Collection: 4J Bits

Everything you need for Isuzu's 4J-family diesel engines — whether you're running a 4JJ1-TC or the newer 4JJ3-TCX. Common Rail Cowboys stocks a comprehensive range of 4J engine parts covering turbos, intake manifolds, intercooler kits, catch cans, EGR delete plates, exhaust manifolds, dump pipes and injector components.

The 4J engine family powers the Isuzu D-MAX, MU-X, Holden Colorado and Rodeo, plus Mazda BT-50 (2020-on) — and we're one of the most stocked online retailers in Australia for these platforms. Free express shipping, Afterpay available.