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Russell Performance

Russell Transmission Cooler Line Fittings

4.77 out of 5 stars 56 Customer Reviews

Russell Transmission fittings are designed to replace OEM adapters in TH350, TH400, 700R4, 4L80 and additional applications that utilize 1/4" NPSM threads. This will allow you to connect your braided line to your transmission case without cracking your transmission case . Available in -6 AN and -8 AN fittings.

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Russell Transmission Cooler Line Fittings 640520

Russell Transmission Cooler Line Fittings 640520

Russell Transmission Cooler Line Fittings 640520

Fittings, Transmission Cooler Lines to Case, -6 AN to 1/4 in. NPSM Straight Thread, Black Anodized, Pair

Part Number: RUS-640520

4.71 out of 5 stars ( 34 )

Estimated Ship Date: Monday 9/29/2025

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Estimated Ship Date: Monday 9/29/2025

Russell Transmission Cooler Line Fittings 641390

Russell Transmission Cooler Line Fittings 641390

Russell Transmission Cooler Line Fittings 641390

Fittings, Transmission Cooler Lines to Case, -6 AN to 1/4 in. 4L80E, 4L85E, Straight Thread, Black Anodized, Pair

Part Number: RUS-641390

4.85 out of 5 stars ( 20 )

Estimated Ship Date: Monday 9/29/2025

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Estimated Ship Date: Monday 9/29/2025

Russell Transmission Cooler Line Fittings 640530

Russell Transmission Cooler Line Fittings 640530

Russell Transmission Cooler Line Fittings 640530

Fittings, Transmission Cooler Lines to Case, -8 AN to 1/4 in. NPSM Straight Thread, Black Anodized, Pair

Part Number: RUS-640530

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

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Estimated Ship Date: Monday 9/29/2025

Russell Transmission Cooler Line Fittings 641400

Russell Transmission Cooler Line Fittings 641400

Russell Transmission Cooler Line Fittings 641400

Fittings, Transmission Cooler Lines to Case, -8 AN to 1/4 in. 4L80E, 4L85E, Straight Thread, Black Anodized, Pair

Part Number: RUS-641400

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Monday 9/29/2025

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Estimated Ship Date: Monday 9/29/2025

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