JB4 MAP Sensor Bypass Extensions
Make your JB4 install painless. These plug-and-play extension harnesses relocate the difficult upper rear MAP sensor connection to an easy-to-reach spot — for the Toyota Tundra, Sequoia, Lexus LX 600 & GX 550 3.5L twin turbo.
Simplify Install & Removal
The factory upper rear MAP sensor is buried and awkward to reach every time you install or remove a JB4 or other piggyback system. These extensions let you bypass it — attach the connectors to each other and mount them high in an easy-to-reach location.
The result: quick, clean disconnection whenever you're re-installing or pulling your tuner. Sold in pairs (two harnesses included).
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📦 What's Included
(2) Tundra / Sequoia / Lexus LX 600 & GX 550 JB4 MAP Sensor Bypass Extension Harnesses.
FAQ
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What do these do? They bypass the hard-to-reach upper rear MAP sensor so you can install or remove a JB4 (or other piggyback) far more easily.
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How many come in the set? Sold as a pair — two extension harnesses.
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Which vehicles fit? Toyota Tundra, Sequoia, and Lexus LX 600 & GX 550 with the 3.5L twin-turbo engine.
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Are they plug and play? Yes — direct factory connectors, no cutting or splicing.
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