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Dorman 800-994 Aluminum Line Block Off For 5/16 Line

4.5 4.5 out of 5 stars 87 ratings
$23.06
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Purchase options and add-ons

  • Save time and money by repairing only the damaged section, not the entire A/C line assembly
  • Easy to install
  • Sturdy aluminum construction
  • Also available as part of Dorman's A/C Line Repair Kit
  • Support available - every Dorman part is backed by Dorman's ASE Blue Seal Certified technical support team
› See more product details
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Dorman 800-994 Aluminum Line Block Off For 5/16 Line
$23.06
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Dorman 800-996 Aluminum Line Block Off For 3/4 Line
$30.19
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Dorman 800-995 Aluminum Line Block Off For 5/8 Line
$19.14
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Top Brand: Dorman

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From the brand

Previous page
  2. Dorman - Driving New Solutions

    Dorman gives repair professionals and vehicle owners greater freedom to fix cars and trucks. For over 100 years, we have been driving new solutions for the motor vehicle aftermarket, releasing tens of thousands of replacement products engineered to save time and money, and increase convenience and reliability.

  3. Steering and Suspension top category
  4. Undercar top category
  5. Dorman 926-959 Upgraded Aluminum Engine Oil Filter Housing with Oil Cooler and Filter Compatible ...
    Dorman 55247 Powerband Clamp 3.75-4.5 Inch for Select Ram Models (OE FIX)
    Dorman 600-102XD 4WD Front Differential Actuator Compatible with Select Chevrolet/GMC/Pontiac Mod...
    Dorman 097-826HP Plastic Oil Drain Plug Compatible with Select Ford/Lincoln Models, 5 Pack (OE Fix)

    Innovative Repair Solutions

    Visit the Store

  6. Underhood top category

  7. How did we get our start?

    Our story began with the first mass market automobile. We were one of the first companies to deliver replacement products for the automotive aftermarket, and we remain at the forefront today.

    Why do we love what we do?

    People's lives and livelihoods depend upon cars and trucks. We give people greater freedom to fix these vehicles by putting owners and installers first.

    What products do we make?

    We deliver an always-evolving catalog of parts, covering light-, medium-, and heavy-duty vehicles, from chassis to body, underhood to undercar, and hardware to complex electronics.

  8. Body Top Category
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From the manufacturer

Dorman's global headquarters is located in Colmar, Pennsylvania, USA.

Dorman is a leading auto parts manufacturer founded in the United States and headquartered in Colmar, Pennsylvania.

Dorman was one of the first companies to deliver replacement aftermarket auto parts.

Our story began with the first mass market automobile. We were one of the first companies to deliver replacement products for the automotive aftermarket, and we remain at the forefront today.

Dorman releases thousands of products made to save people time, money and effort on repairs.

We give repair professionals and vehicle owners greater freedom to fix cars and trucks by focusing on solutions that save time and money and increase convenience and reliability.

Dorman gives people greater freedom to fix cars and trucks by focusing on new solutions first.

Our team is constantly looking for problems to solve and turning them into new product ideas. Some solutions, like our OE FIX products, you can't even get from original vehicle manufacturers.

Dorman has tens of thousands auto repair solutions and releases new parts every month.

We offer an always-evolving catalog of parts, covering both light duty and heavy duty vehicles, from chassis to body, from underhood to undercar, and from hardware to complex electronics.

Product Description

Remarkably durable against corrosion and rust, Dorman's Air Conditioning Line Connectors make leaks a distant memory. Return air conditioning to original operating temperatures and prevent future breakdowns.

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Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Dorman 800-994 Aluminum Line Block Off For 5/16 Line

Dorman 800-994 Aluminum Line Block Off For 5/16 Line

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Dorman 800-994 Aluminum Line Block Off For 5/16 Line
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Dorman 800-671 A/C Line Splice Kit for 3/8 Line With No. 6 Hose
Dorman 800-671 A/C Line Splice Kit for 3/8 Line With No. 6 Hose
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Price$23.06$22.33$20.10$30.19$19.14$51.95
Delivery
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Customer Ratings
4.54.5 out of 5 stars87
4.64.6 out of 5 stars259
4.04.0 out of 5 stars41
4.54.5 out of 5 stars65
4.64.6 out of 5 stars174
4.54.5 out of 5 stars75
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Customer reviews

4.5 out of 5 stars
4.5 out of 5
87 global ratings
Super easy.
5 Stars
Super easy.
I used these to block off the rear AC of my 12' E350 van. I found where the line splits and within 12" of the T, I cut the lines with a lo profile pipe cutter and then sanded them to ensure smoothness. I had a local shop evacuate the A/C system before I cut the lines and they did a vacuum test before pressurizing it again. The A/C has been blowing cold ever since! Very happy with this blocker. I used thread locker on the threads and some PAG 46 refrigerant oil to lube up the o-rings to ensure a great fit. I also used torque wrenches to ensure I didn't over tighten the bolts. The hardest part was getting the right diameter fitting. I recommend cutting the lines as close to the T joint as possible. I've read that if you cut at the base of the vehicle then the compressor oil may pool down there and burn out your compressor.
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Top reviews from the United States

anikko
5.0 out of 5 stars Stopped AC leak
Reviewed in the United States on October 19, 2023
Verified Purchase
Fixed my problem for $40 instead of a mechanic $4000 job.
Helpful
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Joe L
5.0 out of 5 stars Super easy.
Reviewed in the United States on October 21, 2020
Verified Purchase
I used these to block off the rear AC of my 12' E350 van. I found where the line splits and within 12" of the T, I cut the lines with a lo profile pipe cutter and then sanded them to ensure smoothness. I had a local shop evacuate the A/C system before I cut the lines and they did a vacuum test before pressurizing it again. The A/C has been blowing cold ever since! Very happy with this blocker. I used thread locker on the threads and some PAG 46 refrigerant oil to lube up the o-rings to ensure a great fit. I also used torque wrenches to ensure I didn't over tighten the bolts. The hardest part was getting the right diameter fitting. I recommend cutting the lines as close to the T joint as possible. I've read that if you cut at the base of the vehicle then the compressor oil may pool down there and burn out your compressor.
Customer image
Joe L
5.0 out of 5 stars Super easy.
Reviewed in the United States on October 21, 2020
I used these to block off the rear AC of my 12' E350 van. I found where the line splits and within 12" of the T, I cut the lines with a lo profile pipe cutter and then sanded them to ensure smoothness. I had a local shop evacuate the A/C system before I cut the lines and they did a vacuum test before pressurizing it again. The A/C has been blowing cold ever since! Very happy with this blocker. I used thread locker on the threads and some PAG 46 refrigerant oil to lube up the o-rings to ensure a great fit. I also used torque wrenches to ensure I didn't over tighten the bolts. The hardest part was getting the right diameter fitting. I recommend cutting the lines as close to the T joint as possible. I've read that if you cut at the base of the vehicle then the compressor oil may pool down there and burn out your compressor.
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2 people found this helpful
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MOBILTECH-Amazon Customer
5.0 out of 5 stars As vehicles age the expense to repair "non-essential" convenience items ...
Reviewed in the United States on September 24, 2016
Verified Purchase
As vehicles age the expense to repair "non-essential" convenience items often exceeds our willingness to "invest" in our old clunker. These problem solvers offered by Dorman sure make fixing van and SUV air conditioning systems affordable. You can choose to eliminate rear A/C or repair it with a Dorman line splice. Thanks Amazon for selling these affordably!
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Derek
5.0 out of 5 stars easy to use (need a torque wrench)
Reviewed in the United States on August 27, 2015
Verified Purchase
easy to use (need a torque wrench). Blocked off my leaking rear AC and now at least I have cold air up front!
Helpful
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william barrett
5.0 out of 5 stars Five Stars
Reviewed in the United States on May 25, 2017
Verified Purchase
These things work awesome, great solution to my problem
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Mo
5.0 out of 5 stars Five Stars
Reviewed in the United States on August 15, 2015
Verified Purchase
It was easy to install. Already a week and it is holding fine so far.
Helpful
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Jørgen T.
5.0 out of 5 stars Five Stars
Reviewed in the United States on September 8, 2017
Verified Purchase
Perfect fit. Did the job.
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Putrid Sweetflower
1.0 out of 5 stars Brass fitting cracked during installation attempt.
Reviewed in the United States on August 5, 2014
Verified Purchase
Sadly, the brass fitting cracked as I was trying to attach it to the refrigerant line. Since the brass piece broke, I was unable to use the other parts to finish the job. Perhaps I just received a bad brass item...?
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Top reviews from other countries

Amazon Customer
5.0 out of 5 stars Honda Odyssey 2000 Rear AC Block Kit
Reviewed in Canada on June 23, 2018
Verified Purchase
This fits perfectly well. Other pipe is 5/8" in in 2000 Honda Odyssey. 5/16" pipe block part arrived after 2-3 weeks of ordering as it was out of stock.
5/8" one brass ring was little tight on the pipe so I have to use sand paper to slide it on as per enclosed diagram. There is no information on internet on what kit size to use but for my 2000 Odyssey, 5/16" and 5/8" kits work. Posting for others if it helps.
2 people found this helpful
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Ramin Davoudi
5.0 out of 5 stars Its most cheap solution to fix ac of your car
Reviewed in Canada on October 31, 2020
Verified Purchase
Welding the line set of your rear ac on your van cost 6 times more , and its best way to plug rear ac line set and fix front ac
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Ryan P
5.0 out of 5 stars 5 Stars
Reviewed in Canada on August 12, 2021
Verified Purchase
Easy to install, does the job
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samih shakir
5.0 out of 5 stars Did the job
Reviewed in Canada on September 8, 2019
Verified Purchase
Did the job
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FID
3.0 out of 5 stars This did work for me.
Reviewed in Canada on July 10, 2022
Verified Purchase
This took a lot of prep work as there was a plastic coating on air conditioning line and still had to use lots of elbow grease to get it to size... this was used to block rear seat ac in a 2017 pathfinder so we could have air in the front, The line to the back is $700 to replace and is on backorder with no date, so happy to have found this solution.
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