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Adapters For Transmission Cooler Lines On 2003 4.2 Inline 6 Chevy Trailblazer  

Updated 04/10/2017 | Published 04/09/2017



Question:

Hi, Im looking to buy adapters for my transmission cooler lines for my trailblazer. I would need the line adapters to the transmission and also to the existing factory trans cooler. Im looking to convert the factory aluminum lines to rubber hosing. I know you sell the barb fitting adapters but Im not having any luck finding them on your website. 2003 4.2 I6 Chevy Trailblazer 4L60 auto transmission Thanks in advance

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Expert Reply:

For your 2003 4.2 I6 Chevy Trailblazer with 4L60 automatic transmission, I recommend the Derale Snap-In Radiator Adapter Fitting for GM # D13035 to connect to your radiator and use a hose.

For your other adapters, you will need to measure each line. We have compression fittings for most sizes. Based on other Chevy vehicles, you may need the Derale Transmission Line Compression Fitting Kit - 1/2" Line to 1/2" NPT Barb # D13033, the Derale Transmission Line Compression Fitting Kit - 3/8" Line to 3/8" NPT Barb # D13032 or the Derale Transmission Line Compression Fitting Kit - 5/16" Line to 3/8" NPT Barb # D13031.

Another adapter that you may need is the Derale Radiator Adapter Fittings for GM # D13018 which is a 5/8 inch inverted flare fitting.

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Jason S
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