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

Item #: 53234

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Price: $27.86
    Cost: 2229
    Earns: 112
    Bonus: 0

    Availability

    Out of Stock, On Order - Often less than 2 Weeks, Unless Supplier is Backordered
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    Description

    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" never seals well, causing a certain portion of coolant to just circulate through the block and never make it to the radiator. Years ago, Pantera enthusiasts (all Panteras had cooling issues from the factory BTW) found that if they soldiered a penny into the hole in their restriction plate and used a standard small block Ford thermostat, their cooling issues all but disappeared. That trick worked fine until Ford discontinued the brass restrictor plate. 

    NOTE: The restrictor plate is installed "hat" down, as shown in the first picture above.

    This aluminum unit is designed to replace the brass plate and be installed as-is. Simply remove the original brass plate and tap this one back in its place. This unit must be used in conjunction with a standard thermostat , you cannot use the 351C unique thermostat with this block off plate. The tiny hole in the center is for air bleed only. Want to find out how to use a penny instead of purchasing this plate? Click hear to learn more!

    On a record hot day in Evansville, In at 108 degrees the car was driven a while. She never went over 200. Im so happy with this upgrade, get the WCCC part and a 160 thermostat and your problems are cured!

    Replaces Ford Part number D0AZ-8K517-A.


    For some helpful tips on upgrading your Cougar (or Mustang) cooling system, check out our video:


    Specifications:
    Shipping Weight: 0.02 LBS
    (weight shown may be the dimensional weight)

    This item must ship via

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    4.91 out of 5 stars
    Based upon 31 Review(s).
    5 Stars
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    It’s a Christmas Miracle! 73 Mustang 351cleveland

    5.00 out of 5
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    Pros:
    • Works as described
    Cons:
    • None
    This was installed along with a 160 thermostat. Before the needle was always near the top end of the range near hot. Now after this it’s in the middle at the highest temp. It does exactly as it says. Bypasses so the coolant actually goes through to cool the engine instead of flowing back to the water pump. Highly recommend you get one of experiencing running hot.

    Louisville CO
    2013

    So far so go!

    5.00 out of 5
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    Pros:
    • 30 minute install.
    Cons:
    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.

    France
    2018

    A breeze to install

    5.00 out of 5
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    managed to remove original restrictor plate with 2screwdrivers, and install this new plate without issues.
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    Staten Island nyc
    2016

    Modified water restrictor plate

    5.00 out of 5
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    Pros:
    • Great product
    Cons:
    • None
    Excellent product, works great, 170 deg with a 160 deg thermostat on a 92 deg day. Could use some instruction on removing the old plate. Text to support, said to use channel locks to pry out the old. Used a 7 inch channel and crushed the bottom of the old plate a bit then it mostly pried right out. Took about 15 min to get out. New one went right in using a socket to press it in place using a hammer

    Philadelphia
    2014

    Worked as advertised

    5.00 out of 5
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    Pros:
    • Works!
    Cons:
    • None
    I can't offer hard facts to say this works better than an original brass restrictor and the special 351C stat, but I can say this with a standard type stat works great. Did around 75 miles today, a 90 degree day, and at times up around 75 MPH and gauge never went past about 60% of the C-H range. Best temps I have ever had with this 72 XR7.

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    Today I was contact by Darrel on his day off to fix a problem that occurred with an order. I can not express enough how thoroughly pleased I was with his service, and that of Don Rush, for making it happen. I would recommend WCCC to anyone that...
    - Jerry
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    - Opeldidit
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