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SKU #: BDUSA-4GEN-S MPN #: 4GEN-S

Blend Door USA Complete HVAC Repair Kit 10-18 Ram

$330.00
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Select Single or Dual Zone
Description
Why You Need a Blend Door Repair Kit for Your Ram 2500 If your 2010-2018 Ram 2500 HVAC system is stuck on the wrong vent setting or won’t switch between hot and cold, you’re likely dealing with a broken blend door. This is a common failure in fourth-gen Rams (2010–2018) due to weak factory plastic doors. Symptoms of blend door failure: Clicking or knocking from behind the dash Airflow stuck on defrost or floor One side of the cab stays too hot or cold No change in airflow direction This kit offers a one-time fix using aluminum doors that won’t fail like the stock setup. What’s Included in the Blend Door USA Repair Kit This HVAC repair kit replaces every major door in the system with CNC-machined aluminum components built to last. Included in the kit: Aluminum Blend Door Mode 1 and Mode 2 Doors Reinforced Recirculation Door Bracket Built to work with your existing actuators Lifetime guarantee Made in Michigan, USA This is not a temporary patch. It’s a full rebuild using upgraded parts. Choosing Between Single and Dual Zone Not sure which HVAC system you have? Here’s how it breaks down: Single Zone HVAC: Controls both driver and passenger side temperature together. Dual Zone HVAC: Allows separate temperature control for driver and passenger sides. Important: This kit must match your truck’s factory HVAC configuration. It is not possible to upgrade a Single Zone truck to a Dual Zone system by installing Dual Zone doors. Why This HVAC Blend Door Kit Is a Smarter Fix The factory plastic doors are known to break inside the HVAC box, leaving you with unreliable airflow and expensive repairs. This aluminum kit prevents future failures, keeps your cabin temp consistent, and avoids multiple trips behind the dash. Benefits: Replaces the most failure-prone HVAC components Solves heat and A/C airflow issues Works with your stock actuators Designed to outlast the truck No more plastic to break

Why You Need a Blend Door Repair Kit for Your Ram 2500

If your 2010-2018 Ram 2500 HVAC system is stuck on the wrong vent setting or won’t switch between hot and cold, you’re likely dealing with a broken blend door. This is a common failure in fourth-gen Rams (2010–2018) due to weak factory plastic doors.

Symptoms of blend door failure:
  • Clicking or knocking from behind the dash
  • Airflow stuck on defrost or floor
  • One side of the cab stays too hot or cold
  • No change in airflow direction

This kit offers a one-time fix using aluminum doors that won’t fail like the stock setup.

What’s Included in the Blend Door USA Repair Kit

This HVAC repair kit replaces every major door in the system with CNC-machined aluminum components built to last.

Included in the kit:

  • Aluminum Blend Door
  • Mode 1 and Mode 2 Doors
  • Reinforced Recirculation Door Bracket
  • Built to work with your existing actuators
  • Lifetime guarantee
  • Made in Michigan, USA

This is not a temporary patch. It’s a full rebuild using upgraded parts.

Choosing Between Single and Dual Zone

Not sure which HVAC system you have? Here’s how it breaks down:

  • Single Zone HVAC: Controls both driver and passenger side temperature together.
  • Dual Zone HVAC: Allows separate temperature control for driver and passenger sides.

Important: This kit must match your truck’s factory HVAC configuration. It is not possible to upgrade a Single Zone truck to a Dual Zone system by installing Dual Zone doors.

Why This HVAC Blend Door Kit Is a Smarter Fix

The factory plastic doors are known to break inside the HVAC box, leaving you with unreliable airflow and expensive repairs. This aluminum kit prevents future failures, keeps your cabin temp consistent, and avoids multiple trips behind the dash.

Benefits:
  • Replaces the most failure-prone HVAC components
  • Solves heat and A/C airflow issues
  • Works with your stock actuators
  • Designed to outlast the truck
  • No more plastic to break
Manuals and Guides
About Blend Door USA
Browse Blend Door USA Parts Online by Make, Model, and Year. When you change the A/C or Heat vent location knob on your Ram, does it not change which vent(s) the air is coming out of? Sounds like your truck has fallen victim to the infamous failed blend door issue in which the door literally falls off and lays in the bottom of the HVAC box behind your dash. Unfortunately, this is a known issue, and if you're ready to fix it once and for good, check out these high quality aluminum doors from Blend Door USA.

Blend Door USA manufactures solid aluminum replacement HVAC doors to replace the failing plastic doors in your vehicle. They are located in Applegate, Michigan and do all of their production there, nothing is imported from foreign sources. Blend Door USA began in 2006 when they started producing aluminum replacement doors for some of the big name automobile manufactures and have produced in excess of 100,000 doors under these contracts and are still producing them to this day. They are the only manufacturer to mass produce aluminum replacement HVAC doors for any major corporation.

In terms of the manufacturing side, Blend Door USA manufactures all of their products from solid pieces of aluminum. There are no welds or rivets in anything, and its all CNC machined to maintain the highest quality possible and to ensure a perfect fit every time.

The drivers are key-cut so they will properly engage the doors and will never fail. In the instances where a key-cut driver won't work, the drivers are drilled with an offset bore and are held in place with a cap screw. This allows the drivers to stay engaged with the door when there is not an actuator holding it in place, such as the 3rd Gen Ram Dual Zone Blend Door drivers. All splines are broach cut into the drivers to ensure perfect engagement with the electronic actuators.

So why use aluminum instead of steel? Aluminum is much lighter than steel, and it will never rust. Since the aluminum is lighter, they are able to make the doors significantly thicker and still maintain the same weight. This allows the doors to be much stronger than any steel replacement ever could be. Aluminum can be machined in a solid piece, which is why the doors do not have any welds or rivets holding them together. Steel doors are tack welded together, which creates a weak spot and potential failure. For an HVAC system, aluminum is superior in every way. Blend Door USA doors are the strongest in the market, period. BLEND DOOR USA FOAM SEAL BDUSA uses open cell foam to seal their doors. Most factory open cell foam is a polyester based foam that is biodegradable, which is why it comes apart and blows out of the vents. Open cell foam is a synthetic polyether based foam that is not biodegradable and therefore will not deteriorate like the original foam. A common question is œWhy dont these use closed cell foam like the other guys? The simple answer is, that would be nice, but it hasn't been found that closed cell foam will perform satisfactorily in an HVAC box. There are a few requirements that foam must meet in order to be acceptable for use on these replacement doors:
  • The durometer or œsquishiness of the foam must be soft enough to sufficiently seal the box. The plastic housings have a very loose tolerance for what can be considered œflat. Weve had boxes here that have had as much as 1/4 inch gap on the sealing surface when the door was closed. The foam must be able to compress completely on the high side in order fully seal on the low side. Most closed cell foams are too hard to seal properly.
  • The foam must be durable enough to withstand the extreme heat and extreme cold that an automobile will experience. The air conditioner evaporator will produce air temperature around 40 degrees F and the heater will produce around 200 degrees F. Dont forget the interior temp when the car sits outside in the summer sun all day in Arizona or all night in a North Dakota winter. Very few types of foam can withstand this kind of abuse.
  • The foam must be American made. We pride ourselves with an American made product produced by American workers. We will not lower our standards by using a cheaper foreign made foam to increase our profit.
CONCLUSION: Blend Door USA is so confident in their product, that its guaranteed for life. Now you can fix your heater for those cold winter mornings and fix your air conditioner for those hot summer days. Fix it once; fix it right; with Blend Door USA.
Video
Diesel Talk | Blend Door USA
Does your Ram’s A/C or heat vent knob not change airflow direction? Your truck might have the infamous failed blend door issue! The plastic door breaks and falls into the HVAC box, leaving you stuck with unwanted airflow. Blend Door USA has the solution: solid aluminum replacement HVAC doors—CNC-machined, rust-free, and guaranteed for life. Made in the USA, these doors are built to last, unlike flimsy factory parts. Fix your vents once and for all with Blend Door USA!
Video
Diesel Talk | Blend Door USA Complete HVAC Repair Kit
Removing the dash to replace the HVAC doors on your truck is not a fun process. Ensure you only do it ONCE and use a high-quality set from Blend Door USA. These doors are precision manufactured in the USA and will outlast your pick-up.
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