Choosing the Best Intake Coupler
Whenever you upgrade your stock air box to the more modern and performance-designed cold air intake, you will have to use and mount an intake coupler on the throttle body to accommodate the aftermarket tubing of the new system. Typically, it will come with the upgrading kit, so there is no need for you to look for one. But excessive heat and pressure can take a toll on its life, and a replacement will be necessary. Make sure you get a replacement that features:
- 2 intake tube diameters offer precise fit for your new performance air intake tube, which is significantly larger, and the throttle body. The smaller diameter is mounted to the throttle body, while the bigger one goes to the new tube or hose. You should choose this coupler construction if the specifics of your new system requires it. But if you can go for the cheaper but equally reliable uniform coupler, do so.
- Uniform intake tube diameters are a simpler constructed coupler with one diameter size. They are cheaper and are usually made from rubber, so choose one from this construction if your aftermarket cold air intake system doesn't require a bigger converter from the standard size of the throttle body.
Heat and pressure resistant materials:
- Silicones are polymers that display very high resistance to heat, water, and air, and have the same texture as rubber. You can easily distinguish a silicone intake coupler because they come in two-intake tube designs and different colors. These sophisticated features of a silicone coupler explain their high price but should not stop you from getting one because they are a better choice in terms of performance and service life. li>
- Rubber is known for its high elasticity and weather resistance, but it doesn't fare well in the heat resistance department. It basically gets blown by excessive heat, causing it to leak. Although rubber intake couplers may be cheaper than silicone products, they don't last as long as silicone-made couplers. If you are not short of budget, we recommend you get the more expensive but definitely better silicone intake coupler.
Sold in kit
Getting an intake coupler that comes complete with the necessary clamps will make your life easier. There should be two clamps to secure the coupler to the throttle body of the vehicle and to the new intake tube. You can also replace these clamps should they become irregular over time.
DIY Installation of an Intake Coupler
Leaks on your throttle body can cause significant drop on your engine performance, so make sure that your intake coupler is still good for its function. It should fully connect your aftermarket intake tube to the throttle body, so colder, denser air is continuously delivered to the intake system of your engine. If the intake coupler is blown, you need to immediately replace it. You can actually choose to DIY with this easy step-by-step instruction we have here:
Difficulty level: Moderate
Things you'll need:
- Flat-head screwdriver
- Clean rug or old cloth
Wait for your engine to cool before you start the removal and installation of the intake coupler.
Step 1: Loosen the band clamp that secures your old intake coupler to the throttle body with a flat-head screwdriver, and then the other one that secures it to the aftermarket tube.
Step 2: Free the coupler from the intake tube by carefully twisting out, and then pull the other end from the throttle body.
Step 3: Clean the areas where it had been installed from deep-seated dirt, moisture, and other unwanted elements.
Step 4: Attach the clamps to the coupler without tightening them. Install the new intake coupler into the throttle body and the intake tube.
Step 5: Tighten the clamps with a flat-head screwdriver. NOTE: DO NOT overtighten as this may cause excessive stress on the coupler, resulting to early damage.
To check if you got the installation right, run the engine for some time. If you have a rubber coupler, this will expand and might need some adjustments. Doing so will also allow you to check for any leaks and other irregularities on your newly installed coupler. If you are satisfied that you got the task right, you have just restored your aftermarket cold air intake system back to its best working condition!