Heater Plenum for all 1965-1966 Mustangs and 1967-1968 Mustangs without Air Conditioning.This quality replacement heater plenum is molded from new ABS plastic for good looks and durability. Attaches to the heater box and allows the hot air to travel to the dash and defrost the windshield. Cable clamp and screw are attached, and inner door has closed cell foam bumpers installed.
Product ReviewsWrite a review
Heater Plenum 1965-1968 is rated out of 5 by 9.
Rated 5 out of 5 by PhilD from Small, seemingly insignificant part -- NOT! I was desperate to restore heat to my beloved '66 convertible, with cooler days coming. I ordered the heater core and set about getting the hot air flowing. Then, I saw the existing heater plenum - cardboard! It was ratty, ripped, and almost non-functional. If you are restoring your heating system, BUY THIS. It's a cinch to install (much easier while you have the heater box out...I found out the hard way) and the flaps that control defrost and heat function much better within the rigid ABS frame. DO IT!
Date published: 2015-01-07
Rated 4 out of 5 by JoeJo from No cardboard Nice replacement to the original cardboard plenum. The plastic material is nice and it comes ready to install with the door
Date published: 2015-03-20
Rated 5 out of 5 by Mustangdude from Heater Plenum Review Purchased after noticing my original cardboard unit was in bad shape. Wish I had noticed before heater core replacement. I have not yet installed but would likely have been easier if done during core replacement.
Date published: 2015-05-06
Rated 1 out of 5 by Saugus Steve from The Plenum The heater plenum looks correct except it has a glossy black cheap finish, nothing like the original. You wouldn't want to put this into a concourse show car. I may just use the original 50 year plenum.
Date published: 2015-02-24
Rated 5 out of 5 by Diggler from Better Than Original The original was that flocked paperboard and was beat all to pieces. I bought this as a replacement and it works great with my rebuilt heater. Highly recommend!
Date published: 2015-01-26
Rated 5 out of 5 by stanglp from excellent fit My heater plenum was broke where cable was located. New one is better material (plastic) unlike the cardboard type of material original is made from.
Date published: 2015-02-01
Rated 5 out of 5 by Harolds from Good quality product! This was definitely a step up from the original plenum that was in the car...and falling apart. Fairly easy to install and a good solid replacement.
Date published: 2015-02-24
Rated 5 out of 5 by jah141 from Heater Plenum Great replacement for the OEM Plenum by far. Have thought of drilling some holes on the end to let air flow towards my feet also not just the seat.
Date published: 2015-02-19
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CJ's Low Price:$22.99
By Bill Tumas: We’re here with a reproduction heater plenum for your 1964 thorough 1968 Mustang. This reproduction plastic heater plenum will fit all 1964 through '66 Mustangs, as well as '67 through '68 when not equipped with factory air conditioning. Now, it's next to your heater box and it's going to connect your two defroster hoses. The reproduction heater plenum includes the flapper door and comes ready to install.