Hapco Products Co.
Automotive products designed to improve or maintain
performance. The founder, John Frederick, has a background in mechanical engineering.
Since 1960, Hapco Products has been producing high quality automotive products for consumers in the Motor City. He comes from a long line of German engineers and his father, Howard Frederick, was a civil engineer for the City of Detroit. He helped lay the infrastructure for buildings along Grand Boulevard when Detroit was just a small town. At a young age, John Frederick worked at family-owned ga
07/27/2020
GOT AN OIL LEAK?
Hapco Pro-Seal is GUARANTEED to stop leaks in: Engines, Transmissions, Power Steering Units, Differentials, Rack and Pinion, and Hydraulic Systems.
Visit Hapco Products on Amazon: https://www.amazon.com/dp/B01M1A0O61?ref=myi_title_dp
Hapco Products - Pro-Seal – 8 oz. Hapco Products - Pro-Seal – 8 oz.
05/28/2019
Hapco Products - Pro-Seal - 8 oz. Hapco Pro-Seal is the most concentrated leak sealant that we offer! It is easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition to help prevent future leaks. Does not contain part...
12/11/2018
SlipCoat Anti-Wear Oil Additive is a dripless formula that clings to delicate bearing surfaces, cylinder walls and camshafts with a super slippery, super tough film to positively protect them from metal to metal scoring and premature wear. Reduces operating temperature, increases oil pressure and provides constant lubrication. This combination not only extends engine life, but can increase gas mileage up to 20%. SlipCoat is impervious to moisture, foaming, heat and pressure, which guarantees long lasting protection in all extremes of operation. Does not contain graphite, teflon, PTFE resin or any other potentially clogging components. Compatible with all conventional and synthetic oils.
Visit Hapco Products on Amazon!
https://www.amazon.com/dp/B01LX1PHDT
11/26/2018
GOT AN OIL LEAK?
Pro-Seal is the most concentrated leak sealant that we offer! It's easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition. Does not contain particles or solvents and will not harm any seals.
Every bottle is guaranteed to work or your money back!
Visit Hapco Products on eBay!
https://www.ebay.com/itm/222473417731
07/25/2018
GOT AN OIL LEAK?
Pro-Seal is the most concentrated leak sealant that we offer! It's easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition. Does not contain particles or solvents and will not harm any seals.
Every bottle is guaranteed to work or your money back!
Visit Hapco Products on Amazon! https://www.amazon.com/dp/B01M1A0O61
Hapco Products - Pro-Seal - 8 oz. Hapco Pro-Seal is the most concentrated leak sealant that we offer! It is easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition to help prevent future leaks. Does not contain part...
07/17/2018
06/29/2018
Leaking Cooling System?
Hapco Cooling System Sealer is guaranteed to stop all head gasket, heater core, freeze plug, block and radiator leaks fast! It is easy to use and will not harm or clog any cooling system. Our original formula does not contain metal flakes and is compatible with all types of antifreeze. Specially formulated to permanently seal and protect against future leaks. For Best Results: Add one 16 oz. bottle of Cooling System Sealer into radiator. Start the engine and let it run 15 minutes or until the leak stops.
Visit Hapco Products on Amazon!
https://www.amazon.com/dp/B01N6XUF7L
Hapco Products - Cooling System Sealer (pack of 1) Hapco Cooling System Sealer is guaranteed to stop all head gasket, heater core, freeze plug, block and radiator leaks fast! It is easy to use and will not harm or clog any cooling system. Our original formula does not contain metal flakes and is compatible with all types of antifreeze. Specially ...
06/26/2018
Power steering or transmission leaking fluid??
Hapco Power Steering & Trans Sealer contains lubricating and sealing agents to quickly stop leaks in transmissions and power steering units. This formula helps prevent the major cause of leaks by restoring old, hard rubber seals. Its viscosity insures maximum lubrication and helps prevent the formation of harmful deposits while effectively sealing any leaks.
Visit Hapco Products on Amazon!
https://www.amazon.com/Hapco-Products-Power-Steering-Sealer/dp/B07DVQTVJV/ref=sr_1_20?ie=UTF8&qid=1530041123&sr=8-20&keywords=hapco%2Bproducts&th=1
Hapco Products - Power Steering & Trans Sealer (Pack of 2) Hapco Power Steering & Trans Sealer contains lubricating and sealing agents to quickly stop leaks in transmissions and power steering units. This formula helps prevent the major cause of leaks by restoring old, hard rubber seals. Its viscosity insures maximum lubrication and helps prevent the for...
06/22/2018
GOT AN OIL LEAK? Permanently repair leaking rubber seals with Hapco Pro-Seal! - Made in Michigan Since 1960
Pro-Seal is the most concentrated leak sealant that we offer! It is easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition. Does not contain particles or solvents and will not harm any seals. Every bottle is guaranteed to work or your money back!
Visit Hapco Products on Amazon! https://www.amazon.com/dp/B01M1A0O61
Hapco Products - Pro-Seal - 8 oz. Hapco Pro-Seal is the most concentrated leak sealant that we offer! It is easy to use and guarantees a fast, permanent seal in any fluid system. This formula brings all rubber seals that suffer from age and wear, back to their original condition to help prevent future leaks. Does not contain part...
06/19/2018
LEAKING OIL?
Hapco Tri-Seal guarantees a permanent seal in transmissions, main bearings and power steering units. This formula is designed to treat current leaks and prevent them in the future. It helps prevent wear and shrinkage in nitrile and neoprene rubber seals by restoring them to their original condition. For Best Results: Add entire bottle of Tri-Seal directly into fluid reservoir where leak is occurring. Drive vehicle as normal to allow circulation of fluids.
Visit Hapco Products on eBay!
https://www.ebay.com/itm/ULTIMATE-OIL-STOP-LEAK-ENGINES-TRANSMISSIONS-AND-POWER-STEERING-Tri-Seal/222699041653?hash=item33d9e5b375:g:gqwAAOSw30JbDxCk:sc:USPSPriority!48089!US!-1
10/18/2016
GOT AN OIL LEAK? Main Sta is formulated to stop oil leaks fast. Visit http://hapcoproducts.com/product/main-sta/ … to learn more!
Main Sta - 16 oz. - Hapco Site 16 oz. Stops oil leaks in main bearing seals, timing gear covers, etc. Use in all engines for improved performance Effectively prevents wear and shrinkage Penetrates and lubricates vital areas Helps make new engines leakproof MAIN STA is a pure blend of natural and synthetic lubricants formulate...
Happy to announce we are now listed on Amazon. Check us out!
https://www.amazon.com/s?marketplaceID=ATVPDKIKX0DER&me=A2ZL3A2OMGL1S6&merchant=A2ZL3A2OMGL1S6&redirect=true
Amazon Search Online shopping from a great selection at Hapco Products Co. Store.
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Telephone
Website
Address
48089
Opening Hours
| Monday | 9am - 5pm |
| Tuesday | 9am - 5pm |
| Wednesday | 9am - 5pm |
| Thursday | 9am - 5pm |
| Friday | 9am - 5pm |
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