4JJ1 – Willys Workshop
Built tough, built right.

4JJ1

Ships Australia-wide
12 month warranty
30 day change-of-mind returns

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Isuzu MU-X – 4JJ1 engine parts.

Pay in 4 interest-free instalments on eligible purchases. No fees, no interest.Learn more →

Parts & fitment for your 4JJ1

Quality-aftermarket parts for the 4JJ1. In stock at Willys Workshop: intercoolers. Fast Australian shipping with fitment support from our Brisbane (Oxley) and Sunshine Coast (Warana) workshops.

Shop by part type: Intercoolers
Not sure what fits your 4JJ1? Send us your rego or build and we'll confirm fitment before you buy.
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