ATI Trick Sticks locking transmission dipsticks are available for a variety of transmissions. These dipsticks prevent pressure from forcing fluid out of the tube and going everywhere. They are required by NHRA cars running 10.99 or quicker.

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TCI For Ford AOD Firewall-Mount Transmission Dipstick.

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TCI Automatic Transmission Dipstick with Tube, Locking, Steel/Plastic, Black, For Chevrolet, 700R4, 4L60E

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