your one-stop-shop for boat maintenance supplies and repair products.