Thermostat Gasket
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Felpro Thermostat Gasket

Part No. 35666 Warranty Details  

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From the leader in aftermarket engine sealing, FEL-PRO the gaskets professionals trust.

Product Features:
  • Each gasket, set, or seal is built to meet or exceed all original equipment specifications and is validated for fit, form, and function
  • Application specific design to ensure a perfect fit and correct operation for unsurpassed quality that you can trust
  • FEL-PRO gasket sets are engineered and manufactured specifically for the aftermarket repair environment
  • Every part for the repair procedure is included in the kit unless otherwise noted
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Material:Rubber

REVIEW SNAPSHOT®

by PowerReviews
FelproThermostat Gasket
 
4.5

(based on 14 reviews)

Ratings Distribution

  • 5 Stars

     

    (10)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

92%

of respondents would recommend this to a friend.

Pros

  • Easy to install (12)
  • Durable (6)

Cons

No Cons

Best Uses

  • Replacement (10)
  • Everyday driving (8)
    • Reviewer Profile:
    • Auto enthusiast (5), Mechanic (5), Casual driver (4), Truck enthusiast (4)

Most Liked Positive Review

 

works

soft and flexable

replace any time thermostat housing is removed as gaskets will be hard as a rock and brittle after use

my thermostat housing also required a paper gasket...Read complete review

soft and flexable

replace any time thermostat housing is removed as gaskets will be hard as a rock and brittle after use

my thermostat housing also required a paper gasket to seal the housing to manifold

VS

Most Liked Negative Review

 

NO DIRECTIONS

This gasket is tapered . It fits around the thermostat but there are no direction as to which way the taper goes. Towards the engine or towards the thermostat housing. I put it in...Read complete review

This gasket is tapered . It fits around the thermostat but there are no direction as to which way the taper goes. Towards the engine or towards the thermostat housing. I put it in with the taper going towards the engine . So far no leaks or cooling system problems. Think they could have put in a diagram or instruction on the packaging.

Reviewed by 14 customers

Displaying reviews 1-10

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(1 of 1 customers found this review helpful)

 
5.0

Perfect Replacement

By 

from Star Prairie, WI

About Me Auto Enthusiast, Casual Driver, Truck Enthusiast

See all my reviews

3 or more reviews submitted

Pros

  • Easy To Install

Cons

    Best Uses

    • Everyday Driving
    • Replacement

    Comments about Felpro Thermostat Gasket:

    Perfect fit for my 2006 Grand Prix with Series III 3.8 V6. It has a taper to it; thin side down to motor and thick side up to housing. I used just a touch of silicon grease for an easy fit.

    (2 of 5 customers found this review helpful)

     
    4.0

    Does the job

    By 

    from Tama, IA

    About Me Mechanic

    See all my reviews

    3 or more reviews submitted

    Pros

    • Easy To Install

    Cons

    • Which Way Is Up

    Best Uses

      Comments about Felpro Thermostat Gasket:

      2005 Impala 3.8
      Works although I wasn't sure which way was up. Found out the next day I also needed a gasket on the thermostat housing. Could have been an install issue (which way is up) but just threw a gasket on the housing to be safe.

      (3 of 6 customers found this review helpful)

       
      5.0

      I would buy this product again

      By 

      from Butler, PA

      About Me Casual Driver

      See all my reviews

      Verified Buyer
      Helpful Reviewer

      Pros

      • Durable
      • Easy To Install
      • Improves Engine Efficiency
      • Increases Power
      • Lightweight

      Cons

        Best Uses

        • Everyday Driving
        • Replacement

        Comments about Felpro Thermostat Gasket:

        Should be changed when installing thermostate

        (3 of 7 customers found this review helpful)

         
        5.0

        Simple to install

        By 

        from Northern NJ

        About Me Casual Driver

        See all my reviews

        Verified Buyer
        Helpful Reviewer

        Pros

        • Easy To Install

        Cons

          Best Uses

          • Replacement

          Comments about Felpro Thermostat Gasket:

          Not much to say, needed the gasket as the thermostat I purchased did not come with one

          (6 of 11 customers found this review helpful)

           
          1.0

          NO DIRECTIONS

          By 

          from Crystal River FL

          About Me Auto Enthusiast

          See all my reviews

          Ask me a question

          Verified Buyer
          3 or more reviews submitted

          Pros

            Cons

            • Difficult To Install

            Best Uses

              Comments about Felpro Thermostat Gasket:

              This gasket is tapered . It fits around the thermostat but there are no direction as to which way the taper goes. Towards the engine or towards the thermostat housing. I put it in with the taper going towards the engine . So far no leaks or cooling system problems. Think they could have put in a diagram or instruction on the packaging.

              (4 of 7 customers found this review helpful)

               
              5.0

              Works Very Well

              By 

              from Pennsylvainia

              See all my reviews

              Verified Buyer
              Helpful Reviewer

              Pros

              • Durable
              • Easy To Install

              Cons

                Best Uses

                • Replacement

                Comments about Felpro Thermostat Gasket:

                This is a "premium" seal. Just remember to clean the mating housing surfaces well and to apply a very thin layer of light grease or oil to the seal before inserting into the housing.

                (9 of 16 customers found this review helpful)

                 
                5.0

                O,RING SEAL GASKET

                By 

                from mooresville nc

                About Me Mechanic

                See all my reviews

                Verified Buyer
                Helpful Reviewer

                Pros

                • Durable
                • Easy To Install

                Cons

                  Best Uses

                  • Everyday Driving
                  • Replacement

                  Comments about Felpro Thermostat Gasket:

                  seal was exactly like OEM

                  (10 of 18 customers found this review helpful)

                   
                  5.0

                  works

                  By 

                  from mo

                  About Me Auto Enthusiast, Mechanic, Truck Enthusiast

                  See all my reviews

                  Ask me a question

                  Verified Buyer
                  3 or more reviews submitted

                  Pros

                  • Easy To Install

                  Cons

                    Best Uses

                    • Replacement

                    Comments about Felpro Thermostat Gasket:

                    soft and flexable

                    replace any time thermostat housing is removed as gaskets will be hard as a rock and brittle after use

                    my thermostat housing also required a paper gasket to seal the housing to manifold

                    (10 of 19 customers found this review helpful)

                     
                    5.0

                    exact replacement

                    By 

                    from iowa

                    About Me Auto Enthusiast, Casual Driver, Mechanic

                    See all my reviews

                    3 or more reviews submitted

                    Pros

                    • Durable
                    • Easy To Install

                    Cons

                      Best Uses

                      • Everyday Driving
                      • Performance Driving
                      • Replacement

                      Comments about Felpro Thermostat Gasket:

                      Gasket was exact replacement for my pontiac, installed no problem and no leaks!

                      (9 of 16 customers found this review helpful)

                       
                      5.0

                      always remember to replace your gaskets

                      By 

                      from Rockville, Indiana

                      About Me Auto Enthusiast, Truck Enthusiast

                      See all my reviews

                      Verified Buyer
                      Helpful Reviewer

                      Pros

                      • Easy To Install

                      Cons

                        Best Uses

                        • Everyday Driving

                        Comments about Felpro Thermostat Gasket:

                        good price, worked as it was supposed to.

                        Displaying reviews 1-10

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                        Do you have questions about this product?

                         

                        Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                        1 Question | 1 Answer
                        Displaying question 1
                        • Q:

                          This gasket is advertised as being an improved design, and I noticed that it is tapered on one side. Is it designed for the tapered side go into the intake, or into the thermostat housing?
                          Asked on 12/12/2010 by Anonymous from Wyandotte, Michigan

                          1 answer

                          • CUSTOMER CARE

                            A:

                            For further assistance, please provide the year, make, model and engine size of your vehicle.

                            Answered on 12/23/2010 by Mike the Auto Parts Master from AAP
                        Displaying question 1

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