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Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang 1970,1970 cougar,1970 mustang,1971,1971 cougar,1971 mustang,1972,1972 cougar,1972 mustang,1973,1973 cougar,1973 mustang,351c,cougar,d0w,d0z,d1w,d1z,d2w,d2z,d3w,d3z,ford,ford mustang,mercury,mercury cougar,mustang,new,plate,repro,reproduction,restrictor,water,bypass,by,pass,conversion,over,heating,cooling,solution,cleveland,overheating overheat,over,heat,fix,cleveland,hat,351c,thermostat,conversion,351,cj,cobra,jet,mach I,mach,1,i,torino,cyclone,aluminum,restricter,bipass,cooling,package,fix,reroute,detomosa,pantera,trick,53234

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Item #: 53234

4.80 stars, based on 33 reviews
New water restrictor plate for the Mercury or Ford equipped with the 351 Cleveland engine. It has been an accepted fact for decades now that the 351C bypass system was not the greatest idea Ford ever came up with. The unique 351C thermostat "hat"...
Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2014
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pantera

works good.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
France
Customer since 2016
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perfect item

Installed on my De Tomaso Longchamp, 351C. Easy to install. Cooling works properly know, with correct heat regulation.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since
Material:
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Restrictor plate

My 351C 4V always ran hot for years. Read about these, gave it a try. Now, my Cougar runs about 25 degrees cooler. Problem solver.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since
Material:
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Restrictor Plate

I installed the restrictor plate in my 351c about two weeks ago. Temps here have been in the 95 to 100 range. My vehicle is staying between 180 and 188 degrees. Before using the restrictor plate I was getting engine temps as high as 215. I am using a 160 degree thermostat. I had previously tried the old school "penny method" and it helped but not nearly as well as the WCCC aluminum restrictor.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2013
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restrictor water plate

good looking piece have not in stalled yet shipped in a speedy fashion

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Louisville CO
Customer since 2013
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  • 30 minute install.
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So far so go!

I put this in my 1973 Cougar 2 weeks ago. I have driven it about 100 miles. No more running hot at idle! I can't believe it took me years to find this product. I would highly recommend this if your 351 C is running hot. I would suggest WCC to have this populate when searching for cooling items for 351 C.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2018
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Thanks Don

Your recommendation to use the water restrictor plate to solve my overheating problem was spot on.

Ironically the thermostat I took out, which I thought was original turned out to be a Windsor thermostat.



Thanks again for the solution to my problem,

Alan

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2014
Material:
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Pros:
  • Customer%20service.
Cons:
  • None

Thanks Don and team!

While driving my 71 cougar back to Colorado, I stopped by WCCC and Don noticed she was running a bit warm. He suggested the bypass update and thermostat change. He was so worried about us making it back he had his team replace it for us! Well Don it worked like a champ. Thanks for the help.



ike

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2018
Material:
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Water restriction plate

The plate seems to work well

A few instructions would have been nice. It is really the"right" fix for the problem. I am glad your company came up with the solution.

Water Restrictor Plate - Modified - 351C - New ~ 1970 - 1973 Mercury Cougar / 1970 - 1973 Ford Mustang
Customer since 2018
Material:
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water restrictor plate

the part arrived before I new it. Sorry but I haven't installed it yet, as it is my personal project. Will check back later. Thanks Respectfully Lloyd