Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968

CJ's Part Number: HSK1
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$15.99
1481155200 18180
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Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968
Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968 Play Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968 Video 1

Product Description

Heater Seal Kit for all 1965-1966 Mustangs and 1967-1968 Mustangs without Air Conditioning.

When you're replacing or rebuilding the heater box assembly in your 1965-1966 Mustang or your 1967-1968 Mustang without air conditioning, it's a good idea to install new heater seals too. This Heater Seal Kit has everything you need to replace those old, broken-down original seals. You and your passengers will enjoy a much warmer ride after you put these seals in!

Features & Benefits:
- Complete Kit with Everything You'll Need to Replace the Original Seals
- Fifteen (15) Pieces Total
- Works on All 1965-1966 Mustangs and on 1967-1968 Mustangs Without Air Conditioning
- Will Keep Air from Escaping from Your Heater Box Assembly
- Helps Your Heater Function and Warm Up Your Mustang's Interior Better
- Direct Fit Replacements that Easily Install in the Factory Locations

This Heater Seal Kit is just what you need to keep air from escaping from your heater box assembly. Why go through all of the trouble of rebuilding or replacing your heater box assembly if warm air is going to escape and not reach you and your passengers? Chances are, those old seals that are currently in your Mustang are cracked and broken down. Replace them with the seals from this kit, and you'll notice a big difference in how warm the interior of your vintage Pony gets when you have the heat running.

You'll get 15 pieces total: everything you need to replace all of the old seals. They are all direct fit replacements that easily install in the factory locations. All you'll need is a spray-on adhesive or a weatherstrip adhesive, and you'll find these seals are incredibly easy to put in.

Please Note: This Heater Seal Kit will work on all 1965-1966 Mustangs, but it'll only work on 1967-1968 Mustangs that do NOT have air conditioning. For a Heater Seal Kit for 1967-1968 Mustangs with air conditioning, please see HSK2.

Order a Heater Seal Kit for your 1965-1966 Mustang or 1967-1968 Mustang without Air Conditioning from CJ Pony Parts today!

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Mustang Applications

This product will fit the following Ford Mustang years:

Product Reviews

Write a review
Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968 is rated 4.7 out of 5 by 16.
Rated 5 out of 5 by from Must-buy kit for heater rebuilds I had to replace my firewall insulation, so I figured that I may as well rebuild the heater box as well. Good thing, too, as the seals in my heater box looked to have been nonexistent since the 80s. Make sure to use spray adhesive, and be very careful to not shatter the fiberglass heater box when you reinstall the components. Also, the CJs instructions were fantastic; couldn't have done this install without them.
Date published: 2015-08-18
Rated 4 out of 5 by from Heater Seal Kit - Good Review The seal kit was good although the description didn't alert that some type of adhesive would be needed. I assumed (incorrectly) that each piece would have had "peel and stick" pieces. Thankfully I had a can of spray adhesive in stock. Time will tell if the pieces stay in place. The drawing could have been better detailed as to where some of the pieces fit. Otherwise, the fit was good and product was acceptable.
Date published: 2015-04-22
Rated 4 out of 5 by from Everything fits Instructions are a little hard to follow, especially if all your previous gaskets are long gone like mine were. But with a little deduction you can figure it out. If you are getting heat on your feet in the summer, this is the fix. Also you will find lots of crud in the box that is good to clean out.
Date published: 2016-01-27
Rated 4 out of 5 by from Good Kit Working on my original '68 Mustang heater box. The kit had everything I needed including the heater-blower seal (from the heater box to the fire-wall). Everything fit well, however, the instruction diagram was a poor photocopy and was really difficult to read, thank God for Youtube.
Date published: 2015-04-16
Rated 5 out of 5 by from Nice fit Rebuilt my 66 heater box using these. Fit well and everything needed was in the kit. Using spray adhesive to secure the seals isn't much fun, be nice if there was a way for the part to come with an adhesive back. Still all in all a great product.
Date published: 2015-12-23
Rated 5 out of 5 by from Excellent product All of the foam parts are covered with this kit. The diagram shows where all the parts are located in the blower. The only drawback they don't show you is there is no adhesive on these parts. I had my own 3M spray glue I used. Worked perfectly.
Date published: 2016-01-01
Rated 5 out of 5 by from Just right After I got the old heater box out I decided to order a new box. The original was in bad shape and I had cracked it getting it out. Also ordered new fan & motor combo. Original fan would not come off the shaft. Will keep the gasket kit.
Date published: 2016-03-19
Rated 5 out of 5 by from Heater Seal Kit Good product I have 2 1967 Mustangs did one and I can tell the difference in both air flow and temp. Only improvement would be maybe a peel away self stick on one side would take the install to the next step.
Date published: 2015-02-19
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Product Questions

I just purchased the heater box seal kit, Question is how to adhere the pieces?

Asked by: GPhrye
You can use a spray on adhesive or weatherstrip adhesive.
Answered by: rk cjpp
Date published: 2015-11-04
  • 2016-12-08T08:18CST
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Product Video

Heater Seal Kit 1965-1966/Without Air Conditioning 1967-1968 Video Transcript
By Bill Tumas: We're here with a heater seal kit, fitting 1964 through 1968 Mustangs. This 15-piece seal kit gives you everything necessary to reseal the heater box in your 1964 through 1968 Mustang. It will fit '64 through '66 with or without factory air conditioning, and will fit '67 through '68 without factory air conditioning. The only difference between the two kits is this seal here is for your '64 through '66 , while this one here will fit your '67 through '68. Whether you're replacing a heater plenum or rebuilding your original heater box, make sure you pick up one of our heater seal kits to make the system work properly.