Small Team. Serious Expertise.
ABOUT BIG DOG MARINE
Founded in 2019 in Highland, Michigan, Big Dog Marine is a family-run business bringing you high-quality, yet affordable marine fuel systems— because boat builders deserve a supplier they can count on. We serve marine manufacturers and OEMs who can't afford compliance surprises or late parts. That's why we hold a 99.3% on-time delivery rate and a 99.8% product quality standard. And it's why a real person always answers when you call.
At the end of the day, it comes down to this: the parts you build with are what keep boat owners relaxed out on the water — and we take that seriously.
“WE don't just sell boat parts.
We sell peace of mind.”
— Sean Whelan, Founder & President
Big Dog Marine was founded by Sean Whelan, P.E. — a professional engineer, ABYC committee member, and the system design architect behind the carbon canister, pressure relief, and direct fill fuel systems that define today's EPA compliance standards. With 14 US patents and degrees from Michigan Tech, Purdue, and Michigan State, Sean brings decades of regulatory and engineering expertise to every product Big Dog Marine makes.
The Engineer Who Helped Write the Rules — Now Makes the Best Parts to Meet Them
FOUNDED BY AN INDUSTRY EXPERT
Trusted by Marine Manufacturers Across the Industry
“Big Dog Marine consistently delivers exceptional quality, service, and reliability. Their field and warranty performance are outstanding, and we’re proud to have partnered with them.”
- Jay Patton (President, American Boatbuilders Association)